Merge branch 'akpm' (patches from Andrew)
Merge third patchbomb from Andrew Morton:
- various misc things
- a couple of lib/ optimisations
- provide DIV_ROUND_CLOSEST_ULL()
- checkpatch updates
- rtc tree
- befs, nilfs2, hfs, hfsplus, fatfs, adfs, affs, bfs
- ptrace fixes
- fork() fixes
- seccomp cleanups
- more mmap_sem hold time reductions from Davidlohr
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (138 commits)
proc: show locks in /proc/pid/fdinfo/X
docs: add missing and new /proc/PID/status file entries, fix typos
drivers/rtc/rtc-at91rm9200.c: make IO endian agnostic
Documentation/spi/spidev_test.c: fix warning
drivers/rtc/rtc-s5m.c: allow usage on device type different than main MFD type
.gitignore: ignore *.tar
MAINTAINERS: add Mediatek SoC mailing list
tomoyo: reduce mmap_sem hold for mm->exe_file
powerpc/oprofile: reduce mmap_sem hold for exe_file
oprofile: reduce mmap_sem hold for mm->exe_file
mips: ip32: add platform data hooks to use DS1685 driver
lib/Kconfig: fix up HAVE_ARCH_BITREVERSE help text
x86: switch to using asm-generic for seccomp.h
sparc: switch to using asm-generic for seccomp.h
powerpc: switch to using asm-generic for seccomp.h
parisc: switch to using asm-generic for seccomp.h
mips: switch to using asm-generic for seccomp.h
microblaze: use asm-generic for seccomp.h
arm: use asm-generic for seccomp.h
seccomp: allow COMPAT sigreturn overrides
...
diff --git a/.gitignore b/.gitignore
index acb6afe..4ad4a98 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,6 +24,7 @@
*.order
*.elf
*.bin
+*.tar
*.gz
*.bz2
*.lzma
diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle
index 449a8a1..4d4f06d 100644
--- a/Documentation/CodingStyle
+++ b/Documentation/CodingStyle
@@ -659,6 +659,19 @@
#define CONSTANT 0x4000
#define CONSTEXP (CONSTANT | 3)
+5) namespace collisions when defining local variables in macros resembling
+functions:
+
+#define FOO(x) \
+({ \
+ typeof(x) ret; \
+ ret = calc_ret(x); \
+ (ret); \
+)}
+
+ret is a common name for a local variable - __foo_ret is less likely
+to collide with an existing variable.
+
The cpp manual deals with macros exhaustively. The gcc internals manual also
covers RTL which is used frequently with assembly language in the kernel.
diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches
index 447671b..b03a832 100644
--- a/Documentation/SubmittingPatches
+++ b/Documentation/SubmittingPatches
@@ -614,8 +614,8 @@
- An empty line.
- - The body of the explanation, which will be copied to the
- permanent changelog to describe this patch.
+ - The body of the explanation, line wrapped at 75 columns, which will
+ be copied to the permanent changelog to describe this patch.
- The "Signed-off-by:" lines, described above, which will
also go in the changelog.
diff --git a/Documentation/devicetree/bindings/rtc/digicolor-rtc.txt b/Documentation/devicetree/bindings/rtc/digicolor-rtc.txt
new file mode 100644
index 0000000..d4649860
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/digicolor-rtc.txt
@@ -0,0 +1,17 @@
+Conexant Digicolor Real Time Clock controller
+
+This binding currently supports the CX92755 SoC.
+
+Required properties:
+- compatible: should be "cnxt,cx92755-rtc"
+- reg: physical base address of the controller and length of memory mapped
+ region.
+- interrupts: rtc alarm interrupt
+
+Example:
+
+ rtc@f0000c30 {
+ compatible = "cnxt,cx92755-rtc";
+ reg = <0xf0000c30 0x18>;
+ interrupts = <25>;
+ };
diff --git a/Documentation/devicetree/bindings/rtc/stmp3xxx-rtc.txt b/Documentation/devicetree/bindings/rtc/stmp3xxx-rtc.txt
index b800070..fa6a942 100644
--- a/Documentation/devicetree/bindings/rtc/stmp3xxx-rtc.txt
+++ b/Documentation/devicetree/bindings/rtc/stmp3xxx-rtc.txt
@@ -7,6 +7,11 @@
region.
- interrupts: rtc alarm interrupt
+Optional properties:
+- stmp,crystal-freq: override crystal frequency as determined from fuse bits.
+ Only <32000> and <32768> are possible for the hardware. Use <0> for
+ "no crystal".
+
Example:
rtc@80056000 {
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index a07ba61..8e36c7e 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -200,12 +200,12 @@
explained in Table 1-4.
(for SMP CONFIG users)
-For making accounting scalable, RSS related information are handled in
-asynchronous manner and the vaule may not be very precise. To see a precise
+For making accounting scalable, RSS related information are handled in an
+asynchronous manner and the value may not be very precise. To see a precise
snapshot of a moment, you can see /proc/<pid>/smaps file and scan page table.
It's slow but very precise.
-Table 1-2: Contents of the status files (as of 2.6.30-rc7)
+Table 1-2: Contents of the status files (as of 3.20.0)
..............................................................................
Field Content
Name filename of the executable
@@ -213,6 +213,7 @@
in an uninterruptible wait, Z is zombie,
T is traced or stopped)
Tgid thread group ID
+ Ngid NUMA group ID (0 if none)
Pid process id
PPid process id of the parent process
TracerPid PID of process tracing this process (0 if not)
@@ -220,6 +221,10 @@
Gid Real, effective, saved set, and file system GIDs
FDSize number of file descriptor slots currently allocated
Groups supplementary group list
+ NStgid descendant namespace thread group ID hierarchy
+ NSpid descendant namespace process ID hierarchy
+ NSpgid descendant namespace process group ID hierarchy
+ NSsid descendant namespace session ID hierarchy
VmPeak peak virtual memory size
VmSize total program size
VmLck locked memory size
@@ -1704,6 +1709,10 @@
flags: 0100002
mnt_id: 19
+All locks associated with a file descriptor are shown in its fdinfo too.
+
+lock: 1: FLOCK ADVISORY WRITE 359 00:13:11691 0 EOF
+
The files such as eventfd, fsnotify, signalfd, epoll among the regular pos/flags
pair provide additional information particular to the objects they represent.
diff --git a/Documentation/spi/spidev_test.c b/Documentation/spi/spidev_test.c
index 94f574b..135b3f5 100644
--- a/Documentation/spi/spidev_test.c
+++ b/Documentation/spi/spidev_test.c
@@ -80,7 +80,7 @@
* Unescape - process hexadecimal escape character
* converts shell input "\x23" -> 0x23
*/
-int unespcape(char *_dst, char *_src, size_t len)
+static int unescape(char *_dst, char *_src, size_t len)
{
int ret = 0;
char *src = _src;
@@ -304,7 +304,7 @@
size = strlen(input_tx+1);
tx = malloc(size);
rx = malloc(size);
- size = unespcape((char *)tx, input_tx, size);
+ size = unescape((char *)tx, input_tx, size);
transfer(fd, tx, rx, size);
free(rx);
free(tx);
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 99d7eb3..c831001 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -872,6 +872,27 @@
==============================================================
+threads-max
+
+This value controls the maximum number of threads that can be created
+using fork().
+
+During initialization the kernel sets this value such that even if the
+maximum number of threads is created, the thread structures occupy only
+a part (1/8th) of the available RAM pages.
+
+The minimum value that can be written to threads-max is 20.
+The maximum value that can be written to threads-max is given by the
+constant FUTEX_TID_MASK (0x3fffffff).
+If a value outside of this range is written to threads-max an error
+EINVAL occurs.
+
+The value written is checked against the available RAM pages. If the
+thread structures would occupy too much (more than 1/8th) of the
+available RAM pages threads-max is reduced accordingly.
+
+==============================================================
+
unknown_nmi_panic:
The value in this file affects behavior of handling NMI. When the
diff --git a/MAINTAINERS b/MAINTAINERS
index bf990f5..f7bbaec 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1215,6 +1215,7 @@
ARM/Mediatek SoC support
M: Matthias Brugger <matthias.bgg@gmail.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/boot/dts/mt6*
F: arch/arm/boot/dts/mt8*
@@ -8183,6 +8184,7 @@
REAL TIME CLOCK (RTC) SUBSYSTEM
M: Alessandro Zummo <a.zummo@towertech.it>
+M: Alexandre Belloni <alexandre.belloni@free-electrons.com>
L: rtc-linux@googlegroups.com
Q: http://patchwork.ozlabs.org/project/rtc-linux/list/
S: Maintained
diff --git a/arch/alpha/include/asm/processor.h b/arch/alpha/include/asm/processor.h
index b4cf036..43a7559 100644
--- a/arch/alpha/include/asm/processor.h
+++ b/arch/alpha/include/asm/processor.h
@@ -44,6 +44,7 @@
extern unsigned long thread_saved_pc(struct task_struct *);
/* Do necessary setup to start up a newly executed thread. */
+struct pt_regs;
extern void start_thread(struct pt_regs *, unsigned long, unsigned long);
/* Free all resources held by a thread. */
diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c
index 1badf9b..e00a018 100644
--- a/arch/arc/kernel/troubleshoot.c
+++ b/arch/arc/kernel/troubleshoot.c
@@ -52,7 +52,7 @@
print_reg_file(&(cregs->r13), 13);
}
-void print_task_path_n_nm(struct task_struct *tsk, char *buf)
+static void print_task_path_n_nm(struct task_struct *tsk, char *buf)
{
struct path path;
char *path_nm = NULL;
@@ -77,7 +77,6 @@
done:
pr_info("Path: %s\n", path_nm);
}
-EXPORT_SYMBOL(print_task_path_n_nm);
static void show_faulting_vma(unsigned long address, char *buf)
{
diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index eb0f43f..3c4596d 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -21,6 +21,7 @@
generic-y += resource.h
generic-y += rwsem.h
generic-y += scatterlist.h
+generic-y += seccomp.h
generic-y += sections.h
generic-y += segment.h
generic-y += sembuf.h
diff --git a/arch/arm/include/asm/seccomp.h b/arch/arm/include/asm/seccomp.h
deleted file mode 100644
index 52b156b..0000000
--- a/arch/arm/include/asm/seccomp.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef _ASM_ARM_SECCOMP_H
-#define _ASM_ARM_SECCOMP_H
-
-#include <linux/unistd.h>
-
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_rt_sigreturn
-
-#endif /* _ASM_ARM_SECCOMP_H */
diff --git a/arch/microblaze/include/asm/seccomp.h b/arch/microblaze/include/asm/seccomp.h
index 0d91275..204618a 100644
--- a/arch/microblaze/include/asm/seccomp.h
+++ b/arch/microblaze/include/asm/seccomp.h
@@ -3,14 +3,8 @@
#include <linux/unistd.h>
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
#define __NR_seccomp_sigreturn __NR_sigreturn
-#define __NR_seccomp_read_32 __NR_read
-#define __NR_seccomp_write_32 __NR_write
-#define __NR_seccomp_exit_32 __NR_exit
-#define __NR_seccomp_sigreturn_32 __NR_sigreturn
+#include <asm-generic/seccomp.h>
#endif /* _ASM_MICROBLAZE_SECCOMP_H */
diff --git a/arch/mips/configs/ip32_defconfig b/arch/mips/configs/ip32_defconfig
index 70ffe9b..fe48220 100644
--- a/arch/mips/configs/ip32_defconfig
+++ b/arch/mips/configs/ip32_defconfig
@@ -105,7 +105,8 @@
# CONFIG_RTC_HCTOSYS is not set
# CONFIG_RTC_INTF_SYSFS is not set
# CONFIG_RTC_INTF_PROC is not set
-CONFIG_RTC_DRV_CMOS=y
+CONFIG_RTC_DRV_DS1685_FAMILY=y
+CONFIG_RTC_DRV_DS1685=y
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
diff --git a/arch/mips/include/asm/mach-ip32/mc146818rtc.h b/arch/mips/include/asm/mach-ip32/mc146818rtc.h
deleted file mode 100644
index 6b6bab4..0000000
--- a/arch/mips/include/asm/mach-ip32/mc146818rtc.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998, 2001, 03 by Ralf Baechle
- * Copyright (C) 2000 Harald Koerfgen
- *
- * RTC routines for IP32 style attached Dallas chip.
- */
-#ifndef __ASM_MACH_IP32_MC146818RTC_H
-#define __ASM_MACH_IP32_MC146818RTC_H
-
-#include <asm/ip32/mace.h>
-
-#define RTC_PORT(x) (0x70 + (x))
-
-static unsigned char CMOS_READ(unsigned long addr)
-{
- return mace->isa.rtc[addr << 8];
-}
-
-static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
-{
- mace->isa.rtc[addr << 8] = data;
-}
-
-/*
- * FIXME: Do it right. For now just assume that no one lives in 20th century
- * and no O2 user in 22th century ;-)
- */
-#define mc146818_decode_year(year) ((year) + 2000)
-
-#define RTC_ALWAYS_BCD 0
-
-#endif /* __ASM_MACH_IP32_MC146818RTC_H */
diff --git a/arch/mips/include/asm/seccomp.h b/arch/mips/include/asm/seccomp.h
index f29c75c..1d8a2e2 100644
--- a/arch/mips/include/asm/seccomp.h
+++ b/arch/mips/include/asm/seccomp.h
@@ -2,11 +2,6 @@
#include <linux/unistd.h>
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_rt_sigreturn
-
/*
* Kludge alert:
*
@@ -29,4 +24,6 @@
#endif /* CONFIG_MIPS32_O32 */
+#include <asm-generic/seccomp.h>
+
#endif /* __ASM_SECCOMP_H */
diff --git a/arch/mips/sgi-ip32/ip32-platform.c b/arch/mips/sgi-ip32/ip32-platform.c
index 511e9ff..b522477 100644
--- a/arch/mips/sgi-ip32/ip32-platform.c
+++ b/arch/mips/sgi-ip32/ip32-platform.c
@@ -9,10 +9,13 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
+#include <linux/rtc/ds1685.h>
#include <asm/ip32/mace.h>
#include <asm/ip32/ip32_ints.h>
+extern void ip32_prepare_poweroff(void);
+
#define MACEISA_SERIAL1_OFFS offsetof(struct sgi_mace, isa.serial1)
#define MACEISA_SERIAL2_OFFS offsetof(struct sgi_mace, isa.serial2)
@@ -90,18 +93,47 @@
device_initcall(sgio2btns_devinit);
-static struct resource sgio2_cmos_rsrc[] = {
+#define MACE_RTC_RES_START (MACE_BASE + offsetof(struct sgi_mace, isa.rtc))
+#define MACE_RTC_RES_END (MACE_RTC_RES_START + 32767)
+
+static struct resource ip32_rtc_resources[] = {
{
- .start = 0x70,
- .end = 0x71,
- .flags = IORESOURCE_IO
+ .start = MACEISA_RTC_IRQ,
+ .end = MACEISA_RTC_IRQ,
+ .flags = IORESOURCE_IRQ
+ }, {
+ .start = MACE_RTC_RES_START,
+ .end = MACE_RTC_RES_END,
+ .flags = IORESOURCE_MEM,
}
};
-static __init int sgio2_cmos_devinit(void)
+/* RTC registers on IP32 are each padded by 256 bytes (0x100). */
+static struct ds1685_rtc_platform_data
+ip32_rtc_platform_data[] = {
+ {
+ .regstep = 0x100,
+ .bcd_mode = true,
+ .no_irq = false,
+ .uie_unsupported = false,
+ .alloc_io_resources = true,
+ .plat_prepare_poweroff = ip32_prepare_poweroff,
+ },
+};
+
+struct platform_device ip32_rtc_device = {
+ .name = "rtc-ds1685",
+ .id = -1,
+ .dev = {
+ .platform_data = ip32_rtc_platform_data,
+ },
+ .num_resources = ARRAY_SIZE(ip32_rtc_resources),
+ .resource = ip32_rtc_resources,
+};
+
++static int __init sgio2_rtc_devinit(void)
{
- return IS_ERR(platform_device_register_simple("rtc_cmos", -1,
- sgio2_cmos_rsrc, 1));
+ return platform_device_register(&ip32_rtc_device);
}
device_initcall(sgio2_cmos_devinit);
diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c
index 44b3470..8bd415c 100644
--- a/arch/mips/sgi-ip32/ip32-reset.c
+++ b/arch/mips/sgi-ip32/ip32-reset.c
@@ -11,10 +11,11 @@
#include <linux/compiler.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/sched.h>
#include <linux/notifier.h>
#include <linux/delay.h>
-#include <linux/ds17287rtc.h>
+#include <linux/rtc/ds1685.h>
#include <linux/interrupt.h>
#include <linux/pm.h>
@@ -33,53 +34,40 @@
#define POWERDOWN_FREQ (HZ / 4)
#define PANIC_FREQ (HZ / 8)
-static struct timer_list power_timer, blink_timer, debounce_timer;
-static int has_panicked, shuting_down;
+extern struct platform_device ip32_rtc_device;
-static void ip32_machine_restart(char *command) __noreturn;
-static void ip32_machine_halt(void) __noreturn;
-static void ip32_machine_power_off(void) __noreturn;
+static struct timer_list power_timer, blink_timer;
+static int has_panicked, shutting_down;
+static __noreturn void ip32_poweroff(void *data)
+{
+ void (*poweroff_func)(struct platform_device *) =
+ symbol_get(ds1685_rtc_poweroff);
+
+#ifdef CONFIG_MODULES
+ /* If the first __symbol_get failed, our module wasn't loaded. */
+ if (!poweroff_func) {
+ request_module("rtc-ds1685");
+ poweroff_func = symbol_get(ds1685_rtc_poweroff);
+ }
+#endif
+
+ if (!poweroff_func)
+ pr_emerg("RTC not available for power-off. Spinning forever ...\n");
+ else {
+ (*poweroff_func)((struct platform_device *)data);
+ symbol_put(ds1685_rtc_poweroff);
+ }
+
+ unreachable();
+}
+
+static void ip32_machine_restart(char *cmd) __noreturn;
static void ip32_machine_restart(char *cmd)
{
+ msleep(20);
crime->control = CRIME_CONTROL_HARD_RESET;
- while (1);
-}
-
-static inline void ip32_machine_halt(void)
-{
- ip32_machine_power_off();
-}
-
-static void ip32_machine_power_off(void)
-{
- unsigned char reg_a, xctrl_a, xctrl_b;
-
- disable_irq(MACEISA_RTC_IRQ);
- reg_a = CMOS_READ(RTC_REG_A);
-
- /* setup for kickstart & wake-up (DS12287 Ref. Man. p. 19) */
- reg_a &= ~DS_REGA_DV2;
- reg_a |= DS_REGA_DV1;
-
- CMOS_WRITE(reg_a | DS_REGA_DV0, RTC_REG_A);
- wbflush();
- xctrl_b = CMOS_READ(DS_B1_XCTRL4B)
- | DS_XCTRL4B_ABE | DS_XCTRL4B_KFE;
- CMOS_WRITE(xctrl_b, DS_B1_XCTRL4B);
- xctrl_a = CMOS_READ(DS_B1_XCTRL4A) & ~DS_XCTRL4A_IFS;
- CMOS_WRITE(xctrl_a, DS_B1_XCTRL4A);
- wbflush();
- /* adios amigos... */
- CMOS_WRITE(xctrl_a | DS_XCTRL4A_PAB, DS_B1_XCTRL4A);
- CMOS_WRITE(reg_a, RTC_REG_A);
- wbflush();
- while (1);
-}
-
-static void power_timeout(unsigned long data)
-{
- ip32_machine_power_off();
+ unreachable();
}
static void blink_timeout(unsigned long data)
@@ -89,44 +77,27 @@
mod_timer(&blink_timer, jiffies + data);
}
-static void debounce(unsigned long data)
+static void ip32_machine_halt(void)
{
- unsigned char reg_a, reg_c, xctrl_a;
-
- reg_c = CMOS_READ(RTC_INTR_FLAGS);
- reg_a = CMOS_READ(RTC_REG_A);
- CMOS_WRITE(reg_a | DS_REGA_DV0, RTC_REG_A);
- wbflush();
- xctrl_a = CMOS_READ(DS_B1_XCTRL4A);
- if ((xctrl_a & DS_XCTRL4A_IFS) || (reg_c & RTC_IRQF )) {
- /* Interrupt still being sent. */
- debounce_timer.expires = jiffies + 50;
- add_timer(&debounce_timer);
-
- /* clear interrupt source */
- CMOS_WRITE(xctrl_a & ~DS_XCTRL4A_IFS, DS_B1_XCTRL4A);
- CMOS_WRITE(reg_a & ~DS_REGA_DV0, RTC_REG_A);
- return;
- }
- CMOS_WRITE(reg_a & ~DS_REGA_DV0, RTC_REG_A);
-
- if (has_panicked)
- ip32_machine_restart(NULL);
-
- enable_irq(MACEISA_RTC_IRQ);
+ ip32_poweroff(&ip32_rtc_device);
}
-static inline void ip32_power_button(void)
+static void power_timeout(unsigned long data)
+{
+ ip32_poweroff(&ip32_rtc_device);
+}
+
+void ip32_prepare_poweroff(void)
{
if (has_panicked)
return;
- if (shuting_down || kill_cad_pid(SIGINT, 1)) {
+ if (shutting_down || kill_cad_pid(SIGINT, 1)) {
/* No init process or button pressed twice. */
- ip32_machine_power_off();
+ ip32_poweroff(&ip32_rtc_device);
}
- shuting_down = 1;
+ shutting_down = 1;
blink_timer.data = POWERDOWN_FREQ;
blink_timeout(POWERDOWN_FREQ);
@@ -136,27 +107,6 @@
add_timer(&power_timer);
}
-static irqreturn_t ip32_rtc_int(int irq, void *dev_id)
-{
- unsigned char reg_c;
-
- reg_c = CMOS_READ(RTC_INTR_FLAGS);
- if (!(reg_c & RTC_IRQF)) {
- printk(KERN_WARNING
- "%s: RTC IRQ without RTC_IRQF\n", __func__);
- }
- /* Wait until interrupt goes away */
- disable_irq_nosync(MACEISA_RTC_IRQ);
- init_timer(&debounce_timer);
- debounce_timer.function = debounce;
- debounce_timer.expires = jiffies + 50;
- add_timer(&debounce_timer);
-
- printk(KERN_DEBUG "Power button pressed\n");
- ip32_power_button();
- return IRQ_HANDLED;
-}
-
static int panic_event(struct notifier_block *this, unsigned long event,
void *ptr)
{
@@ -190,15 +140,12 @@
_machine_restart = ip32_machine_restart;
_machine_halt = ip32_machine_halt;
- pm_power_off = ip32_machine_power_off;
+ pm_power_off = ip32_machine_halt;
init_timer(&blink_timer);
blink_timer.function = blink_timeout;
atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
- if (request_irq(MACEISA_RTC_IRQ, ip32_rtc_int, 0, "rtc", NULL))
- panic("Can't allocate MACEISA RTC IRQ");
-
return 0;
}
diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index 8686237..12b341d 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -20,6 +20,7 @@
generic-y += percpu.h
generic-y += poll.h
generic-y += preempt.h
+generic-y += seccomp.h
generic-y += segment.h
generic-y += topology.h
generic-y += trace_clock.h
diff --git a/arch/parisc/include/asm/seccomp.h b/arch/parisc/include/asm/seccomp.h
deleted file mode 100644
index 015f788..0000000
--- a/arch/parisc/include/asm/seccomp.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef _ASM_PARISC_SECCOMP_H
-#define _ASM_PARISC_SECCOMP_H
-
-#include <linux/unistd.h>
-
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_rt_sigreturn
-
-#define __NR_seccomp_read_32 __NR_read
-#define __NR_seccomp_write_32 __NR_write
-#define __NR_seccomp_exit_32 __NR_exit
-#define __NR_seccomp_sigreturn_32 __NR_rt_sigreturn
-
-#endif /* _ASM_PARISC_SECCOMP_H */
diff --git a/arch/powerpc/include/asm/seccomp.h b/arch/powerpc/include/asm/seccomp.h
new file mode 100644
index 0000000..c1818e3
--- /dev/null
+++ b/arch/powerpc/include/asm/seccomp.h
@@ -0,0 +1,10 @@
+#ifndef _ASM_POWERPC_SECCOMP_H
+#define _ASM_POWERPC_SECCOMP_H
+
+#include <linux/unistd.h>
+
+#define __NR_seccomp_sigreturn_32 __NR_sigreturn
+
+#include <asm-generic/seccomp.h>
+
+#endif /* _ASM_POWERPC_SECCOMP_H */
diff --git a/arch/powerpc/include/uapi/asm/Kbuild b/arch/powerpc/include/uapi/asm/Kbuild
index 7a3f795..79c4068 100644
--- a/arch/powerpc/include/uapi/asm/Kbuild
+++ b/arch/powerpc/include/uapi/asm/Kbuild
@@ -25,7 +25,6 @@
header-y += ps3fb.h
header-y += ptrace.h
header-y += resource.h
-header-y += seccomp.h
header-y += sembuf.h
header-y += setup.h
header-y += shmbuf.h
diff --git a/arch/powerpc/include/uapi/asm/seccomp.h b/arch/powerpc/include/uapi/asm/seccomp.h
deleted file mode 100644
index 00c1d91..0000000
--- a/arch/powerpc/include/uapi/asm/seccomp.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef _ASM_POWERPC_SECCOMP_H
-#define _ASM_POWERPC_SECCOMP_H
-
-#include <linux/unistd.h>
-
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_rt_sigreturn
-
-#define __NR_seccomp_read_32 __NR_read
-#define __NR_seccomp_write_32 __NR_write
-#define __NR_seccomp_exit_32 __NR_exit
-#define __NR_seccomp_sigreturn_32 __NR_sigreturn
-
-#endif /* _ASM_POWERPC_SECCOMP_H */
diff --git a/arch/powerpc/oprofile/cell/spu_task_sync.c b/arch/powerpc/oprofile/cell/spu_task_sync.c
index 1c27831..ed7b097 100644
--- a/arch/powerpc/oprofile/cell/spu_task_sync.c
+++ b/arch/powerpc/oprofile/cell/spu_task_sync.c
@@ -22,6 +22,7 @@
#include <linux/kref.h>
#include <linux/mm.h>
#include <linux/fs.h>
+#include <linux/file.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/numa.h>
@@ -322,18 +323,20 @@
unsigned long app_cookie = 0;
unsigned int my_offset = 0;
struct vm_area_struct *vma;
+ struct file *exe_file;
struct mm_struct *mm = spu->mm;
if (!mm)
goto out;
- down_read(&mm->mmap_sem);
-
- if (mm->exe_file) {
- app_cookie = fast_get_dcookie(&mm->exe_file->f_path);
- pr_debug("got dcookie for %pD\n", mm->exe_file);
+ exe_file = get_mm_exe_file(mm);
+ if (exe_file) {
+ app_cookie = fast_get_dcookie(&exe_file->f_path);
+ pr_debug("got dcookie for %pD\n", exe_file);
+ fput(exe_file);
}
+ down_read(&mm->mmap_sem);
for (vma = mm->mmap; vma; vma = vma->vm_next) {
if (vma->vm_start > spu_ref || vma->vm_end <= spu_ref)
continue;
diff --git a/arch/sparc/include/asm/seccomp.h b/arch/sparc/include/asm/seccomp.h
index adca1bc..5ef8826 100644
--- a/arch/sparc/include/asm/seccomp.h
+++ b/arch/sparc/include/asm/seccomp.h
@@ -1,15 +1,10 @@
#ifndef _ASM_SECCOMP_H
+#define _ASM_SECCOMP_H
#include <linux/unistd.h>
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_rt_sigreturn
-
-#define __NR_seccomp_read_32 __NR_read
-#define __NR_seccomp_write_32 __NR_write
-#define __NR_seccomp_exit_32 __NR_exit
#define __NR_seccomp_sigreturn_32 __NR_sigreturn
+#include <asm-generic/seccomp.h>
+
#endif /* _ASM_SECCOMP_H */
diff --git a/arch/x86/include/asm/seccomp.h b/arch/x86/include/asm/seccomp.h
index 0f3d7f0..0c8c7c8 100644
--- a/arch/x86/include/asm/seccomp.h
+++ b/arch/x86/include/asm/seccomp.h
@@ -1,5 +1,20 @@
+#ifndef _ASM_X86_SECCOMP_H
+#define _ASM_X86_SECCOMP_H
+
+#include <asm/unistd.h>
+
#ifdef CONFIG_X86_32
-# include <asm/seccomp_32.h>
-#else
-# include <asm/seccomp_64.h>
+#define __NR_seccomp_sigreturn __NR_sigreturn
#endif
+
+#ifdef CONFIG_COMPAT
+#include <asm/ia32_unistd.h>
+#define __NR_seccomp_read_32 __NR_ia32_read
+#define __NR_seccomp_write_32 __NR_ia32_write
+#define __NR_seccomp_exit_32 __NR_ia32_exit
+#define __NR_seccomp_sigreturn_32 __NR_ia32_sigreturn
+#endif
+
+#include <asm-generic/seccomp.h>
+
+#endif /* _ASM_X86_SECCOMP_H */
diff --git a/arch/x86/include/asm/seccomp_32.h b/arch/x86/include/asm/seccomp_32.h
deleted file mode 100644
index b811d6f..0000000
--- a/arch/x86/include/asm/seccomp_32.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef _ASM_X86_SECCOMP_32_H
-#define _ASM_X86_SECCOMP_32_H
-
-#include <linux/unistd.h>
-
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_sigreturn
-
-#endif /* _ASM_X86_SECCOMP_32_H */
diff --git a/arch/x86/include/asm/seccomp_64.h b/arch/x86/include/asm/seccomp_64.h
deleted file mode 100644
index 84ec1bd..0000000
--- a/arch/x86/include/asm/seccomp_64.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef _ASM_X86_SECCOMP_64_H
-#define _ASM_X86_SECCOMP_64_H
-
-#include <linux/unistd.h>
-#include <asm/ia32_unistd.h>
-
-#define __NR_seccomp_read __NR_read
-#define __NR_seccomp_write __NR_write
-#define __NR_seccomp_exit __NR_exit
-#define __NR_seccomp_sigreturn __NR_rt_sigreturn
-
-#define __NR_seccomp_read_32 __NR_ia32_read
-#define __NR_seccomp_write_32 __NR_ia32_write
-#define __NR_seccomp_exit_32 __NR_ia32_exit
-#define __NR_seccomp_sigreturn_32 __NR_ia32_sigreturn
-
-#endif /* _ASM_X86_SECCOMP_64_H */
diff --git a/drivers/clk/bcm/clk-kona.c b/drivers/clk/bcm/clk-kona.c
index 05abae8..a0ef4f7 100644
--- a/drivers/clk/bcm/clk-kona.c
+++ b/drivers/clk/bcm/clk-kona.c
@@ -15,6 +15,7 @@
#include "clk-kona.h"
#include <linux/delay.h>
+#include <linux/kernel.h>
/*
* "Policies" affect the frequencies of bus clocks provided by a
@@ -51,21 +52,6 @@
/* Divider and scaling helpers */
-/*
- * Implement DIV_ROUND_CLOSEST() for 64-bit dividend and both values
- * unsigned. Note that unlike do_div(), the remainder is discarded
- * and the return value is the quotient (not the remainder).
- */
-u64 do_div_round_closest(u64 dividend, unsigned long divisor)
-{
- u64 result;
-
- result = dividend + ((u64)divisor >> 1);
- (void)do_div(result, divisor);
-
- return result;
-}
-
/* Convert a divider into the scaled divisor value it represents. */
static inline u64 scaled_div_value(struct bcm_clk_div *div, u32 reg_div)
{
@@ -87,7 +73,7 @@
combined = (u64)div_value * BILLION + billionths;
combined <<= div->u.s.frac_width;
- return do_div_round_closest(combined, BILLION);
+ return DIV_ROUND_CLOSEST_ULL(combined, BILLION);
}
/* The scaled minimum divisor representable by a divider */
@@ -731,7 +717,7 @@
scaled_rate = scale_rate(pre_div, parent_rate);
scaled_rate = scale_rate(div, scaled_rate);
scaled_div = divider_read_scaled(ccu, pre_div);
- scaled_parent_rate = do_div_round_closest(scaled_rate,
+ scaled_parent_rate = DIV_ROUND_CLOSEST_ULL(scaled_rate,
scaled_div);
} else {
scaled_parent_rate = scale_rate(div, parent_rate);
@@ -743,7 +729,7 @@
* rate.
*/
scaled_div = divider_read_scaled(ccu, div);
- result = do_div_round_closest(scaled_parent_rate, scaled_div);
+ result = DIV_ROUND_CLOSEST_ULL(scaled_parent_rate, scaled_div);
return (unsigned long)result;
}
@@ -790,7 +776,7 @@
scaled_rate = scale_rate(pre_div, parent_rate);
scaled_rate = scale_rate(div, scaled_rate);
scaled_pre_div = divider_read_scaled(ccu, pre_div);
- scaled_parent_rate = do_div_round_closest(scaled_rate,
+ scaled_parent_rate = DIV_ROUND_CLOSEST_ULL(scaled_rate,
scaled_pre_div);
} else {
scaled_parent_rate = scale_rate(div, parent_rate);
@@ -802,7 +788,7 @@
* the best we can do.
*/
if (!divider_is_fixed(div)) {
- best_scaled_div = do_div_round_closest(scaled_parent_rate,
+ best_scaled_div = DIV_ROUND_CLOSEST_ULL(scaled_parent_rate,
rate);
min_scaled_div = scaled_div_min(div);
max_scaled_div = scaled_div_max(div);
@@ -815,7 +801,7 @@
}
/* OK, figure out the resulting rate */
- result = do_div_round_closest(scaled_parent_rate, best_scaled_div);
+ result = DIV_ROUND_CLOSEST_ULL(scaled_parent_rate, best_scaled_div);
if (scaled_div)
*scaled_div = best_scaled_div;
diff --git a/drivers/clk/bcm/clk-kona.h b/drivers/clk/bcm/clk-kona.h
index 2537b30..6849a64 100644
--- a/drivers/clk/bcm/clk-kona.h
+++ b/drivers/clk/bcm/clk-kona.h
@@ -503,7 +503,6 @@
/* Externally visible functions */
-extern u64 do_div_round_closest(u64 dividend, unsigned long divisor);
extern u64 scaled_div_max(struct bcm_clk_div *div);
extern u64 scaled_div_build(struct bcm_clk_div *div, u32 div_value,
u32 billionths);
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 4058079..b8a5fa1 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -190,12 +190,6 @@
static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev);
-/* This implements DIV_ROUND_CLOSEST but avoids 64 bit division */
-static u64 div_round64(u64 dividend, u32 divisor)
-{
- return div_u64(dividend + (divisor / 2), divisor);
-}
-
/*
* Try detecting repeating patterns by keeping track of the last 8
* intervals, and checking if the standard deviation of that set
@@ -317,7 +311,7 @@
* operands are 32 bits.
* Make sure to round up for half microseconds.
*/
- data->predicted_us = div_round64((uint64_t)data->next_timer_us *
+ data->predicted_us = DIV_ROUND_CLOSEST_ULL((uint64_t)data->next_timer_us *
data->correction_factor[data->bucket],
RESOLUTION * DECAY);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index eef79cc..ba243db 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -36,9 +36,6 @@
#include <drm/drm_dp_mst_helper.h>
#include <drm/drm_rect.h>
-#define DIV_ROUND_CLOSEST_ULL(ll, d) \
-({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; })
-
/**
* _wait_for - magic (register) wait macro
*
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index d8686ce..08532d4 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -30,6 +30,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include "intel_drv.h"
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index d1542b7..4d28150 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -36,6 +36,7 @@
#include <linux/jiffies.h>
#include <linux/of.h>
#include <linux/delay.h>
+#include <linux/util_macros.h>
#include <linux/platform_data/ina2xx.h>
@@ -141,19 +142,6 @@
*/
static const int ina226_avg_tab[] = { 1, 4, 16, 64, 128, 256, 512, 1024 };
-static int ina226_avg_bits(int avg)
-{
- int i;
-
- /* Get the closest average from the tab. */
- for (i = 0; i < ARRAY_SIZE(ina226_avg_tab) - 1; i++) {
- if (avg <= (ina226_avg_tab[i] + ina226_avg_tab[i + 1]) / 2)
- break;
- }
-
- return i; /* Return 0b0111 for values greater than 1024. */
-}
-
static int ina226_reg_to_interval(u16 config)
{
int avg = ina226_avg_tab[INA226_READ_AVG(config)];
@@ -171,7 +159,8 @@
avg = DIV_ROUND_CLOSEST(interval * 1000,
INA226_TOTAL_CONV_TIME_DEFAULT);
- avg_bits = ina226_avg_bits(avg);
+ avg_bits = find_closest(avg, ina226_avg_tab,
+ ARRAY_SIZE(ina226_avg_tab));
return (config & ~INA226_AVG_RD_MASK) | INA226_SHIFT_AVG(avg_bits);
}
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 2b4b419..6ff773f 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -34,6 +34,7 @@
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/util_macros.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
@@ -190,15 +191,7 @@
static int RANGE_TO_REG(long range)
{
- int i;
-
- /* Find the closest match */
- for (i = 0; i < 15; ++i) {
- if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
- break;
- }
-
- return i;
+ return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
}
#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
@@ -209,16 +202,12 @@
static const int adm1027_freq_map[8] = { /* 1 Hz */
11, 15, 22, 29, 35, 44, 59, 88
};
+#define FREQ_MAP_LEN 8
-static int FREQ_TO_REG(const int *map, unsigned long freq)
+static int FREQ_TO_REG(const int *map,
+ unsigned int map_size, unsigned long freq)
{
- int i;
-
- /* Find the closest match */
- for (i = 0; i < 7; ++i)
- if (freq <= (map[i] + map[i + 1]) / 2)
- break;
- return i;
+ return find_closest(freq, map, map_size);
}
static int FREQ_FROM_REG(const int *map, u8 reg)
@@ -828,7 +817,8 @@
data->cfg5 &= ~ADT7468_HFPWM;
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
} else { /* Low freq. mode */
- data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
+ data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map,
+ FREQ_MAP_LEN, val);
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
(data->zone[nr].range << 4)
| data->pwm_freq[nr]);
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
index 2189413..49276bb 100644
--- a/drivers/hwmon/w83795.c
+++ b/drivers/hwmon/w83795.c
@@ -35,6 +35,7 @@
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/jiffies.h>
+#include <linux/util_macros.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = {
@@ -308,11 +309,8 @@
unsigned long best0, best1;
/* Best fit for cksel = 0 */
- for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
- if (val > (pwm_freq_cksel0[reg0] +
- pwm_freq_cksel0[reg0 + 1]) / 2)
- break;
- }
+ reg0 = find_closest_descending(val, pwm_freq_cksel0,
+ ARRAY_SIZE(pwm_freq_cksel0));
if (val < 375) /* cksel = 1 can't beat this */
return reg0;
best0 = pwm_freq_cksel0[reg0];
diff --git a/drivers/media/dvb-frontends/cxd2820r_c.c b/drivers/media/dvb-frontends/cxd2820r_c.c
index 149fdca..72b0e2db 100644
--- a/drivers/media/dvb-frontends/cxd2820r_c.c
+++ b/drivers/media/dvb-frontends/cxd2820r_c.c
@@ -79,7 +79,7 @@
num = if_freq / 1000; /* Hz => kHz */
num *= 0x4000;
- if_ctl = 0x4000 - cxd2820r_div_u64_round_closest(num, 41000);
+ if_ctl = 0x4000 - DIV_ROUND_CLOSEST_ULL(num, 41000);
buf[0] = (if_ctl >> 8) & 0x3f;
buf[1] = (if_ctl >> 0) & 0xff;
diff --git a/drivers/media/dvb-frontends/cxd2820r_core.c b/drivers/media/dvb-frontends/cxd2820r_core.c
index 422e84b..490e090 100644
--- a/drivers/media/dvb-frontends/cxd2820r_core.c
+++ b/drivers/media/dvb-frontends/cxd2820r_core.c
@@ -244,12 +244,6 @@
return ret;
}
-/* 64 bit div with round closest, like DIV_ROUND_CLOSEST but 64 bit */
-u32 cxd2820r_div_u64_round_closest(u64 dividend, u32 divisor)
-{
- return div_u64(dividend + (divisor / 2), divisor);
-}
-
static int cxd2820r_set_frontend(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
diff --git a/drivers/media/dvb-frontends/cxd2820r_priv.h b/drivers/media/dvb-frontends/cxd2820r_priv.h
index 7ff5f60..4b42895 100644
--- a/drivers/media/dvb-frontends/cxd2820r_priv.h
+++ b/drivers/media/dvb-frontends/cxd2820r_priv.h
@@ -64,8 +64,6 @@
int cxd2820r_wr_regs(struct cxd2820r_priv *priv, u32 reginfo, u8 *val,
int len);
-u32 cxd2820r_div_u64_round_closest(u64 dividend, u32 divisor);
-
int cxd2820r_wr_regs(struct cxd2820r_priv *priv, u32 reginfo, u8 *val,
int len);
diff --git a/drivers/media/dvb-frontends/cxd2820r_t.c b/drivers/media/dvb-frontends/cxd2820r_t.c
index 51401d0..008cb2a 100644
--- a/drivers/media/dvb-frontends/cxd2820r_t.c
+++ b/drivers/media/dvb-frontends/cxd2820r_t.c
@@ -103,7 +103,7 @@
num = if_freq / 1000; /* Hz => kHz */
num *= 0x1000000;
- if_ctl = cxd2820r_div_u64_round_closest(num, 41000);
+ if_ctl = DIV_ROUND_CLOSEST_ULL(num, 41000);
buf[0] = ((if_ctl >> 16) & 0xff);
buf[1] = ((if_ctl >> 8) & 0xff);
buf[2] = ((if_ctl >> 0) & 0xff);
diff --git a/drivers/media/dvb-frontends/cxd2820r_t2.c b/drivers/media/dvb-frontends/cxd2820r_t2.c
index 9c0c4f4..35fe364 100644
--- a/drivers/media/dvb-frontends/cxd2820r_t2.c
+++ b/drivers/media/dvb-frontends/cxd2820r_t2.c
@@ -120,7 +120,7 @@
num = if_freq / 1000; /* Hz => kHz */
num *= 0x1000000;
- if_ctl = cxd2820r_div_u64_round_closest(num, 41000);
+ if_ctl = DIV_ROUND_CLOSEST_ULL(num, 41000);
buf[0] = ((if_ctl >> 16) & 0xff);
buf[1] = ((if_ctl >> 8) & 0xff);
buf[2] = ((if_ctl >> 0) & 0xff);
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index fc145d2..922a750 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -758,7 +758,7 @@
if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
if (msb->data_dir == READ) {
- for (cnt = 0; cnt < msb->current_seg; cnt++)
+ for (cnt = 0; cnt < msb->current_seg; cnt++) {
t_len += msb->req_sg[cnt].length
/ msb->page_size;
@@ -766,6 +766,7 @@
t_len += msb->current_page - 1;
t_len *= msb->page_size;
+ }
}
} else
t_len = blk_rq_bytes(msb->block_req);
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index d93b2b6..82f7000 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -21,6 +21,7 @@
* objects.
*/
+#include <linux/file.h>
#include <linux/mm.h>
#include <linux/workqueue.h>
#include <linux/notifier.h>
@@ -224,10 +225,18 @@
static unsigned long get_exec_dcookie(struct mm_struct *mm)
{
unsigned long cookie = NO_COOKIE;
+ struct file *exe_file;
- if (mm && mm->exe_file)
- cookie = fast_get_dcookie(&mm->exe_file->f_path);
+ if (!mm)
+ goto done;
+ exe_file = get_mm_exe_file(mm);
+ if (!exe_file)
+ goto done;
+
+ cookie = fast_get_dcookie(&exe_file->f_path);
+ fput(exe_file);
+done:
return cookie;
}
@@ -236,6 +245,8 @@
* pair that can then be added to the global event buffer. We make
* sure to do this lookup before a mm->mmap modification happens so
* we don't lose track.
+ *
+ * The caller must ensure the mm is not nil (ie: not a kernel thread).
*/
static unsigned long
lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset)
@@ -243,6 +254,7 @@
unsigned long cookie = NO_COOKIE;
struct vm_area_struct *vma;
+ down_read(&mm->mmap_sem);
for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
if (addr < vma->vm_start || addr >= vma->vm_end)
@@ -262,6 +274,7 @@
if (!vma)
cookie = INVALID_COOKIE;
+ up_read(&mm->mmap_sem);
return cookie;
}
@@ -402,20 +415,9 @@
{
if (!mm)
return;
- up_read(&mm->mmap_sem);
mmput(mm);
}
-
-static struct mm_struct *take_tasks_mm(struct task_struct *task)
-{
- struct mm_struct *mm = get_task_mm(task);
- if (mm)
- down_read(&mm->mmap_sem);
- return mm;
-}
-
-
static inline int is_code(unsigned long val)
{
return val == ESCAPE_CODE;
@@ -532,7 +534,7 @@
new = (struct task_struct *)val;
oldmm = mm;
release_mm(oldmm);
- mm = take_tasks_mm(new);
+ mm = get_task_mm(new);
if (mm != oldmm)
cookie = get_exec_dcookie(mm);
add_user_ctx_switch(new, cookie);
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index b5b5c3d..6149ae0 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1111,6 +1111,16 @@
This driver can also be built as a module. If so, the module
will be called rtc-davinci.
+config RTC_DRV_DIGICOLOR
+ tristate "Conexant Digicolor RTC"
+ depends on ARCH_DIGICOLOR
+ help
+ If you say yes here you get support for the RTC on Conexant
+ Digicolor platforms. This currently includes the CX92755 SoC.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-digicolor.
+
config RTC_DRV_IMXDI
tristate "Freescale IMX DryIce Real Time Clock"
depends on ARCH_MXC
@@ -1121,11 +1131,11 @@
will be called "rtc-imxdi".
config RTC_DRV_OMAP
- tristate "TI OMAP1"
- depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
+ tristate "TI OMAP Real Time Clock"
+ depends on ARCH_OMAP || ARCH_DAVINCI
help
Say "yes" here to support the on chip real time clock
- present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
+ present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
This driver can also be built as a module, if so, module
will be called rtc-omap.
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 69c8706..c31731c 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -40,6 +40,7 @@
obj-$(CONFIG_RTC_DRV_DA9055) += rtc-da9055.o
obj-$(CONFIG_RTC_DRV_DA9063) += rtc-da9063.o
obj-$(CONFIG_RTC_DRV_DAVINCI) += rtc-davinci.o
+obj-$(CONFIG_RTC_DRV_DIGICOLOR) += rtc-digicolor.o
obj-$(CONFIG_RTC_DRV_DM355EVM) += rtc-dm355evm.o
obj-$(CONFIG_RTC_DRV_VRTC) += rtc-mrst.o
obj-$(CONFIG_RTC_DRV_DS1216) += rtc-ds1216.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index c29ba7e..ea2a315 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -221,15 +221,15 @@
rtc->pie_timer.function = rtc_pie_update_irq;
rtc->pie_enabled = 0;
+ strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
+ dev_set_name(&rtc->dev, "rtc%d", id);
+
/* Check to see if there is an ALARM already set in hw */
err = __rtc_read_alarm(rtc, &alrm);
if (!err && !rtc_valid_tm(&alrm.time))
rtc_initialize_alarm(rtc, &alrm);
- strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
- dev_set_name(&rtc->dev, "rtc%d", id);
-
rtc_dev_prepare(rtc);
err = device_register(&rtc->dev);
diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c
index 6c719f2..e1cfa06 100644
--- a/drivers/rtc/hctosys.c
+++ b/drivers/rtc/hctosys.c
@@ -9,6 +9,8 @@
* published by the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/rtc.h>
/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
@@ -32,8 +34,8 @@
struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
if (rtc == NULL) {
- pr_err("%s: unable to open rtc device (%s)\n",
- __FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
+ pr_info("unable to open rtc device (%s)\n",
+ CONFIG_RTC_HCTOSYS_DEVICE);
goto err_open;
}
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index d43ee40..166fc60 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -31,13 +31,14 @@
memset(tm, 0, sizeof(struct rtc_time));
err = rtc->ops->read_time(rtc->dev.parent, tm);
if (err < 0) {
- dev_err(&rtc->dev, "read_time: fail to read\n");
+ dev_dbg(&rtc->dev, "read_time: fail to read: %d\n",
+ err);
return err;
}
err = rtc_valid_tm(tm);
if (err < 0)
- dev_err(&rtc->dev, "read_time: rtc_time isn't valid\n");
+ dev_dbg(&rtc->dev, "read_time: rtc_time isn't valid\n");
}
return err;
}
diff --git a/drivers/rtc/rtc-ab-b5ze-s3.c b/drivers/rtc/rtc-ab-b5ze-s3.c
index cfc2ef9..b5cbc1b 100644
--- a/drivers/rtc/rtc-ab-b5ze-s3.c
+++ b/drivers/rtc/rtc-ab-b5ze-s3.c
@@ -881,7 +881,7 @@
.alarm_irq_enable = abb5zes3_rtc_alarm_irq_enable,
};
-static struct regmap_config abb5zes3_rtc_regmap_config = {
+static const struct regmap_config abb5zes3_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index b283a1a..35efd3f 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -37,9 +37,9 @@
#include "rtc-at91rm9200.h"
#define at91_rtc_read(field) \
- __raw_readl(at91_rtc_regs + field)
+ readl_relaxed(at91_rtc_regs + field)
#define at91_rtc_write(field, val) \
- __raw_writel((val), at91_rtc_regs + field)
+ writel_relaxed((val), at91_rtc_regs + field)
#define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 87647f4..a82556a 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -28,6 +28,9 @@
* interrupts disabled, holding the global rtc_lock, to exclude those
* other drivers and utilities on correctly configured systems.
*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
@@ -385,8 +388,7 @@
static int __init set_alarm_disable_quirk(const struct dmi_system_id *id)
{
alarm_disable_quirk = true;
- pr_info("rtc-cmos: BIOS has alarm-disable quirk. ");
- pr_info("RTC alarms disabled\n");
+ pr_info("BIOS has alarm-disable quirk - RTC alarms disabled\n");
return 0;
}
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index 613c43b..1ba4371 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -16,6 +16,7 @@
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/err.h>
+#include <linux/delay.h>
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>
@@ -23,6 +24,8 @@
#define rtc_err(rtc, fmt, ...) \
dev_err(rtc->da9052->dev, "%s: " fmt, __func__, ##__VA_ARGS__)
+#define DA9052_GET_TIME_RETRIES 5
+
struct da9052_rtc {
struct rtc_device *rtc;
struct da9052 *da9052;
@@ -58,22 +61,43 @@
static int da9052_read_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)
{
int ret;
- uint8_t v[5];
+ uint8_t v[2][5];
+ int idx = 1;
+ int timeout = DA9052_GET_TIME_RETRIES;
- ret = da9052_group_read(rtc->da9052, DA9052_ALARM_MI_REG, 5, v);
- if (ret != 0) {
+ ret = da9052_group_read(rtc->da9052, DA9052_ALARM_MI_REG, 5, &v[0][0]);
+ if (ret) {
rtc_err(rtc, "Failed to group read ALM: %d\n", ret);
return ret;
}
- rtc_tm->tm_year = (v[4] & DA9052_RTC_YEAR) + 100;
- rtc_tm->tm_mon = (v[3] & DA9052_RTC_MONTH) - 1;
- rtc_tm->tm_mday = v[2] & DA9052_RTC_DAY;
- rtc_tm->tm_hour = v[1] & DA9052_RTC_HOUR;
- rtc_tm->tm_min = v[0] & DA9052_RTC_MIN;
+ do {
+ ret = da9052_group_read(rtc->da9052,
+ DA9052_ALARM_MI_REG, 5, &v[idx][0]);
+ if (ret) {
+ rtc_err(rtc, "Failed to group read ALM: %d\n", ret);
+ return ret;
+ }
- ret = rtc_valid_tm(rtc_tm);
- return ret;
+ if (memcmp(&v[0][0], &v[1][0], 5) == 0) {
+ rtc_tm->tm_year = (v[0][4] & DA9052_RTC_YEAR) + 100;
+ rtc_tm->tm_mon = (v[0][3] & DA9052_RTC_MONTH) - 1;
+ rtc_tm->tm_mday = v[0][2] & DA9052_RTC_DAY;
+ rtc_tm->tm_hour = v[0][1] & DA9052_RTC_HOUR;
+ rtc_tm->tm_min = v[0][0] & DA9052_RTC_MIN;
+
+ ret = rtc_valid_tm(rtc_tm);
+ return ret;
+ }
+
+ idx = (1-idx);
+ msleep(20);
+
+ } while (timeout--);
+
+ rtc_err(rtc, "Timed out reading alarm time\n");
+
+ return -EIO;
}
static int da9052_set_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)
@@ -135,24 +159,45 @@
static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
{
struct da9052_rtc *rtc = dev_get_drvdata(dev);
- uint8_t v[6];
int ret;
+ uint8_t v[2][6];
+ int idx = 1;
+ int timeout = DA9052_GET_TIME_RETRIES;
- ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, v);
- if (ret < 0) {
+ ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, &v[0][0]);
+ if (ret) {
rtc_err(rtc, "Failed to read RTC time : %d\n", ret);
return ret;
}
- rtc_tm->tm_year = (v[5] & DA9052_RTC_YEAR) + 100;
- rtc_tm->tm_mon = (v[4] & DA9052_RTC_MONTH) - 1;
- rtc_tm->tm_mday = v[3] & DA9052_RTC_DAY;
- rtc_tm->tm_hour = v[2] & DA9052_RTC_HOUR;
- rtc_tm->tm_min = v[1] & DA9052_RTC_MIN;
- rtc_tm->tm_sec = v[0] & DA9052_RTC_SEC;
+ do {
+ ret = da9052_group_read(rtc->da9052,
+ DA9052_COUNT_S_REG, 6, &v[idx][0]);
+ if (ret) {
+ rtc_err(rtc, "Failed to read RTC time : %d\n", ret);
+ return ret;
+ }
- ret = rtc_valid_tm(rtc_tm);
- return ret;
+ if (memcmp(&v[0][0], &v[1][0], 6) == 0) {
+ rtc_tm->tm_year = (v[0][5] & DA9052_RTC_YEAR) + 100;
+ rtc_tm->tm_mon = (v[0][4] & DA9052_RTC_MONTH) - 1;
+ rtc_tm->tm_mday = v[0][3] & DA9052_RTC_DAY;
+ rtc_tm->tm_hour = v[0][2] & DA9052_RTC_HOUR;
+ rtc_tm->tm_min = v[0][1] & DA9052_RTC_MIN;
+ rtc_tm->tm_sec = v[0][0] & DA9052_RTC_SEC;
+
+ ret = rtc_valid_tm(rtc_tm);
+ return ret;
+ }
+
+ idx = (1-idx);
+ msleep(20);
+
+ } while (timeout--);
+
+ rtc_err(rtc, "Timed out reading time\n");
+
+ return -EIO;
}
static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm)
@@ -161,6 +206,10 @@
uint8_t v[6];
int ret;
+ /* DA9052 only has 6 bits for year - to represent 2000-2063 */
+ if ((tm->tm_year < 100) || (tm->tm_year > 163))
+ return -EINVAL;
+
rtc = dev_get_drvdata(dev);
v[0] = tm->tm_sec;
@@ -198,6 +247,10 @@
struct rtc_time *tm = &alrm->time;
struct da9052_rtc *rtc = dev_get_drvdata(dev);
+ /* DA9052 only has 6 bits for year - to represent 2000-2063 */
+ if ((tm->tm_year < 100) || (tm->tm_year > 163))
+ return -EINVAL;
+
ret = da9052_rtc_enable_alarm(rtc, 0);
if (ret < 0)
return ret;
@@ -256,6 +309,8 @@
return ret;
}
+ device_init_wakeup(&pdev->dev, true);
+
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&da9052_rtc_ops, THIS_MODULE);
return PTR_ERR_OR_ZERO(rtc->rtc);
diff --git a/drivers/rtc/rtc-digicolor.c b/drivers/rtc/rtc-digicolor.c
new file mode 100644
index 0000000..8d05596
--- /dev/null
+++ b/drivers/rtc/rtc-digicolor.c
@@ -0,0 +1,227 @@
+/*
+ * Real Time Clock driver for Conexant Digicolor
+ *
+ * Copyright (C) 2015 Paradox Innovation Ltd.
+ *
+ * Author: Baruch Siach <baruch@tkos.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/of.h>
+
+#define DC_RTC_CONTROL 0x0
+#define DC_RTC_TIME 0x8
+#define DC_RTC_REFERENCE 0xc
+#define DC_RTC_ALARM 0x10
+#define DC_RTC_INTFLAG_CLEAR 0x14
+#define DC_RTC_INTENABLE 0x16
+
+#define DC_RTC_CMD_MASK 0xf
+#define DC_RTC_GO_BUSY BIT(7)
+
+#define CMD_NOP 0
+#define CMD_RESET 1
+#define CMD_WRITE 3
+#define CMD_READ 4
+
+#define CMD_DELAY_US (10*1000)
+#define CMD_TIMEOUT_US (500*CMD_DELAY_US)
+
+struct dc_rtc {
+ struct rtc_device *rtc_dev;
+ void __iomem *regs;
+};
+
+static int dc_rtc_cmds(struct dc_rtc *rtc, const u8 *cmds, int len)
+{
+ u8 val;
+ int i, ret;
+
+ for (i = 0; i < len; i++) {
+ writeb_relaxed((cmds[i] & DC_RTC_CMD_MASK) | DC_RTC_GO_BUSY,
+ rtc->regs + DC_RTC_CONTROL);
+ ret = readb_relaxed_poll_timeout(
+ rtc->regs + DC_RTC_CONTROL, val,
+ !(val & DC_RTC_GO_BUSY), CMD_DELAY_US, CMD_TIMEOUT_US);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int dc_rtc_read(struct dc_rtc *rtc, unsigned long *val)
+{
+ static const u8 read_cmds[] = {CMD_READ, CMD_NOP};
+ u32 reference, time1, time2;
+ int ret;
+
+ ret = dc_rtc_cmds(rtc, read_cmds, ARRAY_SIZE(read_cmds));
+ if (ret < 0)
+ return ret;
+
+ reference = readl_relaxed(rtc->regs + DC_RTC_REFERENCE);
+ time1 = readl_relaxed(rtc->regs + DC_RTC_TIME);
+ /* Read twice to ensure consistency */
+ while (1) {
+ time2 = readl_relaxed(rtc->regs + DC_RTC_TIME);
+ if (time1 == time2)
+ break;
+ time1 = time2;
+ }
+
+ *val = reference + time1;
+ return 0;
+}
+
+static int dc_rtc_write(struct dc_rtc *rtc, u32 val)
+{
+ static const u8 write_cmds[] = {CMD_WRITE, CMD_NOP, CMD_RESET, CMD_NOP};
+
+ writel_relaxed(val, rtc->regs + DC_RTC_REFERENCE);
+ return dc_rtc_cmds(rtc, write_cmds, ARRAY_SIZE(write_cmds));
+}
+
+static int dc_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+ unsigned long now;
+ int ret;
+
+ ret = dc_rtc_read(rtc, &now);
+ if (ret < 0)
+ return ret;
+ rtc_time64_to_tm(now, tm);
+
+ return 0;
+}
+
+static int dc_rtc_set_mmss(struct device *dev, unsigned long secs)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+
+ return dc_rtc_write(rtc, secs);
+}
+
+static int dc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+ u32 alarm_reg, reference;
+ unsigned long now;
+ int ret;
+
+ alarm_reg = readl_relaxed(rtc->regs + DC_RTC_ALARM);
+ reference = readl_relaxed(rtc->regs + DC_RTC_REFERENCE);
+ rtc_time64_to_tm(reference + alarm_reg, &alarm->time);
+
+ ret = dc_rtc_read(rtc, &now);
+ if (ret < 0)
+ return ret;
+
+ alarm->pending = alarm_reg + reference > now;
+ alarm->enabled = readl_relaxed(rtc->regs + DC_RTC_INTENABLE);
+
+ return 0;
+}
+
+static int dc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+ time64_t alarm_time;
+ u32 reference;
+
+ alarm_time = rtc_tm_to_time64(&alarm->time);
+
+ reference = readl_relaxed(rtc->regs + DC_RTC_REFERENCE);
+ writel_relaxed(alarm_time - reference, rtc->regs + DC_RTC_ALARM);
+
+ writeb_relaxed(!!alarm->enabled, rtc->regs + DC_RTC_INTENABLE);
+
+ return 0;
+}
+
+static int dc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+
+ writeb_relaxed(!!enabled, rtc->regs + DC_RTC_INTENABLE);
+
+ return 0;
+}
+
+static struct rtc_class_ops dc_rtc_ops = {
+ .read_time = dc_rtc_read_time,
+ .set_mmss = dc_rtc_set_mmss,
+ .read_alarm = dc_rtc_read_alarm,
+ .set_alarm = dc_rtc_set_alarm,
+ .alarm_irq_enable = dc_rtc_alarm_irq_enable,
+};
+
+static irqreturn_t dc_rtc_irq(int irq, void *dev_id)
+{
+ struct dc_rtc *rtc = dev_id;
+
+ writeb_relaxed(1, rtc->regs + DC_RTC_INTFLAG_CLEAR);
+ rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
+
+ return IRQ_HANDLED;
+}
+
+static int __init dc_rtc_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct dc_rtc *rtc;
+ int irq, ret;
+
+ rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
+ if (!rtc)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rtc->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(rtc->regs))
+ return PTR_ERR(rtc->regs);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+ ret = devm_request_irq(&pdev->dev, irq, dc_rtc_irq, 0, pdev->name, rtc);
+ if (ret < 0)
+ return ret;
+
+ platform_set_drvdata(pdev, rtc);
+ rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, pdev->name,
+ &dc_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc->rtc_dev))
+ return PTR_ERR(rtc->rtc_dev);
+
+ return 0;
+}
+
+static const struct of_device_id dc_dt_ids[] = {
+ { .compatible = "cnxt,cx92755-rtc" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, dc_dt_ids);
+
+static struct platform_driver dc_rtc_driver = {
+ .driver = {
+ .name = "digicolor_rtc",
+ .of_match_table = of_match_ptr(dc_dt_ids),
+ },
+};
+module_platform_driver_probe(dc_rtc_driver, dc_rtc_probe);
+
+MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>");
+MODULE_DESCRIPTION("Conexant Digicolor Realtime Clock Driver (RTC)");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 8605fde..167783f 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -18,6 +18,8 @@
* "Sending and receiving", using SMBus level communication is preferred.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
@@ -406,7 +408,7 @@
/* Set new watchdog time */
ret = ds1374_write_rtc(save_client, timeout, DS1374_REG_WDALM0, 3);
if (ret) {
- pr_info("rtc-ds1374 - couldn't set new watchdog time\n");
+ pr_info("couldn't set new watchdog time\n");
goto out;
}
@@ -539,12 +541,12 @@
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
- pr_info("rtc-ds1374: disable watchdog\n");
+ pr_info("disable watchdog\n");
ds1374_wdt_disable();
}
if (options & WDIOS_ENABLECARD) {
- pr_info("rtc-ds1374: enable watchdog\n");
+ pr_info("enable watchdog\n");
ds1374_wdt_settimeout(wdt_margin);
ds1374_wdt_ping();
}
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index 803869c..818a363 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -16,6 +16,8 @@
* published by the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/io.h>
@@ -799,7 +801,7 @@
struct platform_device *pdev = to_platform_device(dev);
struct ds1685_priv *rtc = platform_get_drvdata(pdev);
u8 ctrla, ctrlb, ctrlc, ctrld, ctrl4a, ctrl4b, ssn[8];
- char *model = '\0';
+ char *model;
#ifdef CONFIG_RTC_DS1685_PROC_REGS
char bits[NUM_REGS][(NUM_BITS * NUM_SPACES) + NUM_BITS + 1];
#endif
@@ -2139,7 +2141,6 @@
static struct platform_driver ds1685_rtc_driver = {
.driver = {
.name = "rtc-ds1685",
- .owner = THIS_MODULE,
},
.probe = ds1685_rtc_probe,
.remove = ds1685_rtc_remove,
@@ -2175,7 +2176,7 @@
* ds1685_rtc_poweroff - uses the RTC chip to power the system off.
* @pdev: pointer to platform_device structure.
*/
-extern void __noreturn
+void __noreturn
ds1685_rtc_poweroff(struct platform_device *pdev)
{
u8 ctrla, ctrl4a, ctrl4b;
@@ -2183,7 +2184,7 @@
/* Check for valid RTC data, else, spin forever. */
if (unlikely(!pdev)) {
- pr_emerg("rtc-ds1685: platform device data not available, spinning forever ...\n");
+ pr_emerg("platform device data not available, spinning forever ...\n");
unreachable();
} else {
/* Get the rtc data. */
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c
index adaf06c..7e48e53 100644
--- a/drivers/rtc/rtc-ds3232.c
+++ b/drivers/rtc/rtc-ds3232.c
@@ -15,6 +15,8 @@
* "Sending and receiving", using SMBus level communication is preferred.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
@@ -373,8 +375,8 @@
if (stat & DS3232_REG_SR_A1F) {
control = i2c_smbus_read_byte_data(client, DS3232_REG_CR);
if (control < 0) {
- pr_warn("Read DS3232 Control Register error."
- "Disable IRQ%d.\n", client->irq);
+ pr_warn("Read Control Register error - Disable IRQ%d\n",
+ client->irq);
} else {
/* disable alarm1 interrupt */
control &= ~(DS3232_REG_CR_A1IE);
diff --git a/drivers/rtc/rtc-efi-platform.c b/drivers/rtc/rtc-efi-platform.c
index b40fbe3..1a7f1d1 100644
--- a/drivers/rtc/rtc-efi-platform.c
+++ b/drivers/rtc/rtc-efi-platform.c
@@ -8,6 +8,9 @@
* Copyright (C) 1999-2000 VA Linux Systems
* Copyright (C) 1999-2000 Walt Drummond <drummond@valinux.com>
*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c
index fccf366..4f4930a 100644
--- a/drivers/rtc/rtc-em3027.c
+++ b/drivers/rtc/rtc-em3027.c
@@ -15,6 +15,7 @@
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/module.h>
+#include <linux/of.h>
/* Registers */
#define EM3027_REG_ON_OFF_CTRL 0x00
@@ -135,10 +136,20 @@
{ "em3027", 0 },
{ }
};
+MODULE_DEVICE_TABLE(i2c, em3027_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id em3027_of_match[] = {
+ { .compatible = "emmicro,em3027", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, em3027_of_match);
+#endif
static struct i2c_driver em3027_driver = {
.driver = {
.name = "rtc-em3027",
+ .of_match_table = of_match_ptr(em3027_of_match),
},
.probe = &em3027_probe,
.id_table = em3027_id,
diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index b936bb4..0f710e9 100644
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -66,7 +66,7 @@
#define HYM8563_ALM_BIT_DISABLE BIT(7)
#define HYM8563_CLKOUT 0x0d
-#define HYM8563_CLKOUT_DISABLE BIT(7)
+#define HYM8563_CLKOUT_ENABLE BIT(7)
#define HYM8563_CLKOUT_32768 0
#define HYM8563_CLKOUT_1024 1
#define HYM8563_CLKOUT_32 2
@@ -309,7 +309,7 @@
struct i2c_client *client = hym8563->client;
int ret = i2c_smbus_read_byte_data(client, HYM8563_CLKOUT);
- if (ret < 0 || ret & HYM8563_CLKOUT_DISABLE)
+ if (ret < 0)
return 0;
ret &= HYM8563_CLKOUT_MASK;
@@ -360,9 +360,9 @@
return ret;
if (enable)
- ret &= ~HYM8563_CLKOUT_DISABLE;
+ ret |= HYM8563_CLKOUT_ENABLE;
else
- ret |= HYM8563_CLKOUT_DISABLE;
+ ret &= ~HYM8563_CLKOUT_ENABLE;
return i2c_smbus_write_byte_data(client, HYM8563_CLKOUT, ret);
}
@@ -386,7 +386,7 @@
if (ret < 0)
return ret;
- return !(ret & HYM8563_CLKOUT_DISABLE);
+ return !!(ret & HYM8563_CLKOUT_ENABLE);
}
static const struct clk_ops hym8563_clkout_ops = {
@@ -407,7 +407,7 @@
int ret;
ret = i2c_smbus_write_byte_data(client, HYM8563_CLKOUT,
- HYM8563_CLKOUT_DISABLE);
+ 0);
if (ret < 0)
return ERR_PTR(ret);
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 7ff7427..a82937e 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -13,6 +13,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/bcd.h>
#include <linux/i2c.h>
#include <linux/init.h>
@@ -513,12 +515,12 @@
return -EFAULT;
if (rv & WDIOS_DISABLECARD) {
- pr_info("rtc-m41t80: disable watchdog\n");
+ pr_info("disable watchdog\n");
wdt_disable();
}
if (rv & WDIOS_ENABLECARD) {
- pr_info("rtc-m41t80: enable watchdog\n");
+ pr_info("enable watchdog\n");
wdt_ping();
}
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index 9d71328..7632a87 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -12,6 +12,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/slab.h>
#include <linux/rtc.h>
#include <linux/delay.h>
@@ -103,8 +105,8 @@
data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
if (tm->tm_year < 100) {
- pr_warn("%s: MAX77686 RTC cannot handle the year %d."
- "Assume it's 2000.\n", __func__, 1900 + tm->tm_year);
+ pr_warn("RTC cannot handle the year %d. Assume it's 2000.\n",
+ 1900 + tm->tm_year);
return -EINVAL;
}
return 0;
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index 67fbe55..9e02bcd 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -12,6 +12,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/slab.h>
#include <linux/rtc.h>
#include <linux/delay.h>
@@ -107,8 +109,8 @@
data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
if (tm->tm_year < 100) {
- pr_warn("%s: MAX8997 RTC cannot handle the year %d."
- "Assume it's 2000.\n", __func__, 1900 + tm->tm_year);
+ pr_warn("RTC cannot handle the year %d. Assume it's 2000.\n",
+ 1900 + tm->tm_year);
return -EINVAL;
}
return 0;
@@ -424,7 +426,7 @@
val = 0;
max8997_read_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, &val);
- pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
+ pr_info("WTSR_SMPL(0x%02x)\n", val);
}
static int max8997_rtc_init_reg(struct max8997_rtc_info *info)
diff --git a/drivers/rtc/rtc-msm6242.c b/drivers/rtc/rtc-msm6242.c
index 9bf877b..c1c5c4e 100644
--- a/drivers/rtc/rtc-msm6242.c
+++ b/drivers/rtc/rtc-msm6242.c
@@ -7,6 +7,8 @@
* Copyright (C) 1993 Hamish Macdonald
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/kernel.h>
@@ -111,7 +113,7 @@
}
if (!cnt)
- pr_warn("msm6242: timed out waiting for RTC (0x%x)\n",
+ pr_warn("timed out waiting for RTC (0x%x)\n",
msm6242_read(priv, MSM6242_CD));
}
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 8e5851a..8b6355f 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -118,12 +118,15 @@
#define KICK0_VALUE 0x83e70b13
#define KICK1_VALUE 0x95a4f1e0
+struct omap_rtc;
+
struct omap_rtc_device_type {
bool has_32kclk_en;
- bool has_kicker;
bool has_irqwakeen;
bool has_pmic_mode;
bool has_power_up_reset;
+ void (*lock)(struct omap_rtc *rtc);
+ void (*unlock)(struct omap_rtc *rtc);
};
struct omap_rtc {
@@ -156,6 +159,26 @@
writel(val, rtc->base + reg);
}
+static void am3352_rtc_unlock(struct omap_rtc *rtc)
+{
+ rtc_writel(rtc, OMAP_RTC_KICK0_REG, KICK0_VALUE);
+ rtc_writel(rtc, OMAP_RTC_KICK1_REG, KICK1_VALUE);
+}
+
+static void am3352_rtc_lock(struct omap_rtc *rtc)
+{
+ rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+ rtc_writel(rtc, OMAP_RTC_KICK1_REG, 0);
+}
+
+static void default_rtc_unlock(struct omap_rtc *rtc)
+{
+}
+
+static void default_rtc_lock(struct omap_rtc *rtc)
+{
+}
+
/*
* We rely on the rtc framework to handle locking (rtc->ops_lock),
* so the only other requirement is that register accesses which
@@ -186,7 +209,9 @@
/* alarm irq? */
if (irq_data & OMAP_RTC_STATUS_ALARM) {
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM);
+ rtc->type->lock(rtc);
events |= RTC_IRQF | RTC_AF;
}
@@ -218,9 +243,11 @@
irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
}
rtc_wait_not_busy(rtc);
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
if (rtc->type->has_irqwakeen)
rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
+ rtc->type->lock(rtc);
local_irq_enable();
return 0;
@@ -293,12 +320,14 @@
local_irq_disable();
rtc_wait_not_busy(rtc);
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_YEARS_REG, tm->tm_year);
rtc_write(rtc, OMAP_RTC_MONTHS_REG, tm->tm_mon);
rtc_write(rtc, OMAP_RTC_DAYS_REG, tm->tm_mday);
rtc_write(rtc, OMAP_RTC_HOURS_REG, tm->tm_hour);
rtc_write(rtc, OMAP_RTC_MINUTES_REG, tm->tm_min);
rtc_write(rtc, OMAP_RTC_SECONDS_REG, tm->tm_sec);
+ rtc->type->lock(rtc);
local_irq_enable();
@@ -341,6 +370,7 @@
local_irq_disable();
rtc_wait_not_busy(rtc);
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_ALARM_YEARS_REG, alm->time.tm_year);
rtc_write(rtc, OMAP_RTC_ALARM_MONTHS_REG, alm->time.tm_mon);
rtc_write(rtc, OMAP_RTC_ALARM_DAYS_REG, alm->time.tm_mday);
@@ -362,6 +392,7 @@
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
if (rtc->type->has_irqwakeen)
rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
+ rtc->type->lock(rtc);
local_irq_enable();
@@ -391,6 +422,7 @@
unsigned long now;
u32 val;
+ rtc->type->unlock(rtc);
/* enable pmic_power_en control */
val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN);
@@ -423,6 +455,7 @@
val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG,
val | OMAP_RTC_INTERRUPTS_IT_ALARM2);
+ rtc->type->lock(rtc);
/*
* Wait for alarm to trigger (within two seconds) and external PMIC to
@@ -442,17 +475,21 @@
static const struct omap_rtc_device_type omap_rtc_default_type = {
.has_power_up_reset = true,
+ .lock = default_rtc_lock,
+ .unlock = default_rtc_unlock,
};
static const struct omap_rtc_device_type omap_rtc_am3352_type = {
.has_32kclk_en = true,
- .has_kicker = true,
.has_irqwakeen = true,
.has_pmic_mode = true,
+ .lock = am3352_rtc_lock,
+ .unlock = am3352_rtc_unlock,
};
static const struct omap_rtc_device_type omap_rtc_da830_type = {
- .has_kicker = true,
+ .lock = am3352_rtc_lock,
+ .unlock = am3352_rtc_unlock,
};
static const struct platform_device_id omap_rtc_id_table[] = {
@@ -484,7 +521,7 @@
};
MODULE_DEVICE_TABLE(of, omap_rtc_of_match);
-static int __init omap_rtc_probe(struct platform_device *pdev)
+static int omap_rtc_probe(struct platform_device *pdev)
{
struct omap_rtc *rtc;
struct resource *res;
@@ -527,10 +564,7 @@
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
- if (rtc->type->has_kicker) {
- rtc_writel(rtc, OMAP_RTC_KICK0_REG, KICK0_VALUE);
- rtc_writel(rtc, OMAP_RTC_KICK1_REG, KICK1_VALUE);
- }
+ rtc->type->unlock(rtc);
/*
* disable interrupts
@@ -593,6 +627,8 @@
if (reg != new_ctrl)
rtc_write(rtc, OMAP_RTC_CTRL_REG, new_ctrl);
+ rtc->type->lock(rtc);
+
device_init_wakeup(&pdev->dev, true);
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
@@ -626,8 +662,7 @@
err:
device_init_wakeup(&pdev->dev, false);
- if (rtc->type->has_kicker)
- rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+ rtc->type->lock(rtc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -646,11 +681,11 @@
device_init_wakeup(&pdev->dev, 0);
+ rtc->type->unlock(rtc);
/* leave rtc running, but disable irqs */
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
- if (rtc->type->has_kicker)
- rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+ rtc->type->lock(rtc);
/* Disable the clock/module */
pm_runtime_put_sync(&pdev->dev);
@@ -666,6 +701,7 @@
rtc->interrupts_reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+ rtc->type->unlock(rtc);
/*
* FIXME: the RTC alarm is not currently acting as a wakeup event
* source on some platforms, and in fact this enable() call is just
@@ -675,6 +711,7 @@
enable_irq_wake(rtc->irq_alarm);
else
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
+ rtc->type->lock(rtc);
/* Disable the clock/module */
pm_runtime_put_sync(dev);
@@ -689,10 +726,12 @@
/* Enable the clock/module so that we can access the registers */
pm_runtime_get_sync(dev);
+ rtc->type->unlock(rtc);
if (device_may_wakeup(dev))
disable_irq_wake(rtc->irq_alarm);
else
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, rtc->interrupts_reg);
+ rtc->type->lock(rtc);
return 0;
}
@@ -709,12 +748,15 @@
* Keep the ALARM interrupt enabled to allow the system to power up on
* alarm events.
*/
+ rtc->type->unlock(rtc);
mask = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
mask &= OMAP_RTC_INTERRUPTS_IT_ALARM;
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, mask);
+ rtc->type->lock(rtc);
}
static struct platform_driver omap_rtc_driver = {
+ .probe = omap_rtc_probe,
.remove = __exit_p(omap_rtc_remove),
.shutdown = omap_rtc_shutdown,
.driver = {
@@ -725,7 +767,7 @@
.id_table = omap_rtc_id_table,
};
-module_platform_driver_probe(omap_rtc_driver, omap_rtc_probe);
+module_platform_driver(omap_rtc_driver);
MODULE_ALIAS("platform:omap_rtc");
MODULE_AUTHOR("George G. Davis (and others)");
diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c
index 95f6521..7061dca 100644
--- a/drivers/rtc/rtc-opal.c
+++ b/drivers/rtc/rtc-opal.c
@@ -16,8 +16,9 @@
* along with this program.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#define DRVNAME "rtc-opal"
-#define pr_fmt(fmt) DRVNAME ": " fmt
#include <linux/module.h>
#include <linux/err.h>
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 96fb32e..0ba7e59 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -246,7 +246,6 @@
static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
{
struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
- int err;
unsigned char buf[9];
dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
@@ -272,12 +271,8 @@
buf[PCF8563_REG_DW] = tm->tm_wday & 0x07;
- err = pcf8563_write_block_data(client, PCF8563_REG_SC,
+ return pcf8563_write_block_data(client, PCF8563_REG_SC,
9 - PCF8563_REG_SC, buf + PCF8563_REG_SC);
- if (err)
- return err;
-
- return 0;
}
#ifdef CONFIG_RTC_INTF_DEV
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index f4cf685..76cbad7 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -39,7 +39,6 @@
void __iomem *base;
struct clk *rtc_clk;
struct clk *rtc_src_clk;
- bool enabled;
struct s3c_rtc_data *data;
@@ -67,26 +66,25 @@
void (*disable) (struct s3c_rtc *info);
};
-static void s3c_rtc_alarm_clk_enable(struct s3c_rtc *info, bool enable)
+static void s3c_rtc_enable_clk(struct s3c_rtc *info)
{
unsigned long irq_flags;
spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
- if (enable) {
- if (!info->enabled) {
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
- info->enabled = true;
- }
- } else {
- if (info->enabled) {
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
- info->enabled = false;
- }
- }
+ clk_enable(info->rtc_clk);
+ if (info->data->needs_src_clk)
+ clk_enable(info->rtc_src_clk);
+ spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
+}
+
+static void s3c_rtc_disable_clk(struct s3c_rtc *info)
+{
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
+ if (info->data->needs_src_clk)
+ clk_disable(info->rtc_src_clk);
+ clk_disable(info->rtc_clk);
spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
}
@@ -119,20 +117,16 @@
dev_dbg(info->dev, "%s: aie=%d\n", __func__, enabled);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
+
tmp = readb(info->base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
if (enabled)
tmp |= S3C2410_RTCALM_ALMEN;
writeb(tmp, info->base + S3C2410_RTCALM);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
- s3c_rtc_alarm_clk_enable(info, enabled);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -143,18 +137,12 @@
if (!is_power_of_2(freq))
return -EINVAL;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
spin_lock_irq(&info->pie_lock);
if (info->data->set_freq)
info->data->set_freq(info, freq);
spin_unlock_irq(&info->pie_lock);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
return 0;
}
@@ -165,9 +153,7 @@
struct s3c_rtc *info = dev_get_drvdata(dev);
unsigned int have_retried = 0;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
retry_get_time:
rtc_tm->tm_min = readb(info->base + S3C2410_RTCMIN);
@@ -194,6 +180,8 @@
rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
+ s3c_rtc_disable_clk(info);
+
rtc_tm->tm_year += 100;
dev_dbg(dev, "read time %04d.%02d.%02d %02d:%02d:%02d\n",
@@ -202,10 +190,6 @@
rtc_tm->tm_mon -= 1;
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return rtc_valid_tm(rtc_tm);
}
@@ -225,9 +209,7 @@
return -EINVAL;
}
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
writeb(bin2bcd(tm->tm_sec), info->base + S3C2410_RTCSEC);
writeb(bin2bcd(tm->tm_min), info->base + S3C2410_RTCMIN);
@@ -236,9 +218,7 @@
writeb(bin2bcd(tm->tm_mon + 1), info->base + S3C2410_RTCMON);
writeb(bin2bcd(year), info->base + S3C2410_RTCYEAR);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -249,9 +229,7 @@
struct rtc_time *alm_tm = &alrm->time;
unsigned int alm_en;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
alm_tm->tm_sec = readb(info->base + S3C2410_ALMSEC);
alm_tm->tm_min = readb(info->base + S3C2410_ALMMIN);
@@ -262,6 +240,8 @@
alm_en = readb(info->base + S3C2410_RTCALM);
+ s3c_rtc_disable_clk(info);
+
alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
dev_dbg(dev, "read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
@@ -269,9 +249,7 @@
1900 + alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
-
/* decode the alarm enable field */
-
if (alm_en & S3C2410_RTCALM_SECEN)
alm_tm->tm_sec = bcd2bin(alm_tm->tm_sec);
else
@@ -304,10 +282,6 @@
else
alm_tm->tm_year = -1;
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return 0;
}
@@ -317,15 +291,13 @@
struct rtc_time *tm = &alrm->time;
unsigned int alrm_en;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
alrm->enabled,
1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
+ s3c_rtc_enable_clk(info);
+
alrm_en = readb(info->base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
writeb(0x00, info->base + S3C2410_RTCALM);
@@ -348,11 +320,9 @@
writeb(alrm_en, info->base + S3C2410_RTCALM);
- s3c_rtc_setaie(dev, alrm->enabled);
+ s3c_rtc_disable_clk(info);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_setaie(dev, alrm->enabled);
return 0;
}
@@ -361,16 +331,12 @@
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
if (info->data->enable_tick)
info->data->enable_tick(info, seq);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -388,10 +354,6 @@
{
unsigned int con, tmp;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
con = readw(info->base + S3C2410_RTCCON);
/* re-enable the device, and check it is ok */
if ((con & S3C2410_RTCCON_RTCEN) == 0) {
@@ -417,20 +379,12 @@
writew(tmp & ~S3C2410_RTCCON_CLKRST,
info->base + S3C2410_RTCCON);
}
-
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
}
static void s3c24xx_rtc_disable(struct s3c_rtc *info)
{
unsigned int con;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
con = readw(info->base + S3C2410_RTCCON);
con &= ~S3C2410_RTCCON_RTCEN;
writew(con, info->base + S3C2410_RTCCON);
@@ -438,28 +392,16 @@
con = readb(info->base + S3C2410_TICNT);
con &= ~S3C2410_TICNT_ENABLE;
writeb(con, info->base + S3C2410_TICNT);
-
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
}
static void s3c6410_rtc_disable(struct s3c_rtc *info)
{
unsigned int con;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
con = readw(info->base + S3C2410_RTCCON);
con &= ~S3C64XX_RTCCON_TICEN;
con &= ~S3C2410_RTCCON_RTCEN;
writew(con, info->base + S3C2410_RTCCON);
-
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
}
static int s3c_rtc_remove(struct platform_device *pdev)
@@ -554,6 +496,20 @@
device_init_wakeup(&pdev->dev, 1);
+ /* Check RTC Time */
+ if (s3c_rtc_gettime(&pdev->dev, &rtc_tm)) {
+ rtc_tm.tm_year = 100;
+ rtc_tm.tm_mon = 0;
+ rtc_tm.tm_mday = 1;
+ rtc_tm.tm_hour = 0;
+ rtc_tm.tm_min = 0;
+ rtc_tm.tm_sec = 0;
+
+ s3c_rtc_settime(&pdev->dev, &rtc_tm);
+
+ dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
+ }
+
/* register RTC and exit */
info->rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,
THIS_MODULE);
@@ -577,36 +533,21 @@
goto err_nortc;
}
- /* Check RTC Time */
- s3c_rtc_gettime(&pdev->dev, &rtc_tm);
-
- if (rtc_valid_tm(&rtc_tm)) {
- rtc_tm.tm_year = 100;
- rtc_tm.tm_mon = 0;
- rtc_tm.tm_mday = 1;
- rtc_tm.tm_hour = 0;
- rtc_tm.tm_min = 0;
- rtc_tm.tm_sec = 0;
-
- s3c_rtc_settime(&pdev->dev, &rtc_tm);
-
- dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
- }
-
if (info->data->select_tick_clk)
info->data->select_tick_clk(info);
s3c_rtc_setfreq(info, 1);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_disable_clk(info);
return 0;
err_nortc:
if (info->data->disable)
info->data->disable(info);
+
+ if (info->data->needs_src_clk)
+ clk_disable_unprepare(info->rtc_src_clk);
clk_disable_unprepare(info->rtc_clk);
return ret;
@@ -618,9 +559,7 @@
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
/* save TICNT for anyone using periodic interrupts */
if (info->data->save_tick_cnt)
@@ -636,10 +575,6 @@
dev_err(dev, "enable_irq_wake failed\n");
}
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return 0;
}
@@ -647,25 +582,19 @@
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
if (info->data->enable)
info->data->enable(info);
if (info->data->restore_tick_cnt)
info->data->restore_tick_cnt(info);
+ s3c_rtc_disable_clk(info);
+
if (device_may_wakeup(dev) && info->wake_en) {
disable_irq_wake(info->irq_alarm);
info->wake_en = false;
}
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return 0;
}
#endif
@@ -673,29 +602,13 @@
static void s3c24xx_rtc_irq(struct s3c_rtc *info, int mask)
{
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
- s3c_rtc_alarm_clk_enable(info, false);
}
static void s3c6410_rtc_irq(struct s3c_rtc *info, int mask)
{
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
writeb(mask, info->base + S3C2410_INTP);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
- s3c_rtc_alarm_clk_enable(info, false);
}
static void s3c2410_rtc_setfreq(struct s3c_rtc *info, int freq)
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 4008b84..8c70d78 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -15,6 +15,8 @@
* GNU General Public License for more details.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/bcd.h>
@@ -90,7 +92,7 @@
struct regmap *regmap;
struct rtc_device *rtc_dev;
int irq;
- int device_type;
+ enum sec_device_type device_type;
int rtc_24hr_mode;
const struct s5m_rtc_reg_config *regs;
};
@@ -146,7 +148,7 @@
data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
if (tm->tm_year < 100) {
- pr_err("s5m8767 RTC cannot handle the year %d.\n",
+ pr_err("RTC cannot handle the year %d\n",
1900 + tm->tm_year);
return -EINVAL;
} else {
@@ -187,6 +189,7 @@
val &= S5M_ALARM0_STATUS;
break;
case S2MPS14X:
+ case S2MPS13X:
ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2,
&val);
val &= S2MPS_ALARM0_STATUS;
@@ -252,6 +255,9 @@
case S2MPS14X:
data |= S2MPS_RTC_RUDR_MASK;
break;
+ case S2MPS13X:
+ data |= S2MPS13_RTC_AUDR_MASK;
+ break;
default:
return -EINVAL;
}
@@ -265,6 +271,11 @@
ret = s5m8767_wait_for_udr_update(info);
+ /* On S2MPS13 the AUDR is not auto-cleared */
+ if (info->device_type == S2MPS13X)
+ regmap_update_bits(info->regmap, info->regs->rtc_udr_update,
+ S2MPS13_RTC_AUDR_MASK, 0);
+
return ret;
}
@@ -306,7 +317,7 @@
u8 data[info->regs->regs_count];
int ret;
- if (info->device_type == S2MPS14X) {
+ if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) {
ret = regmap_update_bits(info->regmap,
info->regs->rtc_udr_update,
S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK);
@@ -329,6 +340,7 @@
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode);
break;
@@ -355,6 +367,7 @@
break;
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
ret = s5m8767_tm_to_data(tm, data);
break;
default:
@@ -402,6 +415,7 @@
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
alrm->enabled = 0;
for (i = 0; i < info->regs->regs_count; i++) {
@@ -450,6 +464,7 @@
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
for (i = 0; i < info->regs->regs_count; i++)
data[i] &= ~ALARM_ENABLE_MASK;
@@ -494,6 +509,7 @@
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
data[RTC_SEC] |= ALARM_ENABLE_MASK;
data[RTC_MIN] |= ALARM_ENABLE_MASK;
data[RTC_HOUR] |= ALARM_ENABLE_MASK;
@@ -533,6 +549,7 @@
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
s5m8767_tm_to_data(&alrm->time, data);
break;
@@ -615,6 +632,7 @@
break;
case S2MPS14X:
+ case S2MPS13X:
data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
ret = regmap_write(info->regmap, info->regs->ctrl, data[0]);
break;
@@ -650,8 +668,9 @@
if (!info)
return -ENOMEM;
- switch (pdata->device_type) {
+ switch (platform_get_device_id(pdev)->driver_data) {
case S2MPS14X:
+ case S2MPS13X:
regmap_cfg = &s2mps14_rtc_regmap_config;
info->regs = &s2mps_rtc_regs;
alarm_irq = S2MPS14_IRQ_RTCA0;
@@ -667,7 +686,9 @@
alarm_irq = S5M8767_IRQ_RTCA1;
break;
default:
- dev_err(&pdev->dev, "Device type is not supported by RTC driver\n");
+ dev_err(&pdev->dev,
+ "Device type %lu is not supported by RTC driver\n",
+ platform_get_device_id(pdev)->driver_data);
return -ENODEV;
}
@@ -687,7 +708,7 @@
info->dev = &pdev->dev;
info->s5m87xx = s5m87xx;
- info->device_type = s5m87xx->device_type;
+ info->device_type = platform_get_device_id(pdev)->driver_data;
if (s5m87xx->irq_data) {
info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq);
@@ -772,6 +793,7 @@
static const struct platform_device_id s5m_rtc_id[] = {
{ "s5m-rtc", S5M8767X },
+ { "s2mps13-rtc", S2MPS13X },
{ "s2mps14-rtc", S2MPS14X },
{ },
};
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 2939cdc..eb09edd 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -42,6 +42,8 @@
#define STMP3XXX_RTC_STAT 0x10
#define STMP3XXX_RTC_STAT_STALE_SHIFT 16
#define STMP3XXX_RTC_STAT_RTC_PRESENT 0x80000000
+#define STMP3XXX_RTC_STAT_XTAL32000_PRESENT 0x10000000
+#define STMP3XXX_RTC_STAT_XTAL32768_PRESENT 0x08000000
#define STMP3XXX_RTC_SECONDS 0x30
@@ -52,9 +54,13 @@
#define STMP3XXX_RTC_PERSISTENT0 0x60
#define STMP3XXX_RTC_PERSISTENT0_SET 0x64
#define STMP3XXX_RTC_PERSISTENT0_CLR 0x68
-#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN 0x00000002
-#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN 0x00000004
-#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE 0x00000080
+#define STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE (1 << 0)
+#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN (1 << 1)
+#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN (1 << 2)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP (1 << 4)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP (1 << 5)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ (1 << 6)
+#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE (1 << 7)
#define STMP3XXX_RTC_PERSISTENT1 0x70
/* missing bitmask in headers */
@@ -248,6 +254,9 @@
{
struct stmp3xxx_rtc_data *rtc_data;
struct resource *r;
+ u32 rtc_stat;
+ u32 pers0_set, pers0_clr;
+ u32 crystalfreq = 0;
int err;
rtc_data = devm_kzalloc(&pdev->dev, sizeof(*rtc_data), GFP_KERNEL);
@@ -268,8 +277,8 @@
rtc_data->irq_alarm = platform_get_irq(pdev, 0);
- if (!(readl(STMP3XXX_RTC_STAT + rtc_data->io) &
- STMP3XXX_RTC_STAT_RTC_PRESENT)) {
+ rtc_stat = readl(rtc_data->io + STMP3XXX_RTC_STAT);
+ if (!(rtc_stat & STMP3XXX_RTC_STAT_RTC_PRESENT)) {
dev_err(&pdev->dev, "no device onboard\n");
return -ENODEV;
}
@@ -282,9 +291,54 @@
return err;
}
+ /*
+ * Obviously the rtc needs a clock input to be able to run.
+ * This clock can be provided by an external 32k crystal. If that one is
+ * missing XTAL must not be disabled in suspend which consumes a
+ * lot of power. Normally the presence and exact frequency (supported
+ * are 32000 Hz and 32768 Hz) is detectable from fuses, but as reality
+ * proves these fuses are not blown correctly on all machines, so the
+ * frequency can be overridden in the device tree.
+ */
+ if (rtc_stat & STMP3XXX_RTC_STAT_XTAL32000_PRESENT)
+ crystalfreq = 32000;
+ else if (rtc_stat & STMP3XXX_RTC_STAT_XTAL32768_PRESENT)
+ crystalfreq = 32768;
+
+ of_property_read_u32(pdev->dev.of_node, "stmp,crystal-freq",
+ &crystalfreq);
+
+ switch (crystalfreq) {
+ case 32000:
+ /* keep 32kHz crystal running in low-power mode */
+ pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ |
+ STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
+ pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP;
+ break;
+ case 32768:
+ /* keep 32.768kHz crystal running in low-power mode */
+ pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
+ pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ;
+ break;
+ default:
+ dev_warn(&pdev->dev,
+ "invalid crystal-freq specified in device-tree. Assuming no crystal\n");
+ /* fall-through */
+ case 0:
+ /* keep XTAL on in low-power mode */
+ pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP;
+ pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
+ }
+
+ writel(pers0_set, rtc_data->io + STMP3XXX_RTC_PERSISTENT0_SET);
+
writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
- STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,
+ STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE | pers0_clr,
rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR);
writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN |
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 5baea3f..2dc787d 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -18,6 +18,8 @@
* 2 of the License, or (at your option) any later version.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
@@ -145,8 +147,7 @@
ret = twl_i2c_read_u8(TWL_MODULE_RTC, data, (rtc_reg_map[reg]));
if (ret < 0)
- pr_err("twl_rtc: Could not read TWL"
- "register %X - error %d\n", reg, ret);
+ pr_err("Could not read TWL register %X - error %d\n", reg, ret);
return ret;
}
@@ -159,8 +160,8 @@
ret = twl_i2c_write_u8(TWL_MODULE_RTC, data, (rtc_reg_map[reg]));
if (ret < 0)
- pr_err("twl_rtc: Could not write TWL"
- "register %X - error %d\n", reg, ret);
+ pr_err("Could not write TWL register %X - error %d\n",
+ reg, ret);
return ret;
}
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index b1de58e..5638b7b 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -22,6 +22,7 @@
#include <linux/rtc.h>
#include <linux/delay.h>
#include <linux/module.h>
+#include <linux/bitops.h>
#define DRV_VERSION "1.0.8"
@@ -366,8 +367,7 @@
* perform sign extension. The formula is
* Catr = (atr * 0.25pF) + 11.00pF.
*/
- if (atr & 0x20)
- atr |= 0xC0;
+ atr = sign_extend32(atr, 5);
dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __func__, atr, atr);
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index e90a374..cc3b9d3 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -1079,22 +1079,18 @@
int
bfad_worker(void *ptr)
{
- struct bfad_s *bfad;
- unsigned long flags;
+ struct bfad_s *bfad = ptr;
+ unsigned long flags;
- bfad = (struct bfad_s *)ptr;
+ if (kthread_should_stop())
+ return 0;
- while (!kthread_should_stop()) {
+ /* Send event BFAD_E_INIT_SUCCESS */
+ bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
- /* Send event BFAD_E_INIT_SUCCESS */
- bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
-
- spin_lock_irqsave(&bfad->bfad_lock, flags);
- bfad->bfad_tsk = NULL;
- spin_unlock_irqrestore(&bfad->bfad_lock, flags);
-
- break;
- }
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ bfad->bfad_tsk = NULL;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
return 0;
}
diff --git a/firmware/ihex2fw.c b/firmware/ihex2fw.c
index cf38e15..08d90e2 100644
--- a/firmware/ihex2fw.c
+++ b/firmware/ihex2fw.c
@@ -86,6 +86,7 @@
case 'j':
include_jump = 1;
break;
+ default:
return usage();
}
}
diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c
index f2ba88a..82d14cd 100644
--- a/fs/adfs/dir_fplus.c
+++ b/fs/adfs/dir_fplus.c
@@ -61,6 +61,7 @@
kcalloc(size, sizeof(struct buffer_head *),
GFP_KERNEL);
if (!bh_fplus) {
+ ret = -ENOMEM;
adfs_error(sb, "not enough memory for"
" dir object %X (%d blocks)", id, size);
goto out;
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 9852bdf..a19c31d 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -316,7 +316,7 @@
dm = kmalloc(nzones * sizeof(*dm), GFP_KERNEL);
if (dm == NULL) {
adfs_error(sb, "not enough memory");
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
for (zone = 0; zone < nzones; zone++, map_addr++) {
@@ -349,7 +349,7 @@
brelse(dm[zone].dm_bh);
kfree(dm);
- return NULL;
+ return ERR_PTR(-EIO);
}
static inline unsigned long adfs_discsize(struct adfs_discrecord *dr, int block_bits)
@@ -370,6 +370,7 @@
unsigned char *b_data;
struct adfs_sb_info *asb;
struct inode *root;
+ int ret = -EINVAL;
sb->s_flags |= MS_NODIRATIME;
@@ -391,6 +392,7 @@
sb_set_blocksize(sb, BLOCK_SIZE);
if (!(bh = sb_bread(sb, ADFS_DISCRECORD / BLOCK_SIZE))) {
adfs_error(sb, "unable to read superblock");
+ ret = -EIO;
goto error;
}
@@ -400,6 +402,7 @@
if (!silent)
printk("VFS: Can't find an adfs filesystem on dev "
"%s.\n", sb->s_id);
+ ret = -EINVAL;
goto error_free_bh;
}
@@ -412,6 +415,7 @@
if (!silent)
printk("VPS: Can't find an adfs filesystem on dev "
"%s.\n", sb->s_id);
+ ret = -EINVAL;
goto error_free_bh;
}
@@ -421,11 +425,13 @@
if (!bh) {
adfs_error(sb, "couldn't read superblock on "
"2nd try.");
+ ret = -EIO;
goto error;
}
b_data = bh->b_data + (ADFS_DISCRECORD % sb->s_blocksize);
if (adfs_checkbblk(b_data)) {
adfs_error(sb, "disc record mismatch, very weird!");
+ ret = -EINVAL;
goto error_free_bh;
}
dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
@@ -433,6 +439,7 @@
if (!silent)
printk(KERN_ERR "VFS: Unsupported blocksize on dev "
"%s.\n", sb->s_id);
+ ret = -EINVAL;
goto error;
}
@@ -447,10 +454,12 @@
asb->s_size = adfs_discsize(dr, sb->s_blocksize_bits);
asb->s_version = dr->format_version;
asb->s_log2sharesize = dr->log2sharesize;
-
+
asb->s_map = adfs_read_map(sb, dr);
- if (!asb->s_map)
+ if (IS_ERR(asb->s_map)) {
+ ret = PTR_ERR(asb->s_map);
goto error_free_bh;
+ }
brelse(bh);
@@ -499,6 +508,7 @@
brelse(asb->s_map[i].dm_bh);
kfree(asb->s_map);
adfs_error(sb, "get root inode failed\n");
+ ret = -EIO;
goto error;
}
return 0;
@@ -508,7 +518,7 @@
error:
sb->s_fs_info = NULL;
kfree(asb);
- return -EINVAL;
+ return ret;
}
static struct dentry *adfs_mount(struct file_system_type *fs_type,
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index c8764bd..cffe837 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -106,18 +106,22 @@
spinlock_t work_lock; /* protects sb_work and work_queued */
};
-#define SF_INTL 0x0001 /* International filesystem. */
-#define SF_BM_VALID 0x0002 /* Bitmap is valid. */
-#define SF_IMMUTABLE 0x0004 /* Protection bits cannot be changed */
-#define SF_QUIET 0x0008 /* chmod errors will be not reported */
-#define SF_SETUID 0x0010 /* Ignore Amiga uid */
-#define SF_SETGID 0x0020 /* Ignore Amiga gid */
-#define SF_SETMODE 0x0040 /* Ignore Amiga protection bits */
-#define SF_MUFS 0x0100 /* Use MUFS uid/gid mapping */
-#define SF_OFS 0x0200 /* Old filesystem */
-#define SF_PREFIX 0x0400 /* Buffer for prefix is allocated */
-#define SF_VERBOSE 0x0800 /* Talk about fs when mounting */
-#define SF_NO_TRUNCATE 0x1000 /* Don't truncate filenames */
+#define AFFS_MOUNT_SF_INTL 0x0001 /* International filesystem. */
+#define AFFS_MOUNT_SF_BM_VALID 0x0002 /* Bitmap is valid. */
+#define AFFS_MOUNT_SF_IMMUTABLE 0x0004 /* Protection bits cannot be changed */
+#define AFFS_MOUNT_SF_QUIET 0x0008 /* chmod errors will be not reported */
+#define AFFS_MOUNT_SF_SETUID 0x0010 /* Ignore Amiga uid */
+#define AFFS_MOUNT_SF_SETGID 0x0020 /* Ignore Amiga gid */
+#define AFFS_MOUNT_SF_SETMODE 0x0040 /* Ignore Amiga protection bits */
+#define AFFS_MOUNT_SF_MUFS 0x0100 /* Use MUFS uid/gid mapping */
+#define AFFS_MOUNT_SF_OFS 0x0200 /* Old filesystem */
+#define AFFS_MOUNT_SF_PREFIX 0x0400 /* Buffer for prefix is allocated */
+#define AFFS_MOUNT_SF_VERBOSE 0x0800 /* Talk about fs when mounting */
+#define AFFS_MOUNT_SF_NO_TRUNCATE 0x1000 /* Don't truncate filenames */
+
+#define affs_clear_opt(o, opt) (o &= ~AFFS_MOUNT_##opt)
+#define affs_set_opt(o, opt) (o |= AFFS_MOUNT_##opt)
+#define affs_test_opt(o, opt) ((o) & AFFS_MOUNT_##opt)
/* short cut to get to the affs specific sb data */
static inline struct affs_sb_info *AFFS_SB(struct super_block *sb)
diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 388da1e..5022ac9 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -472,7 +472,8 @@
affs_nofilenametruncate(const struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
- return AFFS_SB(inode->i_sb)->s_flags & SF_NO_TRUNCATE;
+
+ return affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_NO_TRUNCATE);
}
diff --git a/fs/affs/file.c b/fs/affs/file.c
index dcf2795..659c579 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -914,7 +914,7 @@
if (inode->i_size) {
AFFS_I(inode)->i_blkcnt = last_blk + 1;
AFFS_I(inode)->i_extcnt = ext + 1;
- if (AFFS_SB(sb)->s_flags & SF_OFS) {
+ if (affs_test_opt(AFFS_SB(sb)->s_flags, SF_OFS)) {
struct buffer_head *bh = affs_bread_ino(inode, last_blk, 0);
u32 tmp;
if (IS_ERR(bh)) {
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index 6f34510..9628003 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -66,23 +66,23 @@
AFFS_I(inode)->i_lastalloc = 0;
AFFS_I(inode)->i_pa_cnt = 0;
- if (sbi->s_flags & SF_SETMODE)
+ if (affs_test_opt(sbi->s_flags, SF_SETMODE))
inode->i_mode = sbi->s_mode;
else
inode->i_mode = prot_to_mode(prot);
id = be16_to_cpu(tail->uid);
- if (id == 0 || sbi->s_flags & SF_SETUID)
+ if (id == 0 || affs_test_opt(sbi->s_flags, SF_SETUID))
inode->i_uid = sbi->s_uid;
- else if (id == 0xFFFF && sbi->s_flags & SF_MUFS)
+ else if (id == 0xFFFF && affs_test_opt(sbi->s_flags, SF_MUFS))
i_uid_write(inode, 0);
else
i_uid_write(inode, id);
id = be16_to_cpu(tail->gid);
- if (id == 0 || sbi->s_flags & SF_SETGID)
+ if (id == 0 || affs_test_opt(sbi->s_flags, SF_SETGID))
inode->i_gid = sbi->s_gid;
- else if (id == 0xFFFF && sbi->s_flags & SF_MUFS)
+ else if (id == 0xFFFF && affs_test_opt(sbi->s_flags, SF_MUFS))
i_gid_write(inode, 0);
else
i_gid_write(inode, id);
@@ -94,7 +94,7 @@
/* fall through */
case ST_USERDIR:
if (be32_to_cpu(tail->stype) == ST_USERDIR ||
- sbi->s_flags & SF_SETMODE) {
+ affs_test_opt(sbi->s_flags, SF_SETMODE)) {
if (inode->i_mode & S_IRUSR)
inode->i_mode |= S_IXUSR;
if (inode->i_mode & S_IRGRP)
@@ -133,7 +133,8 @@
}
if (tail->link_chain)
set_nlink(inode, 2);
- inode->i_mapping->a_ops = (sbi->s_flags & SF_OFS) ? &affs_aops_ofs : &affs_aops;
+ inode->i_mapping->a_ops = affs_test_opt(sbi->s_flags, SF_OFS) ?
+ &affs_aops_ofs : &affs_aops;
inode->i_op = &affs_file_inode_operations;
inode->i_fop = &affs_file_operations;
break;
@@ -190,15 +191,15 @@
if (!(inode->i_ino == AFFS_SB(sb)->s_root_block)) {
uid = i_uid_read(inode);
gid = i_gid_read(inode);
- if (AFFS_SB(sb)->s_flags & SF_MUFS) {
+ if (affs_test_opt(AFFS_SB(sb)->s_flags, SF_MUFS)) {
if (uid == 0 || uid == 0xFFFF)
uid = uid ^ ~0;
if (gid == 0 || gid == 0xFFFF)
gid = gid ^ ~0;
}
- if (!(AFFS_SB(sb)->s_flags & SF_SETUID))
+ if (!affs_test_opt(AFFS_SB(sb)->s_flags, SF_SETUID))
tail->uid = cpu_to_be16(uid);
- if (!(AFFS_SB(sb)->s_flags & SF_SETGID))
+ if (!affs_test_opt(AFFS_SB(sb)->s_flags, SF_SETGID))
tail->gid = cpu_to_be16(gid);
}
}
@@ -221,11 +222,14 @@
if (error)
goto out;
- if (((attr->ia_valid & ATTR_UID) && (AFFS_SB(inode->i_sb)->s_flags & SF_SETUID)) ||
- ((attr->ia_valid & ATTR_GID) && (AFFS_SB(inode->i_sb)->s_flags & SF_SETGID)) ||
+ if (((attr->ia_valid & ATTR_UID) &&
+ affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_SETUID)) ||
+ ((attr->ia_valid & ATTR_GID) &&
+ affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_SETGID)) ||
((attr->ia_valid & ATTR_MODE) &&
- (AFFS_SB(inode->i_sb)->s_flags & (SF_SETMODE | SF_IMMUTABLE)))) {
- if (!(AFFS_SB(inode->i_sb)->s_flags & SF_QUIET))
+ (AFFS_SB(inode->i_sb)->s_flags &
+ (AFFS_MOUNT_SF_SETMODE | AFFS_MOUNT_SF_IMMUTABLE)))) {
+ if (!affs_test_opt(AFFS_SB(inode->i_sb)->s_flags, SF_QUIET))
error = -EPERM;
goto out;
}
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index ffb7bd8..ec8ca0e 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -53,7 +53,8 @@
static inline toupper_t
affs_get_toupper(struct super_block *sb)
{
- return AFFS_SB(sb)->s_flags & SF_INTL ? affs_intl_toupper : affs_toupper;
+ return affs_test_opt(AFFS_SB(sb)->s_flags, SF_INTL) ?
+ affs_intl_toupper : affs_toupper;
}
/*
@@ -275,7 +276,8 @@
inode->i_op = &affs_file_inode_operations;
inode->i_fop = &affs_file_operations;
- inode->i_mapping->a_ops = (AFFS_SB(sb)->s_flags & SF_OFS) ? &affs_aops_ofs : &affs_aops;
+ inode->i_mapping->a_ops = affs_test_opt(AFFS_SB(sb)->s_flags, SF_OFS) ?
+ &affs_aops_ofs : &affs_aops;
error = affs_add_entry(dir, inode, dentry, ST_FILE);
if (error) {
clear_nlink(inode);
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 4cf0e91..3f89c9e 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -227,22 +227,22 @@
if (match_octal(&args[0], &option))
return 0;
*mode = option & 0777;
- *mount_opts |= SF_SETMODE;
+ affs_set_opt(*mount_opts, SF_SETMODE);
break;
case Opt_mufs:
- *mount_opts |= SF_MUFS;
+ affs_set_opt(*mount_opts, SF_MUFS);
break;
case Opt_notruncate:
- *mount_opts |= SF_NO_TRUNCATE;
+ affs_set_opt(*mount_opts, SF_NO_TRUNCATE);
break;
case Opt_prefix:
*prefix = match_strdup(&args[0]);
if (!*prefix)
return 0;
- *mount_opts |= SF_PREFIX;
+ affs_set_opt(*mount_opts, SF_PREFIX);
break;
case Opt_protect:
- *mount_opts |= SF_IMMUTABLE;
+ affs_set_opt(*mount_opts, SF_IMMUTABLE);
break;
case Opt_reserved:
if (match_int(&args[0], reserved))
@@ -258,7 +258,7 @@
*gid = make_kgid(current_user_ns(), option);
if (!gid_valid(*gid))
return 0;
- *mount_opts |= SF_SETGID;
+ affs_set_opt(*mount_opts, SF_SETGID);
break;
case Opt_setuid:
if (match_int(&args[0], &option))
@@ -266,10 +266,10 @@
*uid = make_kuid(current_user_ns(), option);
if (!uid_valid(*uid))
return 0;
- *mount_opts |= SF_SETUID;
+ affs_set_opt(*mount_opts, SF_SETUID);
break;
case Opt_verbose:
- *mount_opts |= SF_VERBOSE;
+ affs_set_opt(*mount_opts, SF_VERBOSE);
break;
case Opt_volume: {
char *vol = match_strdup(&args[0]);
@@ -435,30 +435,31 @@
case MUFS_FS:
case MUFS_INTLFFS:
case MUFS_DCFFS:
- sbi->s_flags |= SF_MUFS;
+ affs_set_opt(sbi->s_flags, SF_MUFS);
/* fall thru */
case FS_INTLFFS:
case FS_DCFFS:
- sbi->s_flags |= SF_INTL;
+ affs_set_opt(sbi->s_flags, SF_INTL);
break;
case MUFS_FFS:
- sbi->s_flags |= SF_MUFS;
+ affs_set_opt(sbi->s_flags, SF_MUFS);
break;
case FS_FFS:
break;
case MUFS_OFS:
- sbi->s_flags |= SF_MUFS;
+ affs_set_opt(sbi->s_flags, SF_MUFS);
/* fall thru */
case FS_OFS:
- sbi->s_flags |= SF_OFS;
+ affs_set_opt(sbi->s_flags, SF_OFS);
sb->s_flags |= MS_NOEXEC;
break;
case MUFS_DCOFS:
case MUFS_INTLOFS:
- sbi->s_flags |= SF_MUFS;
+ affs_set_opt(sbi->s_flags, SF_MUFS);
case FS_DCOFS:
case FS_INTLOFS:
- sbi->s_flags |= SF_INTL | SF_OFS;
+ affs_set_opt(sbi->s_flags, SF_INTL);
+ affs_set_opt(sbi->s_flags, SF_OFS);
sb->s_flags |= MS_NOEXEC;
break;
default:
@@ -467,7 +468,7 @@
return -EINVAL;
}
- if (mount_flags & SF_VERBOSE) {
+ if (affs_test_opt(mount_flags, SF_VERBOSE)) {
u8 len = AFFS_ROOT_TAIL(sb, root_bh)->disk_name[0];
pr_notice("Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n",
len > 31 ? 31 : len,
@@ -478,7 +479,7 @@
sb->s_flags |= MS_NODEV | MS_NOSUID;
sbi->s_data_blksize = sb->s_blocksize;
- if (sbi->s_flags & SF_OFS)
+ if (affs_test_opt(sbi->s_flags, SF_OFS))
sbi->s_data_blksize -= 24;
tmp_flags = sb->s_flags;
@@ -493,7 +494,7 @@
if (IS_ERR(root_inode))
return PTR_ERR(root_inode);
- if (AFFS_SB(sb)->s_flags & SF_INTL)
+ if (affs_test_opt(AFFS_SB(sb)->s_flags, SF_INTL))
sb->s_d_op = &affs_intl_dentry_operations;
else
sb->s_d_op = &affs_dentry_operations;
@@ -520,10 +521,14 @@
int root_block;
unsigned long mount_flags;
int res = 0;
- char *new_opts = kstrdup(data, GFP_KERNEL);
+ char *new_opts;
char volume[32];
char *prefix = NULL;
+ new_opts = kstrdup(data, GFP_KERNEL);
+ if (!new_opts)
+ return -ENOMEM;
+
pr_debug("%s(flags=0x%x,opts=\"%s\")\n", __func__, *flags, data);
sync_filesystem(sb);
diff --git a/fs/befs/befs.h b/fs/befs/befs.h
index 3a7813a..1fead8d 100644
--- a/fs/befs/befs.h
+++ b/fs/befs/befs.h
@@ -19,16 +19,16 @@
* BeFS in memory structures
*/
-typedef struct befs_mount_options {
+struct befs_mount_options {
kgid_t gid;
kuid_t uid;
int use_gid;
int use_uid;
int debug;
char *iocharset;
-} befs_mount_options;
+};
-typedef struct befs_sb_info {
+struct befs_sb_info {
u32 magic1;
u32 block_size;
u32 block_shift;
@@ -52,12 +52,11 @@
befs_inode_addr indices;
u32 magic3;
- befs_mount_options mount_opts;
+ struct befs_mount_options mount_opts;
struct nls_table *nls;
+};
-} befs_sb_info;
-
-typedef struct befs_inode_info {
+struct befs_inode_info {
u32 i_flags;
u32 i_type;
@@ -71,8 +70,7 @@
} i_data;
struct inode vfs_inode;
-
-} befs_inode_info;
+};
enum befs_err {
BEFS_OK,
@@ -105,13 +103,13 @@
/* Gets a pointer to the private portion of the super_block
* structure from the public part
*/
-static inline befs_sb_info *
+static inline struct befs_sb_info *
BEFS_SB(const struct super_block *super)
{
- return (befs_sb_info *) super->s_fs_info;
+ return (struct befs_sb_info *) super->s_fs_info;
}
-static inline befs_inode_info *
+static inline struct befs_inode_info *
BEFS_I(const struct inode *inode)
{
return list_entry(inode, struct befs_inode_info, vfs_inode);
diff --git a/fs/befs/datastream.c b/fs/befs/datastream.c
index 1e8e0b8..ebd5071 100644
--- a/fs/befs/datastream.c
+++ b/fs/befs/datastream.c
@@ -168,7 +168,7 @@
befs_blocknr_t blocks;
befs_blocknr_t datablocks; /* File data blocks */
befs_blocknr_t metablocks; /* FS metadata blocks */
- befs_sb_info *befs_sb = BEFS_SB(sb);
+ struct befs_sb_info *befs_sb = BEFS_SB(sb);
befs_debug(sb, "---> %s", __func__);
@@ -428,7 +428,7 @@
struct buffer_head *indir_block;
befs_block_run indir_run;
befs_disk_inode_addr *iaddr_array = NULL;
- befs_sb_info *befs_sb = BEFS_SB(sb);
+ struct befs_sb_info *befs_sb = BEFS_SB(sb);
befs_blocknr_t indir_start_blk =
data->max_indirect_range >> befs_sb->block_shift;
diff --git a/fs/befs/io.c b/fs/befs/io.c
index 0408a3d..7a5b4ec 100644
--- a/fs/befs/io.c
+++ b/fs/befs/io.c
@@ -28,7 +28,7 @@
{
struct buffer_head *bh = NULL;
befs_blocknr_t block = 0;
- befs_sb_info *befs_sb = BEFS_SB(sb);
+ struct befs_sb_info *befs_sb = BEFS_SB(sb);
befs_debug(sb, "---> Enter %s "
"[%u, %hu, %hu]", __func__, iaddr.allocation_group,
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index e089f19..16e0a48 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -51,7 +51,7 @@
static void befs_put_super(struct super_block *);
static int befs_remount(struct super_block *, int *, char *);
static int befs_statfs(struct dentry *, struct kstatfs *);
-static int parse_options(char *, befs_mount_options *);
+static int parse_options(char *, struct befs_mount_options *);
static const struct super_operations befs_sops = {
.alloc_inode = befs_alloc_inode, /* allocate a new inode */
@@ -304,9 +304,8 @@
{
struct buffer_head *bh = NULL;
befs_inode *raw_inode = NULL;
-
- befs_sb_info *befs_sb = BEFS_SB(sb);
- befs_inode_info *befs_ino = NULL;
+ struct befs_sb_info *befs_sb = BEFS_SB(sb);
+ struct befs_inode_info *befs_ino = NULL;
struct inode *inode;
long ret = -EIO;
@@ -472,7 +471,7 @@
befs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct super_block *sb = dentry->d_sb;
- befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
+ struct befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
befs_data_stream *data = &befs_ino->i_data.ds;
befs_off_t len = data->size;
char *link;
@@ -502,7 +501,8 @@
static void *
befs_fast_follow_link(struct dentry *dentry, struct nameidata *nd)
{
- befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
+ struct befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
+
nd_set_link(nd, befs_ino->i_data.symlink);
return NULL;
}
@@ -669,7 +669,7 @@
};
static int
-parse_options(char *options, befs_mount_options * opts)
+parse_options(char *options, struct befs_mount_options *opts)
{
char *p;
substring_t args[MAX_OPT_ARGS];
@@ -769,7 +769,7 @@
befs_fill_super(struct super_block *sb, void *data, int silent)
{
struct buffer_head *bh;
- befs_sb_info *befs_sb;
+ struct befs_sb_info *befs_sb;
befs_super_block *disk_sb;
struct inode *root;
long ret = -EINVAL;
diff --git a/fs/befs/super.c b/fs/befs/super.c
index ca40f82..aeafc4d 100644
--- a/fs/befs/super.c
+++ b/fs/befs/super.c
@@ -24,7 +24,7 @@
int
befs_load_sb(struct super_block *sb, befs_super_block * disk_sb)
{
- befs_sb_info *befs_sb = BEFS_SB(sb);
+ struct befs_sb_info *befs_sb = BEFS_SB(sb);
/* Check the byte order of the filesystem */
if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_LE)
@@ -59,7 +59,7 @@
int
befs_check_sb(struct super_block *sb)
{
- befs_sb_info *befs_sb = BEFS_SB(sb);
+ struct befs_sb_info *befs_sb = BEFS_SB(sb);
/* Check magic headers of super block */
if ((befs_sb->magic1 != BEFS_SUPER_MAGIC1)
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 08063ae..7a818277 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -86,7 +86,7 @@
inode = new_inode(s);
if (!inode)
- return -ENOSPC;
+ return -ENOMEM;
mutex_lock(&info->bfs_lock);
ino = find_first_zero_bit(info->si_imap, info->si_lasti + 1);
if (ino > info->si_lasti) {
@@ -293,7 +293,7 @@
for (block = sblock; block <= eblock; block++) {
bh = sb_bread(dir->i_sb, block);
if (!bh)
- return -ENOSPC;
+ return -EIO;
for (off = 0; off < BFS_BSIZE; off += BFS_DIRENT_SIZE) {
de = (struct bfs_dirent *)(bh->b_data + off);
if (!de->ino) {
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 97aff28..9dcb054 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -9,6 +9,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
@@ -521,9 +522,8 @@
static void entry_status(Node *e, char *page)
{
- char *dp;
- char *status = "disabled";
- const char *flags = "flags: ";
+ char *dp = page;
+ const char *status = "disabled";
if (test_bit(Enabled, &e->flags))
status = "enabled";
@@ -533,12 +533,10 @@
return;
}
- sprintf(page, "%s\ninterpreter %s\n", status, e->interpreter);
- dp = page + strlen(page);
+ dp += sprintf(dp, "%s\ninterpreter %s\n", status, e->interpreter);
/* print the special flags */
- sprintf(dp, "%s", flags);
- dp += strlen(flags);
+ dp += sprintf(dp, "flags: ");
if (e->flags & MISC_FMT_PRESERVE_ARGV0)
*dp++ = 'P';
if (e->flags & MISC_FMT_OPEN_BINARY)
@@ -550,21 +548,11 @@
if (!test_bit(Magic, &e->flags)) {
sprintf(dp, "extension .%s\n", e->magic);
} else {
- int i;
-
- sprintf(dp, "offset %i\nmagic ", e->offset);
- dp = page + strlen(page);
- for (i = 0; i < e->size; i++) {
- sprintf(dp, "%02x", 0xff & (int) (e->magic[i]));
- dp += 2;
- }
+ dp += sprintf(dp, "offset %i\nmagic ", e->offset);
+ dp = bin2hex(dp, e->magic, e->size);
if (e->mask) {
- sprintf(dp, "\nmask ");
- dp += 6;
- for (i = 0; i < e->size; i++) {
- sprintf(dp, "%02x", 0xff & (int) (e->mask[i]));
- dp += 2;
- }
+ dp += sprintf(dp, "\nmask ");
+ dp = bin2hex(dp, e->mask, e->size);
}
*dp++ = '\n';
*dp = '\0';
diff --git a/fs/exec.c b/fs/exec.c
index c7f9b73..02bfd98 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -926,10 +926,14 @@
if (!thread_group_leader(tsk)) {
struct task_struct *leader = tsk->group_leader;
- sig->notify_count = -1; /* for exit_notify() */
for (;;) {
threadgroup_change_begin(tsk);
write_lock_irq(&tasklist_lock);
+ /*
+ * Do this under tasklist_lock to ensure that
+ * exit_notify() can't miss ->group_exit_task
+ */
+ sig->notify_count = -1;
if (likely(leader->exit_state))
break;
__set_current_state(TASK_KILLABLE);
@@ -1078,7 +1082,13 @@
if (retval)
goto out;
+ /*
+ * Must be called _before_ exec_mmap() as bprm->mm is
+ * not visibile until then. This also enables the update
+ * to be lockless.
+ */
set_mm_exe_file(bprm->mm, bprm->file);
+
/*
* Release all of the old mmap stuff
*/
diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 91ad9e1..93fc622 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -8,9 +8,7 @@
* May 1999. AV. Fixed the bogosity with FAT32 (read "FAT28"). Fscking lusers.
*/
-#include <linux/fs.h>
#include <linux/slab.h>
-#include <linux/buffer_head.h>
#include "fat.h"
/* this must be > 0. */
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index c5d6bb9..4afc4d9 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -13,13 +13,9 @@
* Short name translation 1999, 2001 by Wolfram Pienkoss <wp@bszh.de>
*/
-#include <linux/module.h>
#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/buffer_head.h>
#include <linux/compat.h>
#include <linux/uaccess.h>
-#include <linux/kernel.h>
#include "fat.h"
/*
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index 64e295e..be5e153 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -2,11 +2,8 @@
#define _FAT_H
#include <linux/buffer_head.h>
-#include <linux/string.h>
#include <linux/nls.h>
-#include <linux/fs.h>
#include <linux/hash.h>
-#include <linux/mutex.h>
#include <linux/ratelimit.h>
#include <linux/msdos_fs.h>
@@ -66,7 +63,7 @@
unsigned short sec_per_clus; /* sectors/cluster */
unsigned short cluster_bits; /* log2(cluster_size) */
unsigned int cluster_size; /* cluster size */
- unsigned char fats, fat_bits; /* number of FATs, FAT bits (12 or 16) */
+ unsigned char fats, fat_bits; /* number of FATs, FAT bits (12,16 or 32) */
unsigned short fat_start;
unsigned long fat_length; /* FAT start & length (sec.) */
unsigned long dir_start;
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index 260705c..8226557 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -3,9 +3,6 @@
* Released under GPL v2.
*/
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/msdos_fs.h>
#include <linux/blkdev.h>
#include "fat.h"
diff --git a/fs/fat/file.c b/fs/fat/file.c
index 1e98d33..cf50d93 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -10,10 +10,6 @@
#include <linux/module.h>
#include <linux/compat.h>
#include <linux/mount.h>
-#include <linux/time.h>
-#include <linux/buffer_head.h>
-#include <linux/writeback.h>
-#include <linux/backing-dev.h>
#include <linux/blkdev.h>
#include <linux/fsnotify.h>
#include <linux/security.h>
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 41b7299..c067746 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -11,20 +11,12 @@
*/
#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/slab.h>
-#include <linux/seq_file.h>
#include <linux/pagemap.h>
#include <linux/mpage.h>
-#include <linux/buffer_head.h>
-#include <linux/mount.h>
#include <linux/vfs.h>
+#include <linux/seq_file.h>
#include <linux/parser.h>
#include <linux/uio.h>
-#include <linux/writeback.h>
-#include <linux/log2.h>
-#include <linux/hash.h>
#include <linux/blkdev.h>
#include <asm/unaligned.h>
#include "fat.h"
@@ -1278,8 +1270,7 @@
static int fat_read_root(struct inode *inode)
{
- struct super_block *sb = inode->i_sb;
- struct msdos_sb_info *sbi = MSDOS_SB(sb);
+ struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
int error;
MSDOS_I(inode)->i_pos = MSDOS_ROOT_INO;
diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index d8da2d2..c4589e9 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -6,10 +6,6 @@
* and date_dos2unix for date==0 by Igor Zhbanov(bsg@uniyar.ac.ru)
*/
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/buffer_head.h>
-#include <linux/time.h>
#include "fat.h"
/*
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index a783b0e..cc6a854 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -7,8 +7,6 @@
*/
#include <linux/module.h>
-#include <linux/time.h>
-#include <linux/buffer_head.h>
#include "fat.h"
/* Characters that are undesirable in an MS-DOS file name */
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index b8b92c2..7e0974e 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -16,10 +16,8 @@
*/
#include <linux/module.h>
-#include <linux/jiffies.h>
#include <linux/ctype.h>
#include <linux/slab.h>
-#include <linux/buffer_head.h>
#include <linux/namei.h>
#include "fat.h"
diff --git a/fs/file.c b/fs/file.c
index ee738ea..93c5f89 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -638,8 +638,7 @@
file = fcheck_files(files, fd);
if (file) {
/* File object ref couldn't be taken */
- if ((file->f_mode & mask) ||
- !atomic_long_inc_not_zero(&file->f_count))
+ if ((file->f_mode & mask) || !get_file_rcu(file))
file = NULL;
}
rcu_read_unlock();
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 1455668..36d1a6a 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -197,7 +197,7 @@
inode = hfs_new_inode(dir, &dentry->d_name, mode);
if (!inode)
- return -ENOSPC;
+ return -ENOMEM;
res = hfs_cat_create(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
@@ -226,7 +226,7 @@
inode = hfs_new_inode(dir, &dentry->d_name, S_IFDIR | mode);
if (!inode)
- return -ENOSPC;
+ return -ENOMEM;
res = hfs_cat_create(inode->i_ino, dir, &dentry->d_name, inode);
if (res) {
diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c
index c1422d9..528e38b 100644
--- a/fs/hfsplus/bfind.c
+++ b/fs/hfsplus/bfind.c
@@ -118,9 +118,7 @@
int b, e;
int res;
- if (!rec_found)
- BUG();
-
+ BUG_ON(!rec_found);
b = 0;
e = bnode->num_recs - 1;
res = -ENOENT;
diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c
index 7892e6f..022974a 100644
--- a/fs/hfsplus/catalog.c
+++ b/fs/hfsplus/catalog.c
@@ -350,10 +350,11 @@
&fd.search_key->cat.name.unicode,
off + 2, len);
fd.search_key->key_len = cpu_to_be16(6 + len);
- } else
+ } else {
err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
if (unlikely(err))
goto out;
+ }
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err)
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index f0235c1..3074609 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -434,7 +434,7 @@
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode;
- int res = -ENOSPC;
+ int res = -ENOMEM;
mutex_lock(&sbi->vh_mutex);
inode = hfsplus_new_inode(dir->i_sb, S_IFLNK | S_IRWXUGO);
@@ -476,7 +476,7 @@
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb);
struct inode *inode;
- int res = -ENOSPC;
+ int res = -ENOMEM;
mutex_lock(&sbi->vh_mutex);
inode = hfsplus_new_inode(dir->i_sb, mode);
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index a43811f..b0afedb 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -253,6 +253,12 @@
if ((attr->ia_valid & ATTR_SIZE) &&
attr->ia_size != i_size_read(inode)) {
inode_dio_wait(inode);
+ if (attr->ia_size > inode->i_size) {
+ error = generic_cont_expand_simple(inode,
+ attr->ia_size);
+ if (error)
+ return error;
+ }
truncate_setsize(inode, attr->ia_size);
hfsplus_file_truncate(inode);
}
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index d3ff5cc..8e98f5d 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -76,7 +76,7 @@
{
struct inode *inode = file_inode(file);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
- unsigned int flags;
+ unsigned int flags, new_fl = 0;
int err = 0;
err = mnt_want_write_file(file);
@@ -110,14 +110,12 @@
}
if (flags & FS_IMMUTABLE_FL)
- inode->i_flags |= S_IMMUTABLE;
- else
- inode->i_flags &= ~S_IMMUTABLE;
+ new_fl |= S_IMMUTABLE;
if (flags & FS_APPEND_FL)
- inode->i_flags |= S_APPEND;
- else
- inode->i_flags &= ~S_APPEND;
+ new_fl |= S_APPEND;
+
+ inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND);
if (flags & FS_NODUMP_FL)
hip->userflags |= HFSPLUS_FLG_NODUMP;
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
index d98094a..89f262d 100644
--- a/fs/hfsplus/xattr.c
+++ b/fs/hfsplus/xattr.c
@@ -44,7 +44,7 @@
return -1;
}
-static inline int is_known_namespace(const char *name)
+static bool is_known_namespace(const char *name)
{
if (strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) &&
strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
@@ -424,6 +424,28 @@
return len;
}
+int hfsplus_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags,
+ const char *prefix, size_t prefixlen)
+{
+ char *xattr_name;
+ int res;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ strcpy(xattr_name, prefix);
+ strcpy(xattr_name + prefixlen, name);
+ res = __hfsplus_setxattr(dentry->d_inode, xattr_name, value, size,
+ flags);
+ kfree(xattr_name);
+ return res;
+}
+
static ssize_t hfsplus_getxattr_finder_info(struct inode *inode,
void *value, size_t size)
{
@@ -560,6 +582,30 @@
return res;
}
+ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
+ void *value, size_t size,
+ const char *prefix, size_t prefixlen)
+{
+ int res;
+ char *xattr_name;
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+
+ strcpy(xattr_name, prefix);
+ strcpy(xattr_name + prefixlen, name);
+
+ res = __hfsplus_getxattr(dentry->d_inode, xattr_name, value, size);
+ kfree(xattr_name);
+ return res;
+
+}
+
static inline int can_list(const char *xattr_name)
{
if (!xattr_name)
@@ -806,9 +852,6 @@
static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
- char *xattr_name;
- int res;
-
if (!strcmp(name, ""))
return -EINVAL;
@@ -818,24 +861,19 @@
*/
if (is_known_namespace(name))
return -EOPNOTSUPP;
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN
- + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
- strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
- res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
- kfree(xattr_name);
- return res;
+ /*
+ * osx is the namespace we use to indicate an unprefixed
+ * attribute on the filesystem (like the ones that OS X
+ * creates), so we pass the name through unmodified (after
+ * ensuring it doesn't conflict with another namespace).
+ */
+ return __hfsplus_getxattr(dentry->d_inode, name, buffer, size);
}
static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name,
const void *buffer, size_t size, int flags, int type)
{
- char *xattr_name;
- int res;
-
if (!strcmp(name, ""))
return -EINVAL;
@@ -845,16 +883,14 @@
*/
if (is_known_namespace(name))
return -EOPNOTSUPP;
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN
- + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_MAC_OSX_PREFIX);
- strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name);
- res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
- kfree(xattr_name);
- return res;
+ /*
+ * osx is the namespace we use to indicate an unprefixed
+ * attribute on the filesystem (like the ones that OS X
+ * creates), so we pass the name through unmodified (after
+ * ensuring it doesn't conflict with another namespace).
+ */
+ return __hfsplus_setxattr(dentry->d_inode, name, buffer, size, flags);
}
static size_t hfsplus_osx_listxattr(struct dentry *dentry, char *list,
diff --git a/fs/hfsplus/xattr.h b/fs/hfsplus/xattr.h
index 288530c..f9b0955 100644
--- a/fs/hfsplus/xattr.h
+++ b/fs/hfsplus/xattr.h
@@ -21,22 +21,16 @@
int __hfsplus_setxattr(struct inode *inode, const char *name,
const void *value, size_t size, int flags);
-static inline int hfsplus_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
-{
- return __hfsplus_setxattr(dentry->d_inode, name, value, size, flags);
-}
+int hfsplus_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags,
+ const char *prefix, size_t prefixlen);
ssize_t __hfsplus_getxattr(struct inode *inode, const char *name,
- void *value, size_t size);
+ void *value, size_t size);
-static inline ssize_t hfsplus_getxattr(struct dentry *dentry,
- const char *name,
- void *value,
- size_t size)
-{
- return __hfsplus_getxattr(dentry->d_inode, name, value, size);
-}
+ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name,
+ void *value, size_t size,
+ const char *prefix, size_t prefixlen);
ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size);
diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c
index 6ec5e10..aacff00 100644
--- a/fs/hfsplus/xattr_security.c
+++ b/fs/hfsplus/xattr_security.c
@@ -16,43 +16,17 @@
static int hfsplus_security_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
- char *xattr_name;
- int res;
-
- if (!strcmp(name, ""))
- return -EINVAL;
-
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
- GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_SECURITY_PREFIX);
- strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
-
- res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
- kfree(xattr_name);
- return res;
+ return hfsplus_getxattr(dentry, name, buffer, size,
+ XATTR_SECURITY_PREFIX,
+ XATTR_SECURITY_PREFIX_LEN);
}
static int hfsplus_security_setxattr(struct dentry *dentry, const char *name,
const void *buffer, size_t size, int flags, int type)
{
- char *xattr_name;
- int res;
-
- if (!strcmp(name, ""))
- return -EINVAL;
-
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
- GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_SECURITY_PREFIX);
- strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name);
-
- res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
- kfree(xattr_name);
- return res;
+ return hfsplus_setxattr(dentry, name, buffer, size, flags,
+ XATTR_SECURITY_PREFIX,
+ XATTR_SECURITY_PREFIX_LEN);
}
static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list,
diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c
index 3c5f27e..bcf65089 100644
--- a/fs/hfsplus/xattr_trusted.c
+++ b/fs/hfsplus/xattr_trusted.c
@@ -14,43 +14,16 @@
static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
- char *xattr_name;
- int res;
-
- if (!strcmp(name, ""))
- return -EINVAL;
-
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
- GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
- strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
-
- res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
- kfree(xattr_name);
- return res;
+ return hfsplus_getxattr(dentry, name, buffer, size,
+ XATTR_TRUSTED_PREFIX,
+ XATTR_TRUSTED_PREFIX_LEN);
}
static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
const void *buffer, size_t size, int flags, int type)
{
- char *xattr_name;
- int res;
-
- if (!strcmp(name, ""))
- return -EINVAL;
-
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
- GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
- strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
-
- res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
- kfree(xattr_name);
- return res;
+ return hfsplus_setxattr(dentry, name, buffer, size, flags,
+ XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
}
static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list,
diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c
index 2b625a5..5aa0e6d 100644
--- a/fs/hfsplus/xattr_user.c
+++ b/fs/hfsplus/xattr_user.c
@@ -14,43 +14,16 @@
static int hfsplus_user_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
- char *xattr_name;
- int res;
- if (!strcmp(name, ""))
- return -EINVAL;
-
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
- GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_USER_PREFIX);
- strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
-
- res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
- kfree(xattr_name);
- return res;
+ return hfsplus_getxattr(dentry, name, buffer, size,
+ XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
}
static int hfsplus_user_setxattr(struct dentry *dentry, const char *name,
const void *buffer, size_t size, int flags, int type)
{
- char *xattr_name;
- int res;
-
- if (!strcmp(name, ""))
- return -EINVAL;
-
- xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
- GFP_KERNEL);
- if (!xattr_name)
- return -ENOMEM;
- strcpy(xattr_name, XATTR_USER_PREFIX);
- strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
-
- res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
- kfree(xattr_name);
- return res;
+ return hfsplus_setxattr(dentry, name, buffer, size, flags,
+ XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
}
static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list,
diff --git a/fs/locks.c b/fs/locks.c
index 52b780f..653faab 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -2590,6 +2590,44 @@
return 0;
}
+static void __show_fd_locks(struct seq_file *f,
+ struct list_head *head, int *id,
+ struct file *filp, struct files_struct *files)
+{
+ struct file_lock *fl;
+
+ list_for_each_entry(fl, head, fl_list) {
+
+ if (filp != fl->fl_file)
+ continue;
+ if (fl->fl_owner != files &&
+ fl->fl_owner != filp)
+ continue;
+
+ (*id)++;
+ seq_puts(f, "lock:\t");
+ lock_get_status(f, fl, *id, "");
+ }
+}
+
+void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files)
+{
+ struct inode *inode = file_inode(filp);
+ struct file_lock_context *ctx;
+ int id = 0;
+
+ ctx = inode->i_flctx;
+ if (!ctx)
+ return;
+
+ spin_lock(&ctx->flc_lock);
+ __show_fd_locks(f, &ctx->flc_flock, &id, filp, files);
+ __show_fd_locks(f, &ctx->flc_posix, &id, filp, files);
+ __show_fd_locks(f, &ctx->flc_lease, &id, filp, files);
+ spin_unlock(&ctx->flc_lock);
+}
+
static void *locks_start(struct seq_file *f, loff_t *pos)
__acquires(&blocked_lock_lock)
{
diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index 741fd02..8df0f3b 100644
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -405,13 +405,14 @@
static int nilfs_palloc_count_desc_blocks(struct inode *inode,
unsigned long *desc_blocks)
{
- unsigned long blknum;
+ __u64 blknum;
int ret;
ret = nilfs_bmap_last_key(NILFS_I(inode)->i_bmap, &blknum);
if (likely(!ret))
*desc_blocks = DIV_ROUND_UP(
- blknum, NILFS_MDT(inode)->mi_blocks_per_desc_block);
+ (unsigned long)blknum,
+ NILFS_MDT(inode)->mi_blocks_per_desc_block);
return ret;
}
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index aadbd0b..27f75bc 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -152,9 +152,7 @@
*
* %-EEXIST - A record associated with @key already exist.
*/
-int nilfs_bmap_insert(struct nilfs_bmap *bmap,
- unsigned long key,
- unsigned long rec)
+int nilfs_bmap_insert(struct nilfs_bmap *bmap, __u64 key, unsigned long rec)
{
int ret;
@@ -191,19 +189,47 @@
return bmap->b_ops->bop_delete(bmap, key);
}
-int nilfs_bmap_last_key(struct nilfs_bmap *bmap, unsigned long *key)
+/**
+ * nilfs_bmap_seek_key - seek a valid entry and return its key
+ * @bmap: bmap struct
+ * @start: start key number
+ * @keyp: place to store valid key
+ *
+ * Description: nilfs_bmap_seek_key() seeks a valid key on @bmap
+ * starting from @start, and stores it to @keyp if found.
+ *
+ * Return Value: On success, 0 is returned. On error, one of the following
+ * negative error codes is returned.
+ *
+ * %-EIO - I/O error.
+ *
+ * %-ENOMEM - Insufficient amount of memory available.
+ *
+ * %-ENOENT - No valid entry was found
+ */
+int nilfs_bmap_seek_key(struct nilfs_bmap *bmap, __u64 start, __u64 *keyp)
{
- __u64 lastkey;
int ret;
down_read(&bmap->b_sem);
- ret = bmap->b_ops->bop_last_key(bmap, &lastkey);
+ ret = bmap->b_ops->bop_seek_key(bmap, start, keyp);
up_read(&bmap->b_sem);
if (ret < 0)
ret = nilfs_bmap_convert_error(bmap, __func__, ret);
- else
- *key = lastkey;
+ return ret;
+}
+
+int nilfs_bmap_last_key(struct nilfs_bmap *bmap, __u64 *keyp)
+{
+ int ret;
+
+ down_read(&bmap->b_sem);
+ ret = bmap->b_ops->bop_last_key(bmap, keyp);
+ up_read(&bmap->b_sem);
+
+ if (ret < 0)
+ ret = nilfs_bmap_convert_error(bmap, __func__, ret);
return ret;
}
@@ -224,7 +250,7 @@
*
* %-ENOENT - A record associated with @key does not exist.
*/
-int nilfs_bmap_delete(struct nilfs_bmap *bmap, unsigned long key)
+int nilfs_bmap_delete(struct nilfs_bmap *bmap, __u64 key)
{
int ret;
@@ -235,7 +261,7 @@
return nilfs_bmap_convert_error(bmap, __func__, ret);
}
-static int nilfs_bmap_do_truncate(struct nilfs_bmap *bmap, unsigned long key)
+static int nilfs_bmap_do_truncate(struct nilfs_bmap *bmap, __u64 key)
{
__u64 lastkey;
int ret;
@@ -276,7 +302,7 @@
*
* %-ENOMEM - Insufficient amount of memory available.
*/
-int nilfs_bmap_truncate(struct nilfs_bmap *bmap, unsigned long key)
+int nilfs_bmap_truncate(struct nilfs_bmap *bmap, __u64 key)
{
int ret;
diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index b89e680..bfa817c 100644
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -76,8 +76,10 @@
union nilfs_binfo *);
int (*bop_mark)(struct nilfs_bmap *, __u64, int);
- /* The following functions are internal use only. */
+ int (*bop_seek_key)(const struct nilfs_bmap *, __u64, __u64 *);
int (*bop_last_key)(const struct nilfs_bmap *, __u64 *);
+
+ /* The following functions are internal use only. */
int (*bop_check_insert)(const struct nilfs_bmap *, __u64);
int (*bop_check_delete)(struct nilfs_bmap *, __u64);
int (*bop_gather_data)(struct nilfs_bmap *, __u64 *, __u64 *, int);
@@ -153,10 +155,11 @@
int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *);
void nilfs_bmap_write(struct nilfs_bmap *, struct nilfs_inode *);
int nilfs_bmap_lookup_contig(struct nilfs_bmap *, __u64, __u64 *, unsigned);
-int nilfs_bmap_insert(struct nilfs_bmap *, unsigned long, unsigned long);
-int nilfs_bmap_delete(struct nilfs_bmap *, unsigned long);
-int nilfs_bmap_last_key(struct nilfs_bmap *, unsigned long *);
-int nilfs_bmap_truncate(struct nilfs_bmap *, unsigned long);
+int nilfs_bmap_insert(struct nilfs_bmap *bmap, __u64 key, unsigned long rec);
+int nilfs_bmap_delete(struct nilfs_bmap *bmap, __u64 key);
+int nilfs_bmap_seek_key(struct nilfs_bmap *bmap, __u64 start, __u64 *keyp);
+int nilfs_bmap_last_key(struct nilfs_bmap *bmap, __u64 *keyp);
+int nilfs_bmap_truncate(struct nilfs_bmap *bmap, __u64 key);
void nilfs_bmap_clear(struct nilfs_bmap *);
int nilfs_bmap_propagate(struct nilfs_bmap *, struct buffer_head *);
void nilfs_bmap_lookup_dirty_buffers(struct nilfs_bmap *, struct list_head *);
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index ecdbae1..059f371 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -633,6 +633,44 @@
return 0;
}
+/**
+ * nilfs_btree_get_next_key - get next valid key from btree path array
+ * @btree: bmap struct of btree
+ * @path: array of nilfs_btree_path struct
+ * @minlevel: start level
+ * @nextkey: place to store the next valid key
+ *
+ * Return Value: If a next key was found, 0 is returned. Otherwise,
+ * -ENOENT is returned.
+ */
+static int nilfs_btree_get_next_key(const struct nilfs_bmap *btree,
+ const struct nilfs_btree_path *path,
+ int minlevel, __u64 *nextkey)
+{
+ struct nilfs_btree_node *node;
+ int maxlevel = nilfs_btree_height(btree) - 1;
+ int index, next_adj, level;
+
+ /* Next index is already set to bp_index for leaf nodes. */
+ next_adj = 0;
+ for (level = minlevel; level <= maxlevel; level++) {
+ if (level == maxlevel)
+ node = nilfs_btree_get_root(btree);
+ else
+ node = nilfs_btree_get_nonroot_node(path, level);
+
+ index = path[level].bp_index + next_adj;
+ if (index < nilfs_btree_node_get_nchildren(node)) {
+ /* Next key is in this node */
+ *nextkey = nilfs_btree_node_get_key(node, index);
+ return 0;
+ }
+ /* For non-leaf nodes, next index is stored at bp_index + 1. */
+ next_adj = 1;
+ }
+ return -ENOENT;
+}
+
static int nilfs_btree_lookup(const struct nilfs_bmap *btree,
__u64 key, int level, __u64 *ptrp)
{
@@ -1563,6 +1601,27 @@
return ret;
}
+static int nilfs_btree_seek_key(const struct nilfs_bmap *btree, __u64 start,
+ __u64 *keyp)
+{
+ struct nilfs_btree_path *path;
+ const int minlevel = NILFS_BTREE_LEVEL_NODE_MIN;
+ int ret;
+
+ path = nilfs_btree_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ ret = nilfs_btree_do_lookup(btree, path, start, NULL, minlevel, 0);
+ if (!ret)
+ *keyp = start;
+ else if (ret == -ENOENT)
+ ret = nilfs_btree_get_next_key(btree, path, minlevel, keyp);
+
+ nilfs_btree_free_path(path);
+ return ret;
+}
+
static int nilfs_btree_last_key(const struct nilfs_bmap *btree, __u64 *keyp)
{
struct nilfs_btree_path *path;
@@ -2298,7 +2357,9 @@
.bop_assign = nilfs_btree_assign,
.bop_mark = nilfs_btree_mark,
+ .bop_seek_key = nilfs_btree_seek_key,
.bop_last_key = nilfs_btree_last_key,
+
.bop_check_insert = NULL,
.bop_check_delete = nilfs_btree_check_delete,
.bop_gather_data = nilfs_btree_gather_data,
@@ -2318,7 +2379,9 @@
.bop_assign = nilfs_btree_assign_gc,
.bop_mark = NULL,
+ .bop_seek_key = NULL,
.bop_last_key = NULL,
+
.bop_check_insert = NULL,
.bop_check_delete = NULL,
.bop_gather_data = NULL,
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index 0d58075..b6596ca 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -53,6 +53,13 @@
return do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
}
+static __u64 nilfs_cpfile_first_checkpoint_in_block(const struct inode *cpfile,
+ unsigned long blkoff)
+{
+ return (__u64)nilfs_cpfile_checkpoints_per_block(cpfile) * blkoff
+ + 1 - NILFS_MDT(cpfile)->mi_first_entry_offset;
+}
+
static unsigned long
nilfs_cpfile_checkpoints_in_block(const struct inode *cpfile,
__u64 curr,
@@ -146,6 +153,44 @@
create, nilfs_cpfile_block_init, bhp);
}
+/**
+ * nilfs_cpfile_find_checkpoint_block - find and get a buffer on cpfile
+ * @cpfile: inode of cpfile
+ * @start_cno: start checkpoint number (inclusive)
+ * @end_cno: end checkpoint number (inclusive)
+ * @cnop: place to store the next checkpoint number
+ * @bhp: place to store a pointer to buffer_head struct
+ *
+ * Return Value: On success, it returns 0. On error, the following negative
+ * error code is returned.
+ *
+ * %-ENOMEM - Insufficient memory available.
+ *
+ * %-EIO - I/O error
+ *
+ * %-ENOENT - no block exists in the range.
+ */
+static int nilfs_cpfile_find_checkpoint_block(struct inode *cpfile,
+ __u64 start_cno, __u64 end_cno,
+ __u64 *cnop,
+ struct buffer_head **bhp)
+{
+ unsigned long start, end, blkoff;
+ int ret;
+
+ if (unlikely(start_cno > end_cno))
+ return -ENOENT;
+
+ start = nilfs_cpfile_get_blkoff(cpfile, start_cno);
+ end = nilfs_cpfile_get_blkoff(cpfile, end_cno);
+
+ ret = nilfs_mdt_find_block(cpfile, start, end, &blkoff, bhp);
+ if (!ret)
+ *cnop = (blkoff == start) ? start_cno :
+ nilfs_cpfile_first_checkpoint_in_block(cpfile, blkoff);
+ return ret;
+}
+
static inline int nilfs_cpfile_delete_checkpoint_block(struct inode *cpfile,
__u64 cno)
{
@@ -403,14 +448,15 @@
return -ENOENT; /* checkpoint number 0 is invalid */
down_read(&NILFS_MDT(cpfile)->mi_sem);
- for (n = 0; cno < cur_cno && n < nci; cno += ncps) {
- ncps = nilfs_cpfile_checkpoints_in_block(cpfile, cno, cur_cno);
- ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh);
+ for (n = 0; n < nci; cno += ncps) {
+ ret = nilfs_cpfile_find_checkpoint_block(
+ cpfile, cno, cur_cno - 1, &cno, &bh);
if (ret < 0) {
- if (ret != -ENOENT)
- goto out;
- continue; /* skip hole */
+ if (likely(ret == -ENOENT))
+ break;
+ goto out;
}
+ ncps = nilfs_cpfile_checkpoints_in_block(cpfile, cno, cur_cno);
kaddr = kmap_atomic(bh->b_page);
cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c
index 82f4865..ebf89fd 100644
--- a/fs/nilfs2/direct.c
+++ b/fs/nilfs2/direct.c
@@ -173,6 +173,21 @@
return ret;
}
+static int nilfs_direct_seek_key(const struct nilfs_bmap *direct, __u64 start,
+ __u64 *keyp)
+{
+ __u64 key;
+
+ for (key = start; key <= NILFS_DIRECT_KEY_MAX; key++) {
+ if (nilfs_direct_get_ptr(direct, key) !=
+ NILFS_BMAP_INVALID_PTR) {
+ *keyp = key;
+ return 0;
+ }
+ }
+ return -ENOENT;
+}
+
static int nilfs_direct_last_key(const struct nilfs_bmap *direct, __u64 *keyp)
{
__u64 key, lastkey;
@@ -355,7 +370,9 @@
.bop_assign = nilfs_direct_assign,
.bop_mark = NULL,
+ .bop_seek_key = nilfs_direct_seek_key,
.bop_last_key = nilfs_direct_last_key,
+
.bop_check_insert = nilfs_direct_check_insert,
.bop_check_delete = NULL,
.bop_gather_data = nilfs_direct_gather_data,
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 36f057f..be936df 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -106,7 +106,7 @@
err = nilfs_transaction_begin(inode->i_sb, &ti, 1);
if (unlikely(err))
goto out;
- err = nilfs_bmap_insert(ii->i_bmap, (unsigned long)blkoff,
+ err = nilfs_bmap_insert(ii->i_bmap, blkoff,
(unsigned long)bh_result);
if (unlikely(err != 0)) {
if (err == -EEXIST) {
@@ -441,21 +441,20 @@
void nilfs_set_inode_flags(struct inode *inode)
{
unsigned int flags = NILFS_I(inode)->i_flags;
+ unsigned int new_fl = 0;
- inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
- S_DIRSYNC);
if (flags & FS_SYNC_FL)
- inode->i_flags |= S_SYNC;
+ new_fl |= S_SYNC;
if (flags & FS_APPEND_FL)
- inode->i_flags |= S_APPEND;
+ new_fl |= S_APPEND;
if (flags & FS_IMMUTABLE_FL)
- inode->i_flags |= S_IMMUTABLE;
+ new_fl |= S_IMMUTABLE;
if (flags & FS_NOATIME_FL)
- inode->i_flags |= S_NOATIME;
+ new_fl |= S_NOATIME;
if (flags & FS_DIRSYNC_FL)
- inode->i_flags |= S_DIRSYNC;
- mapping_set_gfp_mask(inode->i_mapping,
- mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
+ new_fl |= S_DIRSYNC;
+ inode_set_flags(inode, new_fl, S_SYNC | S_APPEND | S_IMMUTABLE |
+ S_NOATIME | S_DIRSYNC);
}
int nilfs_read_inode_common(struct inode *inode,
@@ -540,6 +539,8 @@
brelse(bh);
up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
nilfs_set_inode_flags(inode);
+ mapping_set_gfp_mask(inode->i_mapping,
+ mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
return 0;
failed_unmap:
@@ -712,7 +713,7 @@
static void nilfs_truncate_bmap(struct nilfs_inode_info *ii,
unsigned long from)
{
- unsigned long b;
+ __u64 b;
int ret;
if (!test_bit(NILFS_I_BMAP, &ii->i_state))
@@ -727,7 +728,7 @@
if (b < from)
return;
- b -= min_t(unsigned long, NILFS_MAX_TRUNCATE_BLOCKS, b - from);
+ b -= min_t(__u64, NILFS_MAX_TRUNCATE_BLOCKS, b - from);
ret = nilfs_bmap_truncate(ii->i_bmap, b);
nilfs_relax_pressure_in_lock(ii->vfs_inode.i_sb);
if (!ret || (ret == -ENOMEM &&
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 892cf5f..dee34d9 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -261,6 +261,60 @@
}
/**
+ * nilfs_mdt_find_block - find and get a buffer on meta data file.
+ * @inode: inode of the meta data file
+ * @start: start block offset (inclusive)
+ * @end: end block offset (inclusive)
+ * @blkoff: block offset
+ * @out_bh: place to store a pointer to buffer_head struct
+ *
+ * nilfs_mdt_find_block() looks up an existing block in range of
+ * [@start, @end] and stores pointer to a buffer head of the block to
+ * @out_bh, and block offset to @blkoff, respectively. @out_bh and
+ * @blkoff are substituted only when zero is returned.
+ *
+ * Return Value: On success, it returns 0. On error, the following negative
+ * error code is returned.
+ *
+ * %-ENOMEM - Insufficient memory available.
+ *
+ * %-EIO - I/O error
+ *
+ * %-ENOENT - no block was found in the range
+ */
+int nilfs_mdt_find_block(struct inode *inode, unsigned long start,
+ unsigned long end, unsigned long *blkoff,
+ struct buffer_head **out_bh)
+{
+ __u64 next;
+ int ret;
+
+ if (unlikely(start > end))
+ return -ENOENT;
+
+ ret = nilfs_mdt_read_block(inode, start, true, out_bh);
+ if (!ret) {
+ *blkoff = start;
+ goto out;
+ }
+ if (unlikely(ret != -ENOENT || start == ULONG_MAX))
+ goto out;
+
+ ret = nilfs_bmap_seek_key(NILFS_I(inode)->i_bmap, start + 1, &next);
+ if (!ret) {
+ if (next <= end) {
+ ret = nilfs_mdt_read_block(inode, next, true, out_bh);
+ if (!ret)
+ *blkoff = next;
+ } else {
+ ret = -ENOENT;
+ }
+ }
+out:
+ return ret;
+}
+
+/**
* nilfs_mdt_delete_block - make a hole on the meta data file.
* @inode: inode of the meta data file
* @block: block offset
diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h
index ab172e8..fe529a8 100644
--- a/fs/nilfs2/mdt.h
+++ b/fs/nilfs2/mdt.h
@@ -78,6 +78,9 @@
void (*init_block)(struct inode *,
struct buffer_head *, void *),
struct buffer_head **);
+int nilfs_mdt_find_block(struct inode *inode, unsigned long start,
+ unsigned long end, unsigned long *blkoff,
+ struct buffer_head **out_bh);
int nilfs_mdt_delete_block(struct inode *, unsigned long);
int nilfs_mdt_forget_block(struct inode *, unsigned long);
int nilfs_mdt_mark_block_dirty(struct inode *, unsigned long);
@@ -111,7 +114,10 @@
return ((struct the_nilfs *)inode->i_sb->s_fs_info)->ns_cno;
}
-#define nilfs_mdt_bgl_lock(inode, bg) \
- (&NILFS_MDT(inode)->mi_bgl->locks[(bg) & (NR_BG_LOCKS-1)].lock)
+static inline spinlock_t *
+nilfs_mdt_bgl_lock(struct inode *inode, unsigned int block_group)
+{
+ return bgl_lock_ptr(NILFS_MDT(inode)->mi_bgl, block_group);
+}
#endif /* _NILFS_MDT_H */
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 700ecbc..45d650a 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -89,18 +89,16 @@
void nilfs_forget_buffer(struct buffer_head *bh)
{
struct page *page = bh->b_page;
+ const unsigned long clear_bits =
+ (1 << BH_Uptodate | 1 << BH_Dirty | 1 << BH_Mapped |
+ 1 << BH_Async_Write | 1 << BH_NILFS_Volatile |
+ 1 << BH_NILFS_Checked | 1 << BH_NILFS_Redirected);
lock_buffer(bh);
- clear_buffer_nilfs_volatile(bh);
- clear_buffer_nilfs_checked(bh);
- clear_buffer_nilfs_redirected(bh);
- clear_buffer_async_write(bh);
- clear_buffer_dirty(bh);
+ set_mask_bits(&bh->b_state, clear_bits, 0);
if (nilfs_page_buffers_clean(page))
__nilfs_clear_page_dirty(page);
- clear_buffer_uptodate(bh);
- clear_buffer_mapped(bh);
bh->b_blocknr = -1;
ClearPageUptodate(page);
ClearPageMappedToDisk(page);
@@ -421,6 +419,10 @@
if (page_has_buffers(page)) {
struct buffer_head *bh, *head;
+ const unsigned long clear_bits =
+ (1 << BH_Uptodate | 1 << BH_Dirty | 1 << BH_Mapped |
+ 1 << BH_Async_Write | 1 << BH_NILFS_Volatile |
+ 1 << BH_NILFS_Checked | 1 << BH_NILFS_Redirected);
bh = head = page_buffers(page);
do {
@@ -430,13 +432,7 @@
"discard block %llu, size %zu",
(u64)bh->b_blocknr, bh->b_size);
}
- clear_buffer_async_write(bh);
- clear_buffer_dirty(bh);
- clear_buffer_nilfs_volatile(bh);
- clear_buffer_nilfs_checked(bh);
- clear_buffer_nilfs_redirected(bh);
- clear_buffer_uptodate(bh);
- clear_buffer_mapped(bh);
+ set_mask_bits(&bh->b_state, clear_bits, 0);
unlock_buffer(bh);
} while (bh = bh->b_this_page, bh != head);
}
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 0c3f303..c6abbad9 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -24,6 +24,7 @@
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
+#include <linux/bitops.h>
#include <linux/bio.h>
#include <linux/completion.h>
#include <linux/blkdev.h>
@@ -1588,7 +1589,6 @@
list_for_each_entry(bh, &segbuf->sb_segsum_buffers,
b_assoc_buffers) {
- set_buffer_async_write(bh);
if (bh->b_page != bd_page) {
if (bd_page) {
lock_page(bd_page);
@@ -1688,7 +1688,6 @@
list_for_each_entry(segbuf, logs, sb_list) {
list_for_each_entry(bh, &segbuf->sb_segsum_buffers,
b_assoc_buffers) {
- clear_buffer_async_write(bh);
if (bh->b_page != bd_page) {
if (bd_page)
end_page_writeback(bd_page);
@@ -1768,7 +1767,6 @@
b_assoc_buffers) {
set_buffer_uptodate(bh);
clear_buffer_dirty(bh);
- clear_buffer_async_write(bh);
if (bh->b_page != bd_page) {
if (bd_page)
end_page_writeback(bd_page);
@@ -1788,12 +1786,13 @@
*/
list_for_each_entry(bh, &segbuf->sb_payload_buffers,
b_assoc_buffers) {
- set_buffer_uptodate(bh);
- clear_buffer_dirty(bh);
- clear_buffer_async_write(bh);
- clear_buffer_delay(bh);
- clear_buffer_nilfs_volatile(bh);
- clear_buffer_nilfs_redirected(bh);
+ const unsigned long set_bits = (1 << BH_Uptodate);
+ const unsigned long clear_bits =
+ (1 << BH_Dirty | 1 << BH_Async_Write |
+ 1 << BH_Delay | 1 << BH_NILFS_Volatile |
+ 1 << BH_NILFS_Redirected);
+
+ set_mask_bits(&bh->b_state, clear_bits, set_bits);
if (bh == segbuf->sb_super_root) {
if (bh->b_page != bd_page) {
end_page_writeback(bd_page);
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 5bc2a1c..c1725f20 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1020,7 +1020,7 @@
struct dentry *dentry;
int ret;
- if (cno < 0 || cno > nilfs->ns_cno)
+ if (cno > nilfs->ns_cno)
return false;
if (cno >= nilfs_last_cno(nilfs))
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 8e5ad83..af84ad0 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -8,6 +8,7 @@
#include <linux/security.h>
#include <linux/file.h>
#include <linux/seq_file.h>
+#include <linux/fs.h>
#include <linux/proc_fs.h>
@@ -48,17 +49,23 @@
put_files_struct(files);
}
- if (!ret) {
- seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n",
- (long long)file->f_pos, f_flags,
- real_mount(file->f_path.mnt)->mnt_id);
- if (file->f_op->show_fdinfo)
- file->f_op->show_fdinfo(m, file);
- ret = seq_has_overflowed(m);
- fput(file);
- }
+ if (ret)
+ return ret;
- return ret;
+ seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n",
+ (long long)file->f_pos, f_flags,
+ real_mount(file->f_path.mnt)->mnt_id);
+
+ show_fd_locks(m, file, files);
+ if (seq_has_overflowed(m))
+ goto out;
+
+ if (file->f_op->show_fdinfo)
+ file->f_op->show_fdinfo(m, file);
+
+out:
+ fput(file);
+ return 0;
}
static int seq_fdinfo_open(struct inode *inode, struct file *file)
diff --git a/include/asm-generic/seccomp.h b/include/asm-generic/seccomp.h
index 9fa1f65..c9ccafa 100644
--- a/include/asm-generic/seccomp.h
+++ b/include/asm-generic/seccomp.h
@@ -17,7 +17,9 @@
#define __NR_seccomp_read_32 __NR_read
#define __NR_seccomp_write_32 __NR_write
#define __NR_seccomp_exit_32 __NR_exit
+#ifndef __NR_seccomp_sigreturn_32
#define __NR_seccomp_sigreturn_32 __NR_rt_sigreturn
+#endif
#endif /* CONFIG_COMPAT && ! already defined */
#define __NR_seccomp_read __NR_read
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index be4fa5d..ea17cca 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -283,16 +283,16 @@
{
if (small_const_nbits(nbits))
return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
- else
- return __bitmap_empty(src, nbits);
+
+ return find_first_bit(src, nbits) == nbits;
}
static inline int bitmap_full(const unsigned long *src, unsigned int nbits)
{
if (small_const_nbits(nbits))
return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
- else
- return __bitmap_full(src, nbits);
+
+ return find_first_zero_bit(src, nbits) == nbits;
}
static inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 5d858e0..297f5bd 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -218,9 +218,9 @@
/**
* find_last_bit - find the last set bit in a memory region
* @addr: The address to start the search at
- * @size: The maximum size to search
+ * @size: The number of bits to search
*
- * Returns the bit number of the first set bit, or size.
+ * Returns the bit number of the last set bit, or size.
*/
extern unsigned long find_last_bit(const unsigned long *addr,
unsigned long size);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f4d6354..c7496f2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -875,6 +875,7 @@
atomic_long_inc(&f->f_count);
return f;
}
+#define get_file_rcu(x) atomic_long_inc_not_zero(&(x)->f_count)
#define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1)
#define file_count(x) atomic_long_read(&(x)->f_count)
@@ -1046,6 +1047,9 @@
extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
extern int vfs_setlease(struct file *, long, struct file_lock **, void **);
extern int lease_modify(struct file_lock *, int, struct list_head *);
+struct files_struct;
+extern void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files);
#else /* !CONFIG_FILE_LOCKING */
static inline int fcntl_getlk(struct file *file, unsigned int cmd,
struct flock __user *user)
@@ -1182,6 +1186,10 @@
{
return -EINVAL;
}
+
+struct files_struct;
+static inline void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files) {}
#endif /* !CONFIG_FILE_LOCKING */
diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h
index be342b9..63ca8da 100644
--- a/include/linux/kconfig.h
+++ b/include/linux/kconfig.h
@@ -23,14 +23,6 @@
#define ___config_enabled(__ignored, val, ...) val
/*
- * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
- * 0 otherwise.
- *
- */
-#define IS_ENABLED(option) \
- (config_enabled(option) || config_enabled(option##_MODULE))
-
-/*
* IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0
* otherwise. For boolean options, this is equivalent to
* IS_ENABLED(CONFIG_FOO).
@@ -43,4 +35,11 @@
*/
#define IS_MODULE(option) config_enabled(option##_MODULE)
+/*
+ * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
+ * 0 otherwise.
+ */
+#define IS_ENABLED(option) \
+ (IS_BUILTIN(option) || IS_MODULE(option))
+
#endif /* __LINUX_KCONFIG_H */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d6d630d..3a5b48e 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -103,6 +103,18 @@
(((__x) - ((__d) / 2)) / (__d)); \
} \
)
+/*
+ * Same as above but for u64 dividends. divisor must be a 32-bit
+ * number.
+ */
+#define DIV_ROUND_CLOSEST_ULL(x, divisor)( \
+{ \
+ typeof(divisor) __d = divisor; \
+ unsigned long long _tmp = (x) + (__d) / 2; \
+ do_div(_tmp, __d); \
+ _tmp; \
+} \
+)
/*
* Multiplies an integer by a fraction, while avoiding unnecessary
diff --git a/include/linux/mfd/samsung/rtc.h b/include/linux/mfd/samsung/rtc.h
index b6401e7..29c30ac 100644
--- a/include/linux/mfd/samsung/rtc.h
+++ b/include/linux/mfd/samsung/rtc.h
@@ -105,6 +105,8 @@
#define S5M_RTC_UDR_MASK (1 << S5M_RTC_UDR_SHIFT)
#define S2MPS_RTC_WUDR_SHIFT 4
#define S2MPS_RTC_WUDR_MASK (1 << S2MPS_RTC_WUDR_SHIFT)
+#define S2MPS13_RTC_AUDR_SHIFT 1
+#define S2MPS13_RTC_AUDR_MASK (1 << S2MPS13_RTC_AUDR_SHIFT)
#define S2MPS_RTC_RUDR_SHIFT 0
#define S2MPS_RTC_RUDR_MASK (1 << S2MPS_RTC_RUDR_SHIFT)
#define RTC_TCON_SHIFT 1
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 590630e..8d37e26 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -429,7 +429,7 @@
#endif
/* store ref to file /proc/<pid>/exe symlink points to */
- struct file *exe_file;
+ struct file __rcu *exe_file;
#ifdef CONFIG_MMU_NOTIFIER
struct mmu_notifier_mm *mmu_notifier_mm;
#endif
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index b7361f8..795d5fe 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -212,4 +212,7 @@
#endif /* CONFIG_SYSCTL */
+int sysctl_max_threads(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos);
+
#endif /* _LINUX_SYSCTL_H */
diff --git a/include/linux/util_macros.h b/include/linux/util_macros.h
new file mode 100644
index 0000000..d5f4fb6
--- /dev/null
+++ b/include/linux/util_macros.h
@@ -0,0 +1,40 @@
+#ifndef _LINUX_HELPER_MACROS_H_
+#define _LINUX_HELPER_MACROS_H_
+
+#define __find_closest(x, a, as, op) \
+({ \
+ typeof(as) __fc_i, __fc_as = (as) - 1; \
+ typeof(x) __fc_x = (x); \
+ typeof(*a) *__fc_a = (a); \
+ for (__fc_i = 0; __fc_i < __fc_as; __fc_i++) { \
+ if (__fc_x op DIV_ROUND_CLOSEST(__fc_a[__fc_i] + \
+ __fc_a[__fc_i + 1], 2)) \
+ break; \
+ } \
+ (__fc_i); \
+})
+
+/**
+ * find_closest - locate the closest element in a sorted array
+ * @x: The reference value.
+ * @a: The array in which to look for the closest element. Must be sorted
+ * in ascending order.
+ * @as: Size of 'a'.
+ *
+ * Returns the index of the element closest to 'x'.
+ */
+#define find_closest(x, a, as) __find_closest(x, a, as, <=)
+
+/**
+ * find_closest_descending - locate the closest element in a sorted array
+ * @x: The reference value.
+ * @a: The array in which to look for the closest element. Must be sorted
+ * in descending order.
+ * @as: Size of 'a'.
+ *
+ * Similar to find_closest() but 'a' is expected to be sorted in descending
+ * order.
+ */
+#define find_closest_descending(x, a, as) __find_closest(x, a, as, >=)
+
+#endif
diff --git a/include/uapi/asm-generic/errno.h b/include/uapi/asm-generic/errno.h
index 1e1ea6e..88e0914c 100644
--- a/include/uapi/asm-generic/errno.h
+++ b/include/uapi/asm-generic/errno.h
@@ -6,7 +6,16 @@
#define EDEADLK 35 /* Resource deadlock would occur */
#define ENAMETOOLONG 36 /* File name too long */
#define ENOLCK 37 /* No record locks available */
-#define ENOSYS 38 /* Function not implemented */
+
+/*
+ * This error code is special: arch syscall entry code will return
+ * -ENOSYS if users try to call a syscall that doesn't exist. To keep
+ * failures of syscalls that really do exist distinguishable from
+ * failures due to attempts to use a nonexistent syscall, syscall
+ * implementations should refrain from returning -ENOSYS.
+ */
+#define ENOSYS 38 /* Invalid system call number */
+
#define ENOTEMPTY 39 /* Directory not empty */
#define ELOOP 40 /* Too many symbolic links encountered */
#define EWOULDBLOCK EAGAIN /* Operation would block */
diff --git a/init/main.c b/init/main.c
index a7e969d..2115055 100644
--- a/init/main.c
+++ b/init/main.c
@@ -91,7 +91,7 @@
static int kernel_init(void *);
extern void init_IRQ(void);
-extern void fork_init(unsigned long);
+extern void fork_init(void);
extern void radix_tree_init(void);
#ifndef CONFIG_DEBUG_RODATA
static inline void mark_rodata_ro(void) { }
@@ -645,7 +645,7 @@
#endif
thread_info_cache_init();
cred_init();
- fork_init(totalram_pages);
+ fork_init();
proc_caches_init();
buffer_init();
key_init();
diff --git a/kernel/fork.c b/kernel/fork.c
index f2c1e73..03c1eaa 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -74,6 +74,7 @@
#include <linux/uprobes.h>
#include <linux/aio.h>
#include <linux/compiler.h>
+#include <linux/sysctl.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@@ -88,6 +89,16 @@
#include <trace/events/task.h>
/*
+ * Minimum number of threads to boot the kernel
+ */
+#define MIN_THREADS 20
+
+/*
+ * Maximum number of threads
+ */
+#define MAX_THREADS FUTEX_TID_MASK
+
+/*
* Protected counters by write_lock_irq(&tasklist_lock)
*/
unsigned long total_forks; /* Handle normal Linux uptimes. */
@@ -253,7 +264,30 @@
void __init __weak arch_task_cache_init(void) { }
-void __init fork_init(unsigned long mempages)
+/*
+ * set_max_threads
+ */
+static void set_max_threads(unsigned int max_threads_suggested)
+{
+ u64 threads;
+
+ /*
+ * The number of threads shall be limited such that the thread
+ * structures may only consume a small part of the available memory.
+ */
+ if (fls64(totalram_pages) + fls64(PAGE_SIZE) > 64)
+ threads = MAX_THREADS;
+ else
+ threads = div64_u64((u64) totalram_pages * (u64) PAGE_SIZE,
+ (u64) THREAD_SIZE * 8UL);
+
+ if (threads > max_threads_suggested)
+ threads = max_threads_suggested;
+
+ max_threads = clamp_t(u64, threads, MIN_THREADS, MAX_THREADS);
+}
+
+void __init fork_init(void)
{
#ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR
#ifndef ARCH_MIN_TASKALIGN
@@ -268,18 +302,7 @@
/* do the arch specific task caches init */
arch_task_cache_init();
- /*
- * The default maximum number of threads is set to a safe
- * value: the thread structures can take up at most half
- * of memory.
- */
- max_threads = mempages / (8 * THREAD_SIZE / PAGE_SIZE);
-
- /*
- * we need to allow at least 20 threads to boot a system
- */
- if (max_threads < 20)
- max_threads = 20;
+ set_max_threads(MAX_THREADS);
init_task.signal->rlim[RLIMIT_NPROC].rlim_cur = max_threads/2;
init_task.signal->rlim[RLIMIT_NPROC].rlim_max = max_threads/2;
@@ -380,6 +403,9 @@
*/
down_write_nested(&mm->mmap_sem, SINGLE_DEPTH_NESTING);
+ /* No ordering required: file already has been exposed. */
+ RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm));
+
mm->total_vm = oldmm->total_vm;
mm->shared_vm = oldmm->shared_vm;
mm->exec_vm = oldmm->exec_vm;
@@ -505,7 +531,13 @@
pgd_free(mm, mm->pgd);
}
#else
-#define dup_mmap(mm, oldmm) (0)
+static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
+{
+ down_write(&oldmm->mmap_sem);
+ RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm));
+ up_write(&oldmm->mmap_sem);
+ return 0;
+}
#define mm_alloc_pgd(mm) (0)
#define mm_free_pgd(mm)
#endif /* CONFIG_MMU */
@@ -674,34 +706,53 @@
}
EXPORT_SYMBOL_GPL(mmput);
+/**
+ * set_mm_exe_file - change a reference to the mm's executable file
+ *
+ * This changes mm's executable file (shown as symlink /proc/[pid]/exe).
+ *
+ * Main users are mmput() and sys_execve(). Callers prevent concurrent
+ * invocations: in mmput() nobody alive left, in execve task is single
+ * threaded. sys_prctl(PR_SET_MM_MAP/EXE_FILE) also needs to set the
+ * mm->exe_file, but does so without using set_mm_exe_file() in order
+ * to do avoid the need for any locks.
+ */
void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file)
{
+ struct file *old_exe_file;
+
+ /*
+ * It is safe to dereference the exe_file without RCU as
+ * this function is only called if nobody else can access
+ * this mm -- see comment above for justification.
+ */
+ old_exe_file = rcu_dereference_raw(mm->exe_file);
+
if (new_exe_file)
get_file(new_exe_file);
- if (mm->exe_file)
- fput(mm->exe_file);
- mm->exe_file = new_exe_file;
+ rcu_assign_pointer(mm->exe_file, new_exe_file);
+ if (old_exe_file)
+ fput(old_exe_file);
}
+/**
+ * get_mm_exe_file - acquire a reference to the mm's executable file
+ *
+ * Returns %NULL if mm has no associated executable file.
+ * User must release file via fput().
+ */
struct file *get_mm_exe_file(struct mm_struct *mm)
{
struct file *exe_file;
- /* We need mmap_sem to protect against races with removal of exe_file */
- down_read(&mm->mmap_sem);
- exe_file = mm->exe_file;
- if (exe_file)
- get_file(exe_file);
- up_read(&mm->mmap_sem);
+ rcu_read_lock();
+ exe_file = rcu_dereference(mm->exe_file);
+ if (exe_file && !get_file_rcu(exe_file))
+ exe_file = NULL;
+ rcu_read_unlock();
return exe_file;
}
-
-static void dup_mm_exe_file(struct mm_struct *oldmm, struct mm_struct *newmm)
-{
- /* It's safe to write the exe_file pointer without exe_file_lock because
- * this is called during fork when the task is not yet in /proc */
- newmm->exe_file = get_mm_exe_file(oldmm);
-}
+EXPORT_SYMBOL(get_mm_exe_file);
/**
* get_task_mm - acquire a reference to the task's mm
@@ -864,8 +915,6 @@
if (!mm_init(mm, tsk))
goto fail_nomem;
- dup_mm_exe_file(oldmm, mm);
-
err = dup_mmap(mm, oldmm);
if (err)
goto free_pt;
@@ -1403,10 +1452,11 @@
goto bad_fork_cleanup_io;
if (pid != &init_struct_pid) {
- retval = -ENOMEM;
pid = alloc_pid(p->nsproxy->pid_ns_for_children);
- if (!pid)
+ if (IS_ERR(pid)) {
+ retval = PTR_ERR(pid);
goto bad_fork_cleanup_io;
+ }
}
p->set_child_tid = (clone_flags & CLONE_CHILD_SETTID) ? child_tidptr : NULL;
@@ -2000,3 +2050,26 @@
task_unlock(task);
return 0;
}
+
+int sysctl_max_threads(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ struct ctl_table t;
+ int ret;
+ int threads = max_threads;
+ int min = MIN_THREADS;
+ int max = MAX_THREADS;
+
+ t = *table;
+ t.data = &threads;
+ t.extra1 = &min;
+ t.extra2 = &max;
+
+ ret = proc_dointvec_minmax(&t, write, buffer, lenp, ppos);
+ if (ret || !write)
+ return ret;
+
+ set_max_threads(threads);
+
+ return 0;
+}
diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c
index b358a80..a744098 100644
--- a/kernel/gcov/base.c
+++ b/kernel/gcov/base.c
@@ -18,6 +18,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/sched.h>
#include "gcov.h"
static int gcov_events_enabled;
@@ -107,8 +108,10 @@
gcov_events_enabled = 1;
/* Perform event callback for previously registered entries. */
- while ((info = gcov_info_next(info)))
+ while ((info = gcov_info_next(info))) {
gcov_event(GCOV_ADD, info);
+ cond_resched();
+ }
mutex_unlock(&gcov_lock);
}
diff --git a/kernel/pid.c b/kernel/pid.c
index cd36a5e..4fd07d5 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -182,7 +182,7 @@
spin_unlock_irq(&pidmap_lock);
kfree(page);
if (unlikely(!map->page))
- break;
+ return -ENOMEM;
}
if (likely(atomic_read(&map->nr_free))) {
for ( ; ; ) {
@@ -210,7 +210,7 @@
}
pid = mk_pid(pid_ns, map, offset);
}
- return -1;
+ return -EAGAIN;
}
int next_pidmap(struct pid_namespace *pid_ns, unsigned int last)
@@ -301,17 +301,20 @@
int i, nr;
struct pid_namespace *tmp;
struct upid *upid;
+ int retval = -ENOMEM;
pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);
if (!pid)
- goto out;
+ return ERR_PTR(retval);
tmp = ns;
pid->level = ns->level;
for (i = ns->level; i >= 0; i--) {
nr = alloc_pidmap(tmp);
- if (nr < 0)
+ if (IS_ERR_VALUE(nr)) {
+ retval = nr;
goto out_free;
+ }
pid->numbers[i].nr = nr;
pid->numbers[i].ns = tmp;
@@ -339,7 +342,6 @@
}
spin_unlock_irq(&pidmap_lock);
-out:
return pid;
out_unlock:
@@ -351,8 +353,7 @@
free_pidmap(pid->numbers + i);
kmem_cache_free(ns->pid_cachep, pid);
- pid = NULL;
- goto out;
+ return ERR_PTR(retval);
}
void disable_pid_allocation(struct pid_namespace *ns)
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 227fec3..c8e0e05 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -456,8 +456,6 @@
static int ptrace_detach(struct task_struct *child, unsigned int data)
{
- bool dead = false;
-
if (!valid_signal(data))
return -EIO;
@@ -467,18 +465,19 @@
write_lock_irq(&tasklist_lock);
/*
- * This child can be already killed. Make sure de_thread() or
- * our sub-thread doing do_wait() didn't do release_task() yet.
+ * We rely on ptrace_freeze_traced(). It can't be killed and
+ * untraced by another thread, it can't be a zombie.
*/
- if (child->ptrace) {
- child->exit_code = data;
- dead = __ptrace_detach(current, child);
- }
+ WARN_ON(!child->ptrace || child->exit_state);
+ /*
+ * tasklist_lock avoids the race with wait_task_stopped(), see
+ * the comment in ptrace_resume().
+ */
+ child->exit_code = data;
+ __ptrace_detach(current, child);
write_unlock_irq(&tasklist_lock);
proc_ptrace_connector(child, PTRACE_DETACH);
- if (unlikely(dead))
- release_task(child);
return 0;
}
@@ -697,6 +696,8 @@
static int ptrace_resume(struct task_struct *child, long request,
unsigned long data)
{
+ bool need_siglock;
+
if (!valid_signal(data))
return -EIO;
@@ -724,8 +725,26 @@
user_disable_single_step(child);
}
+ /*
+ * Change ->exit_code and ->state under siglock to avoid the race
+ * with wait_task_stopped() in between; a non-zero ->exit_code will
+ * wrongly look like another report from tracee.
+ *
+ * Note that we need siglock even if ->exit_code == data and/or this
+ * status was not reported yet, the new status must not be cleared by
+ * wait_task_stopped() after resume.
+ *
+ * If data == 0 we do not care if wait_task_stopped() reports the old
+ * status and clears the code too; this can't race with the tracee, it
+ * takes siglock after resume.
+ */
+ need_siglock = data && !thread_group_empty(current);
+ if (need_siglock)
+ spin_lock_irq(&child->sighand->siglock);
child->exit_code = data;
wake_up_state(child, __TASK_TRACED);
+ if (need_siglock)
+ spin_unlock_irq(&child->sighand->siglock);
return 0;
}
diff --git a/kernel/signal.c b/kernel/signal.c
index a390499..d51c5dd 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2992,11 +2992,9 @@
* Nor can they impersonate a kill()/tgkill(), which adds source info.
*/
if ((info->si_code >= 0 || info->si_code == SI_TKILL) &&
- (task_pid_vnr(current) != pid)) {
- /* We used to allow any < 0 si_code */
- WARN_ON_ONCE(info->si_code < 0);
+ (task_pid_vnr(current) != pid))
return -EPERM;
- }
+
info->si_signo = sig;
/* POSIX.1b doesn't mention process groups. */
@@ -3041,12 +3039,10 @@
/* Not even root can pretend to send signals from the kernel.
* Nor can they impersonate a kill()/tgkill(), which adds source info.
*/
- if (((info->si_code >= 0 || info->si_code == SI_TKILL)) &&
- (task_pid_vnr(current) != pid)) {
- /* We used to allow any < 0 si_code */
- WARN_ON_ONCE(info->si_code < 0);
+ if ((info->si_code >= 0 || info->si_code == SI_TKILL) &&
+ (task_pid_vnr(current) != pid))
return -EPERM;
- }
+
info->si_signo = sig;
return do_send_specific(tgid, pid, sig, info);
diff --git a/kernel/sys.c b/kernel/sys.c
index 3be3449..a4e372b 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1649,14 +1649,13 @@
return mask;
}
-static int prctl_set_mm_exe_file_locked(struct mm_struct *mm, unsigned int fd)
+static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
{
struct fd exe;
+ struct file *old_exe, *exe_file;
struct inode *inode;
int err;
- VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_sem), mm);
-
exe = fdget(fd);
if (!exe.file)
return -EBADF;
@@ -1680,15 +1679,22 @@
/*
* Forbid mm->exe_file change if old file still mapped.
*/
+ exe_file = get_mm_exe_file(mm);
err = -EBUSY;
- if (mm->exe_file) {
+ if (exe_file) {
struct vm_area_struct *vma;
- for (vma = mm->mmap; vma; vma = vma->vm_next)
- if (vma->vm_file &&
- path_equal(&vma->vm_file->f_path,
- &mm->exe_file->f_path))
- goto exit;
+ down_read(&mm->mmap_sem);
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ if (!vma->vm_file)
+ continue;
+ if (path_equal(&vma->vm_file->f_path,
+ &exe_file->f_path))
+ goto exit_err;
+ }
+
+ up_read(&mm->mmap_sem);
+ fput(exe_file);
}
/*
@@ -1702,10 +1708,18 @@
goto exit;
err = 0;
- set_mm_exe_file(mm, exe.file); /* this grabs a reference to exe.file */
+ /* set the new file, lockless */
+ get_file(exe.file);
+ old_exe = xchg(&mm->exe_file, exe.file);
+ if (old_exe)
+ fput(old_exe);
exit:
fdput(exe);
return err;
+exit_err:
+ up_read(&mm->mmap_sem);
+ fput(exe_file);
+ goto exit;
}
#ifdef CONFIG_CHECKPOINT_RESTORE
@@ -1840,10 +1854,9 @@
user_auxv[AT_VECTOR_SIZE - 1] = AT_NULL;
}
- down_write(&mm->mmap_sem);
if (prctl_map.exe_fd != (u32)-1)
- error = prctl_set_mm_exe_file_locked(mm, prctl_map.exe_fd);
- downgrade_write(&mm->mmap_sem);
+ error = prctl_set_mm_exe_file(mm, prctl_map.exe_fd);
+ down_read(&mm->mmap_sem);
if (error)
goto out;
@@ -1909,12 +1922,8 @@
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
- if (opt == PR_SET_MM_EXE_FILE) {
- down_write(&mm->mmap_sem);
- error = prctl_set_mm_exe_file_locked(mm, (unsigned int)addr);
- up_write(&mm->mmap_sem);
- return error;
- }
+ if (opt == PR_SET_MM_EXE_FILE)
+ return prctl_set_mm_exe_file(mm, (unsigned int)addr);
if (addr >= TASK_SIZE || addr < mmap_min_addr)
return -EINVAL;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 42b7fc2..2082b1a 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -93,11 +93,9 @@
#include <linux/nmi.h>
#endif
-
#if defined(CONFIG_SYSCTL)
/* External variables not in a header file. */
-extern int max_threads;
extern int suid_dumpable;
#ifdef CONFIG_COREDUMP
extern int core_uses_pid;
@@ -710,10 +708,10 @@
#endif
{
.procname = "threads-max",
- .data = &max_threads,
+ .data = NULL,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = sysctl_max_threads,
},
{
.procname = "random",
@@ -1983,7 +1981,15 @@
int write, void *data)
{
if (write) {
- *valp = *negp ? -*lvalp : *lvalp;
+ if (*negp) {
+ if (*lvalp > (unsigned long) INT_MAX + 1)
+ return -EINVAL;
+ *valp = -*lvalp;
+ } else {
+ if (*lvalp > (unsigned long) INT_MAX)
+ return -EINVAL;
+ *valp = *lvalp;
+ }
} else {
int val = *valp;
if (val < 0) {
diff --git a/lib/Kconfig b/lib/Kconfig
index 87da53b..f544022 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -18,9 +18,8 @@
default n
depends on BITREVERSE
help
- This option provides an config for the architecture which have instruction
- can do bitreverse operation, we use the hardware instruction if the architecture
- have this capability.
+ This option enables the use of hardware bit-reversal instructions on
+ architectures which support such operations.
config RATIONAL
bool
diff --git a/lib/Makefile b/lib/Makefile
index 58f74d2..da6116b 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -25,7 +25,7 @@
obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
gcd.o lcm.o list_sort.o uuid.o flex_array.o iov_iter.o clz_ctz.o \
- bsearch.o find_last_bit.o find_next_bit.o llist.o memweight.o kfifo.o \
+ bsearch.o find_bit.o llist.o memweight.o kfifo.o \
percpu-refcount.o percpu_ida.o rhashtable.o reciprocal_div.o
obj-y += string_helpers.o
obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
diff --git a/lib/bitmap.c b/lib/bitmap.c
index d456f4c1..64c0926 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -42,36 +42,6 @@
* for the best explanations of this ordering.
*/
-int __bitmap_empty(const unsigned long *bitmap, unsigned int bits)
-{
- unsigned int k, lim = bits/BITS_PER_LONG;
- for (k = 0; k < lim; ++k)
- if (bitmap[k])
- return 0;
-
- if (bits % BITS_PER_LONG)
- if (bitmap[k] & BITMAP_LAST_WORD_MASK(bits))
- return 0;
-
- return 1;
-}
-EXPORT_SYMBOL(__bitmap_empty);
-
-int __bitmap_full(const unsigned long *bitmap, unsigned int bits)
-{
- unsigned int k, lim = bits/BITS_PER_LONG;
- for (k = 0; k < lim; ++k)
- if (~bitmap[k])
- return 0;
-
- if (bits % BITS_PER_LONG)
- if (~bitmap[k] & BITMAP_LAST_WORD_MASK(bits))
- return 0;
-
- return 1;
-}
-EXPORT_SYMBOL(__bitmap_full);
-
int __bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int bits)
{
diff --git a/lib/cpumask.c b/lib/cpumask.c
index b6513a9..5ab1553 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -37,10 +37,11 @@
int cpumask_next_and(int n, const struct cpumask *src1p,
const struct cpumask *src2p)
{
- while ((n = cpumask_next(n, src1p)) < nr_cpu_ids)
- if (cpumask_test_cpu(n, src2p))
- break;
- return n;
+ struct cpumask tmp;
+
+ if (cpumask_and(&tmp, src1p, src2p))
+ return cpumask_next(n, &tmp);
+ return nr_cpu_ids;
}
EXPORT_SYMBOL(cpumask_next_and);
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 9722bd2..ae4b65e 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -361,7 +361,7 @@
unsigned int range = 0;
while (range <= max_range) {
- entry = __hash_bucket_find(*bucket, &index, containing_match);
+ entry = __hash_bucket_find(*bucket, ref, containing_match);
if (entry)
return entry;
diff --git a/lib/find_bit.c b/lib/find_bit.c
new file mode 100644
index 0000000..18072ea
--- /dev/null
+++ b/lib/find_bit.c
@@ -0,0 +1,193 @@
+/* bit search implementation
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * Copyright (C) 2008 IBM Corporation
+ * 'find_last_bit' is written by Rusty Russell <rusty@rustcorp.com.au>
+ * (Inspired by David Howell's find_next_bit implementation)
+ *
+ * Rewritten by Yury Norov <yury.norov@gmail.com> to decrease
+ * size and improve performance, 2015.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/bitops.h>
+#include <linux/bitmap.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
+
+#if !defined(find_next_bit) || !defined(find_next_zero_bit)
+
+/*
+ * This is a common helper function for find_next_bit and
+ * find_next_zero_bit. The difference is the "invert" argument, which
+ * is XORed with each fetched word before searching it for one bits.
+ */
+static unsigned long _find_next_bit(const unsigned long *addr,
+ unsigned long nbits, unsigned long start, unsigned long invert)
+{
+ unsigned long tmp;
+
+ if (!nbits || start >= nbits)
+ return nbits;
+
+ tmp = addr[start / BITS_PER_LONG] ^ invert;
+
+ /* Handle 1st word. */
+ tmp &= BITMAP_FIRST_WORD_MASK(start);
+ start = round_down(start, BITS_PER_LONG);
+
+ while (!tmp) {
+ start += BITS_PER_LONG;
+ if (start >= nbits)
+ return nbits;
+
+ tmp = addr[start / BITS_PER_LONG] ^ invert;
+ }
+
+ return min(start + __ffs(tmp), nbits);
+}
+#endif
+
+#ifndef find_next_bit
+/*
+ * Find the next set bit in a memory region.
+ */
+unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
+ unsigned long offset)
+{
+ return _find_next_bit(addr, size, offset, 0UL);
+}
+EXPORT_SYMBOL(find_next_bit);
+#endif
+
+#ifndef find_next_zero_bit
+unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
+ unsigned long offset)
+{
+ return _find_next_bit(addr, size, offset, ~0UL);
+}
+EXPORT_SYMBOL(find_next_zero_bit);
+#endif
+
+#ifndef find_first_bit
+/*
+ * Find the first set bit in a memory region.
+ */
+unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
+{
+ unsigned long idx;
+
+ for (idx = 0; idx * BITS_PER_LONG < size; idx++) {
+ if (addr[idx])
+ return min(idx * BITS_PER_LONG + __ffs(addr[idx]), size);
+ }
+
+ return size;
+}
+EXPORT_SYMBOL(find_first_bit);
+#endif
+
+#ifndef find_first_zero_bit
+/*
+ * Find the first cleared bit in a memory region.
+ */
+unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
+{
+ unsigned long idx;
+
+ for (idx = 0; idx * BITS_PER_LONG < size; idx++) {
+ if (addr[idx] != ~0UL)
+ return min(idx * BITS_PER_LONG + ffz(addr[idx]), size);
+ }
+
+ return size;
+}
+EXPORT_SYMBOL(find_first_zero_bit);
+#endif
+
+#ifndef find_last_bit
+unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
+{
+ if (size) {
+ unsigned long val = BITMAP_LAST_WORD_MASK(size);
+ unsigned long idx = (size-1) / BITS_PER_LONG;
+
+ do {
+ val &= addr[idx];
+ if (val)
+ return idx * BITS_PER_LONG + __fls(val);
+
+ val = ~0ul;
+ } while (idx--);
+ }
+ return size;
+}
+EXPORT_SYMBOL(find_last_bit);
+#endif
+
+#ifdef __BIG_ENDIAN
+
+/* include/linux/byteorder does not support "unsigned long" type */
+static inline unsigned long ext2_swab(const unsigned long y)
+{
+#if BITS_PER_LONG == 64
+ return (unsigned long) __swab64((u64) y);
+#elif BITS_PER_LONG == 32
+ return (unsigned long) __swab32((u32) y);
+#else
+#error BITS_PER_LONG not defined
+#endif
+}
+
+#if !defined(find_next_bit_le) || !defined(find_next_zero_bit_le)
+static unsigned long _find_next_bit_le(const unsigned long *addr,
+ unsigned long nbits, unsigned long start, unsigned long invert)
+{
+ unsigned long tmp;
+
+ if (!nbits || start >= nbits)
+ return nbits;
+
+ tmp = addr[start / BITS_PER_LONG] ^ invert;
+
+ /* Handle 1st word. */
+ tmp &= ext2_swab(BITMAP_FIRST_WORD_MASK(start));
+ start = round_down(start, BITS_PER_LONG);
+
+ while (!tmp) {
+ start += BITS_PER_LONG;
+ if (start >= nbits)
+ return nbits;
+
+ tmp = addr[start / BITS_PER_LONG] ^ invert;
+ }
+
+ return min(start + __ffs(ext2_swab(tmp)), nbits);
+}
+#endif
+
+#ifndef find_next_zero_bit_le
+unsigned long find_next_zero_bit_le(const void *addr, unsigned
+ long size, unsigned long offset)
+{
+ return _find_next_bit_le(addr, size, offset, ~0UL);
+}
+EXPORT_SYMBOL(find_next_zero_bit_le);
+#endif
+
+#ifndef find_next_bit_le
+unsigned long find_next_bit_le(const void *addr, unsigned
+ long size, unsigned long offset)
+{
+ return _find_next_bit_le(addr, size, offset, 0UL);
+}
+EXPORT_SYMBOL(find_next_bit_le);
+#endif
+
+#endif /* __BIG_ENDIAN */
diff --git a/lib/find_last_bit.c b/lib/find_last_bit.c
index 91ca09f..3e3be40 100644
--- a/lib/find_last_bit.c
+++ b/lib/find_last_bit.c
@@ -4,6 +4,9 @@
* Written by Rusty Russell <rusty@rustcorp.com.au>
* (Inspired by David Howell's find_next_bit implementation)
*
+ * Rewritten by Yury Norov <yury.norov@gmail.com> to decrease
+ * size and improve performance, 2015.
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
@@ -11,37 +14,26 @@
*/
#include <linux/bitops.h>
+#include <linux/bitmap.h>
#include <linux/export.h>
-#include <asm/types.h>
-#include <asm/byteorder.h>
+#include <linux/kernel.h>
#ifndef find_last_bit
unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
{
- unsigned long words;
- unsigned long tmp;
+ if (size) {
+ unsigned long val = BITMAP_LAST_WORD_MASK(size);
+ unsigned long idx = (size-1) / BITS_PER_LONG;
- /* Start at final word. */
- words = size / BITS_PER_LONG;
+ do {
+ val &= addr[idx];
+ if (val)
+ return idx * BITS_PER_LONG + __fls(val);
- /* Partial final word? */
- if (size & (BITS_PER_LONG-1)) {
- tmp = (addr[words] & (~0UL >> (BITS_PER_LONG
- - (size & (BITS_PER_LONG-1)))));
- if (tmp)
- goto found;
+ val = ~0ul;
+ } while (idx--);
}
-
- while (words) {
- tmp = addr[--words];
- if (tmp) {
-found:
- return words * BITS_PER_LONG + __fls(tmp);
- }
- }
-
- /* Not found */
return size;
}
EXPORT_SYMBOL(find_last_bit);
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c
deleted file mode 100644
index 0cbfc0b..0000000
--- a/lib/find_next_bit.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/* find_next_bit.c: fallback find next bit implementation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/bitops.h>
-#include <linux/export.h>
-#include <asm/types.h>
-#include <asm/byteorder.h>
-
-#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
-
-#ifndef find_next_bit
-/*
- * Find the next set bit in a memory region.
- */
-unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
- unsigned long offset)
-{
- const unsigned long *p = addr + BITOP_WORD(offset);
- unsigned long result = offset & ~(BITS_PER_LONG-1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset %= BITS_PER_LONG;
- if (offset) {
- tmp = *(p++);
- tmp &= (~0UL << offset);
- if (size < BITS_PER_LONG)
- goto found_first;
- if (tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
- while (size & ~(BITS_PER_LONG-1)) {
- if ((tmp = *(p++)))
- goto found_middle;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = *p;
-
-found_first:
- tmp &= (~0UL >> (BITS_PER_LONG - size));
- if (tmp == 0UL) /* Are any bits set? */
- return result + size; /* Nope. */
-found_middle:
- return result + __ffs(tmp);
-}
-EXPORT_SYMBOL(find_next_bit);
-#endif
-
-#ifndef find_next_zero_bit
-/*
- * This implementation of find_{first,next}_zero_bit was stolen from
- * Linus' asm-alpha/bitops.h.
- */
-unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
- unsigned long offset)
-{
- const unsigned long *p = addr + BITOP_WORD(offset);
- unsigned long result = offset & ~(BITS_PER_LONG-1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset %= BITS_PER_LONG;
- if (offset) {
- tmp = *(p++);
- tmp |= ~0UL >> (BITS_PER_LONG - offset);
- if (size < BITS_PER_LONG)
- goto found_first;
- if (~tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
- while (size & ~(BITS_PER_LONG-1)) {
- if (~(tmp = *(p++)))
- goto found_middle;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = *p;
-
-found_first:
- tmp |= ~0UL << size;
- if (tmp == ~0UL) /* Are any bits zero? */
- return result + size; /* Nope. */
-found_middle:
- return result + ffz(tmp);
-}
-EXPORT_SYMBOL(find_next_zero_bit);
-#endif
-
-#ifndef find_first_bit
-/*
- * Find the first set bit in a memory region.
- */
-unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
-{
- const unsigned long *p = addr;
- unsigned long result = 0;
- unsigned long tmp;
-
- while (size & ~(BITS_PER_LONG-1)) {
- if ((tmp = *(p++)))
- goto found;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
-
- tmp = (*p) & (~0UL >> (BITS_PER_LONG - size));
- if (tmp == 0UL) /* Are any bits set? */
- return result + size; /* Nope. */
-found:
- return result + __ffs(tmp);
-}
-EXPORT_SYMBOL(find_first_bit);
-#endif
-
-#ifndef find_first_zero_bit
-/*
- * Find the first cleared bit in a memory region.
- */
-unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
-{
- const unsigned long *p = addr;
- unsigned long result = 0;
- unsigned long tmp;
-
- while (size & ~(BITS_PER_LONG-1)) {
- if (~(tmp = *(p++)))
- goto found;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
-
- tmp = (*p) | (~0UL << size);
- if (tmp == ~0UL) /* Are any bits zero? */
- return result + size; /* Nope. */
-found:
- return result + ffz(tmp);
-}
-EXPORT_SYMBOL(find_first_zero_bit);
-#endif
-
-#ifdef __BIG_ENDIAN
-
-/* include/linux/byteorder does not support "unsigned long" type */
-static inline unsigned long ext2_swabp(const unsigned long * x)
-{
-#if BITS_PER_LONG == 64
- return (unsigned long) __swab64p((u64 *) x);
-#elif BITS_PER_LONG == 32
- return (unsigned long) __swab32p((u32 *) x);
-#else
-#error BITS_PER_LONG not defined
-#endif
-}
-
-/* include/linux/byteorder doesn't support "unsigned long" type */
-static inline unsigned long ext2_swab(const unsigned long y)
-{
-#if BITS_PER_LONG == 64
- return (unsigned long) __swab64((u64) y);
-#elif BITS_PER_LONG == 32
- return (unsigned long) __swab32((u32) y);
-#else
-#error BITS_PER_LONG not defined
-#endif
-}
-
-#ifndef find_next_zero_bit_le
-unsigned long find_next_zero_bit_le(const void *addr, unsigned
- long size, unsigned long offset)
-{
- const unsigned long *p = addr;
- unsigned long result = offset & ~(BITS_PER_LONG - 1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- p += BITOP_WORD(offset);
- size -= result;
- offset &= (BITS_PER_LONG - 1UL);
- if (offset) {
- tmp = ext2_swabp(p++);
- tmp |= (~0UL >> (BITS_PER_LONG - offset));
- if (size < BITS_PER_LONG)
- goto found_first;
- if (~tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
-
- while (size & ~(BITS_PER_LONG - 1)) {
- if (~(tmp = *(p++)))
- goto found_middle_swap;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = ext2_swabp(p);
-found_first:
- tmp |= ~0UL << size;
- if (tmp == ~0UL) /* Are any bits zero? */
- return result + size; /* Nope. Skip ffz */
-found_middle:
- return result + ffz(tmp);
-
-found_middle_swap:
- return result + ffz(ext2_swab(tmp));
-}
-EXPORT_SYMBOL(find_next_zero_bit_le);
-#endif
-
-#ifndef find_next_bit_le
-unsigned long find_next_bit_le(const void *addr, unsigned
- long size, unsigned long offset)
-{
- const unsigned long *p = addr;
- unsigned long result = offset & ~(BITS_PER_LONG - 1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- p += BITOP_WORD(offset);
- size -= result;
- offset &= (BITS_PER_LONG - 1UL);
- if (offset) {
- tmp = ext2_swabp(p++);
- tmp &= (~0UL << offset);
- if (size < BITS_PER_LONG)
- goto found_first;
- if (tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
-
- while (size & ~(BITS_PER_LONG - 1)) {
- tmp = *(p++);
- if (tmp)
- goto found_middle_swap;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = ext2_swabp(p);
-found_first:
- tmp &= (~0UL >> (BITS_PER_LONG - size));
- if (tmp == 0UL) /* Are any bits set? */
- return result + size; /* Nope. */
-found_middle:
- return result + __ffs(tmp);
-
-found_middle_swap:
- return result + __ffs(ext2_swab(tmp));
-}
-EXPORT_SYMBOL(find_next_bit_le);
-#endif
-
-#endif /* __BIG_ENDIAN */
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3a1e084..da39c60 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -33,6 +33,7 @@
#include <asm/page.h> /* for PAGE_SIZE */
#include <asm/sections.h> /* for dereference_function_descriptor() */
+#include <asm/byteorder.h> /* cpu_to_le16 */
#include <linux/string_helpers.h>
#include "kstrtox.h"
@@ -122,142 +123,145 @@
return i;
}
-/* Decimal conversion is by far the most typical, and is used
- * for /proc and /sys data. This directly impacts e.g. top performance
- * with many processes running. We optimize it for speed
- * using ideas described at <http://www.cs.uiowa.edu/~jones/bcd/divide.html>
- * (with permission from the author, Douglas W. Jones).
+/*
+ * Decimal conversion is by far the most typical, and is used for
+ * /proc and /sys data. This directly impacts e.g. top performance
+ * with many processes running. We optimize it for speed by emitting
+ * two characters at a time, using a 200 byte lookup table. This
+ * roughly halves the number of multiplications compared to computing
+ * the digits one at a time. Implementation strongly inspired by the
+ * previous version, which in turn used ideas described at
+ * <http://www.cs.uiowa.edu/~jones/bcd/divide.html> (with permission
+ * from the author, Douglas W. Jones).
+ *
+ * It turns out there is precisely one 26 bit fixed-point
+ * approximation a of 64/100 for which x/100 == (x * (u64)a) >> 32
+ * holds for all x in [0, 10^8-1], namely a = 0x28f5c29. The actual
+ * range happens to be somewhat larger (x <= 1073741898), but that's
+ * irrelevant for our purpose.
+ *
+ * For dividing a number in the range [10^4, 10^6-1] by 100, we still
+ * need a 32x32->64 bit multiply, so we simply use the same constant.
+ *
+ * For dividing a number in the range [100, 10^4-1] by 100, there are
+ * several options. The simplest is (x * 0x147b) >> 19, which is valid
+ * for all x <= 43698.
*/
-#if BITS_PER_LONG != 32 || BITS_PER_LONG_LONG != 64
-/* Formats correctly any integer in [0, 999999999] */
-static noinline_for_stack
-char *put_dec_full9(char *buf, unsigned q)
-{
- unsigned r;
+static const u16 decpair[100] = {
+#define _(x) (__force u16) cpu_to_le16(((x % 10) | ((x / 10) << 8)) + 0x3030)
+ _( 0), _( 1), _( 2), _( 3), _( 4), _( 5), _( 6), _( 7), _( 8), _( 9),
+ _(10), _(11), _(12), _(13), _(14), _(15), _(16), _(17), _(18), _(19),
+ _(20), _(21), _(22), _(23), _(24), _(25), _(26), _(27), _(28), _(29),
+ _(30), _(31), _(32), _(33), _(34), _(35), _(36), _(37), _(38), _(39),
+ _(40), _(41), _(42), _(43), _(44), _(45), _(46), _(47), _(48), _(49),
+ _(50), _(51), _(52), _(53), _(54), _(55), _(56), _(57), _(58), _(59),
+ _(60), _(61), _(62), _(63), _(64), _(65), _(66), _(67), _(68), _(69),
+ _(70), _(71), _(72), _(73), _(74), _(75), _(76), _(77), _(78), _(79),
+ _(80), _(81), _(82), _(83), _(84), _(85), _(86), _(87), _(88), _(89),
+ _(90), _(91), _(92), _(93), _(94), _(95), _(96), _(97), _(98), _(99),
+#undef _
+};
- /*
- * Possible ways to approx. divide by 10
- * (x * 0x1999999a) >> 32 x < 1073741829 (multiply must be 64-bit)
- * (x * 0xcccd) >> 19 x < 81920 (x < 262149 when 64-bit mul)
- * (x * 0x6667) >> 18 x < 43699
- * (x * 0x3334) >> 17 x < 16389
- * (x * 0x199a) >> 16 x < 16389
- * (x * 0x0ccd) >> 15 x < 16389
- * (x * 0x0667) >> 14 x < 2739
- * (x * 0x0334) >> 13 x < 1029
- * (x * 0x019a) >> 12 x < 1029
- * (x * 0x00cd) >> 11 x < 1029 shorter code than * 0x67 (on i386)
- * (x * 0x0067) >> 10 x < 179
- * (x * 0x0034) >> 9 x < 69 same
- * (x * 0x001a) >> 8 x < 69 same
- * (x * 0x000d) >> 7 x < 69 same, shortest code (on i386)
- * (x * 0x0007) >> 6 x < 19
- * See <http://www.cs.uiowa.edu/~jones/bcd/divide.html>
- */
- r = (q * (uint64_t)0x1999999a) >> 32;
- *buf++ = (q - 10 * r) + '0'; /* 1 */
- q = (r * (uint64_t)0x1999999a) >> 32;
- *buf++ = (r - 10 * q) + '0'; /* 2 */
- r = (q * (uint64_t)0x1999999a) >> 32;
- *buf++ = (q - 10 * r) + '0'; /* 3 */
- q = (r * (uint64_t)0x1999999a) >> 32;
- *buf++ = (r - 10 * q) + '0'; /* 4 */
- r = (q * (uint64_t)0x1999999a) >> 32;
- *buf++ = (q - 10 * r) + '0'; /* 5 */
- /* Now value is under 10000, can avoid 64-bit multiply */
- q = (r * 0x199a) >> 16;
- *buf++ = (r - 10 * q) + '0'; /* 6 */
- r = (q * 0xcd) >> 11;
- *buf++ = (q - 10 * r) + '0'; /* 7 */
- q = (r * 0xcd) >> 11;
- *buf++ = (r - 10 * q) + '0'; /* 8 */
- *buf++ = q + '0'; /* 9 */
- return buf;
-}
-#endif
-
-/* Similar to above but do not pad with zeros.
- * Code can be easily arranged to print 9 digits too, but our callers
- * always call put_dec_full9() instead when the number has 9 decimal digits.
- */
+/*
+ * This will print a single '0' even if r == 0, since we would
+ * immediately jump to out_r where two 0s would be written but only
+ * one of them accounted for in buf. This is needed by ip4_string
+ * below. All other callers pass a non-zero value of r.
+*/
static noinline_for_stack
char *put_dec_trunc8(char *buf, unsigned r)
{
unsigned q;
- /* Copy of previous function's body with added early returns */
- while (r >= 10000) {
- q = r + '0';
- r = (r * (uint64_t)0x1999999a) >> 32;
- *buf++ = q - 10*r;
- }
+ /* 1 <= r < 10^8 */
+ if (r < 100)
+ goto out_r;
- q = (r * 0x199a) >> 16; /* r <= 9999 */
- *buf++ = (r - 10 * q) + '0';
- if (q == 0)
- return buf;
- r = (q * 0xcd) >> 11; /* q <= 999 */
- *buf++ = (q - 10 * r) + '0';
- if (r == 0)
- return buf;
- q = (r * 0xcd) >> 11; /* r <= 99 */
- *buf++ = (r - 10 * q) + '0';
- if (q == 0)
- return buf;
- *buf++ = q + '0'; /* q <= 9 */
+ /* 100 <= r < 10^8 */
+ q = (r * (u64)0x28f5c29) >> 32;
+ *((u16 *)buf) = decpair[r - 100*q];
+ buf += 2;
+
+ /* 1 <= q < 10^6 */
+ if (q < 100)
+ goto out_q;
+
+ /* 100 <= q < 10^6 */
+ r = (q * (u64)0x28f5c29) >> 32;
+ *((u16 *)buf) = decpair[q - 100*r];
+ buf += 2;
+
+ /* 1 <= r < 10^4 */
+ if (r < 100)
+ goto out_r;
+
+ /* 100 <= r < 10^4 */
+ q = (r * 0x147b) >> 19;
+ *((u16 *)buf) = decpair[r - 100*q];
+ buf += 2;
+out_q:
+ /* 1 <= q < 100 */
+ r = q;
+out_r:
+ /* 1 <= r < 100 */
+ *((u16 *)buf) = decpair[r];
+ buf += r < 10 ? 1 : 2;
return buf;
}
-/* There are two algorithms to print larger numbers.
- * One is generic: divide by 1000000000 and repeatedly print
- * groups of (up to) 9 digits. It's conceptually simple,
- * but requires a (unsigned long long) / 1000000000 division.
- *
- * Second algorithm splits 64-bit unsigned long long into 16-bit chunks,
- * manipulates them cleverly and generates groups of 4 decimal digits.
- * It so happens that it does NOT require long long division.
- *
- * If long is > 32 bits, division of 64-bit values is relatively easy,
- * and we will use the first algorithm.
- * If long long is > 64 bits (strange architecture with VERY large long long),
- * second algorithm can't be used, and we again use the first one.
- *
- * Else (if long is 32 bits and long long is 64 bits) we use second one.
- */
+#if BITS_PER_LONG == 64 && BITS_PER_LONG_LONG == 64
+static noinline_for_stack
+char *put_dec_full8(char *buf, unsigned r)
+{
+ unsigned q;
-#if BITS_PER_LONG != 32 || BITS_PER_LONG_LONG != 64
+ /* 0 <= r < 10^8 */
+ q = (r * (u64)0x28f5c29) >> 32;
+ *((u16 *)buf) = decpair[r - 100*q];
+ buf += 2;
-/* First algorithm: generic */
+ /* 0 <= q < 10^6 */
+ r = (q * (u64)0x28f5c29) >> 32;
+ *((u16 *)buf) = decpair[q - 100*r];
+ buf += 2;
-static
+ /* 0 <= r < 10^4 */
+ q = (r * 0x147b) >> 19;
+ *((u16 *)buf) = decpair[r - 100*q];
+ buf += 2;
+
+ /* 0 <= q < 100 */
+ *((u16 *)buf) = decpair[q];
+ buf += 2;
+ return buf;
+}
+
+static noinline_for_stack
char *put_dec(char *buf, unsigned long long n)
{
- if (n >= 100*1000*1000) {
- while (n >= 1000*1000*1000)
- buf = put_dec_full9(buf, do_div(n, 1000*1000*1000));
- if (n >= 100*1000*1000)
- return put_dec_full9(buf, n);
- }
+ if (n >= 100*1000*1000)
+ buf = put_dec_full8(buf, do_div(n, 100*1000*1000));
+ /* 1 <= n <= 1.6e11 */
+ if (n >= 100*1000*1000)
+ buf = put_dec_full8(buf, do_div(n, 100*1000*1000));
+ /* 1 <= n < 1e8 */
return put_dec_trunc8(buf, n);
}
-#else
+#elif BITS_PER_LONG == 32 && BITS_PER_LONG_LONG == 64
-/* Second algorithm: valid only for 64-bit long longs */
-
-/* See comment in put_dec_full9 for choice of constants */
-static noinline_for_stack
-void put_dec_full4(char *buf, unsigned q)
+static void
+put_dec_full4(char *buf, unsigned r)
{
- unsigned r;
- r = (q * 0xccd) >> 15;
- buf[0] = (q - 10 * r) + '0';
- q = (r * 0xcd) >> 11;
- buf[1] = (r - 10 * q) + '0';
- r = (q * 0xcd) >> 11;
- buf[2] = (q - 10 * r) + '0';
- buf[3] = r + '0';
+ unsigned q;
+
+ /* 0 <= r < 10^4 */
+ q = (r * 0x147b) >> 19;
+ *((u16 *)buf) = decpair[r - 100*q];
+ buf += 2;
+ /* 0 <= q < 100 */
+ *((u16 *)buf) = decpair[q];
}
/*
@@ -265,9 +269,9 @@
* The approximation x/10000 == (x * 0x346DC5D7) >> 43
* holds for all x < 1,128,869,999. The largest value this
* helper will ever be asked to convert is 1,125,520,955.
- * (d1 in the put_dec code, assuming n is all-ones).
+ * (second call in the put_dec code, assuming n is all-ones).
*/
-static
+static noinline_for_stack
unsigned put_dec_helper4(char *buf, unsigned x)
{
uint32_t q = (x * (uint64_t)0x346DC5D7) >> 43;
@@ -294,6 +298,8 @@
d2 = (h ) & 0xffff;
d3 = (h >> 16); /* implicit "& 0xffff" */
+ /* n = 2^48 d3 + 2^32 d2 + 2^16 d1 + d0
+ = 281_4749_7671_0656 d3 + 42_9496_7296 d2 + 6_5536 d1 + d0 */
q = 656 * d3 + 7296 * d2 + 5536 * d1 + ((uint32_t)n & 0xffff);
q = put_dec_helper4(buf, q);
@@ -323,7 +329,8 @@
*/
int num_to_str(char *buf, int size, unsigned long long num)
{
- char tmp[sizeof(num) * 3];
+ /* put_dec requires 2-byte alignment of the buffer. */
+ char tmp[sizeof(num) * 3] __aligned(2);
int idx, len;
/* put_dec() may work incorrectly for num = 0 (generate "", not "0") */
@@ -384,7 +391,8 @@
char *number(char *buf, char *end, unsigned long long num,
struct printf_spec spec)
{
- char tmp[3 * sizeof(num)];
+ /* put_dec requires 2-byte alignment of the buffer. */
+ char tmp[3 * sizeof(num)] __aligned(2);
char sign;
char locase;
int need_pfx = ((spec.flags & SPECIAL) && spec.base != 10);
@@ -944,7 +952,7 @@
break;
}
for (i = 0; i < 4; i++) {
- char temp[3]; /* hold each IP quad in reverse order */
+ char temp[4] __aligned(2); /* hold each IP quad in reverse order */
int digits = put_dec_trunc8(temp, addr[index]) - temp;
if (leading_zeros) {
if (digits < 3)
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 631619b..3f874d2 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -13,12 +13,16 @@
--param asan-instrumentation-with-call-threshold=$(call_threshold))
ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),)
+ ifneq ($(CONFIG_COMPILE_TEST),y)
$(warning Cannot use CONFIG_KASAN: \
-fsanitize=kernel-address is not supported by compiler)
+ endif
else
ifeq ($(CFLAGS_KASAN),)
- $(warning CONFIG_KASAN: compiler does not support all options.\
- Trying minimal configuration)
+ ifneq ($(CONFIG_COMPILE_TEST),y)
+ $(warning CONFIG_KASAN: compiler does not support all options.\
+ Trying minimal configuration)
+ endif
CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL)
endif
endif
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d124359..89b1df4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -47,6 +47,8 @@
my $minimum_perl_version = 5.10.0;
my $min_conf_desc_length = 4;
my $spelling_file = "$D/spelling.txt";
+my $codespell = 0;
+my $codespellfile = "/usr/local/share/codespell/dictionary.txt";
sub help {
my ($exitcode) = @_;
@@ -88,6 +90,9 @@
file. It's your fault if there's no backup or git
--ignore-perl-version override checking of perl version. expect
runtime errors.
+ --codespell Use the codespell dictionary for spelling/typos
+ (default:/usr/local/share/codespell/dictionary.txt)
+ --codespellfile Use this codespell dictionary
-h, --help, --version display this help and exit
When FILE is - read standard input.
@@ -146,6 +151,8 @@
'ignore-perl-version!' => \$ignore_perl_version,
'debug=s' => \%debug,
'test-only=s' => \$tst_only,
+ 'codespell!' => \$codespell,
+ 'codespellfile=s' => \$codespellfile,
'h|help' => \$help,
'version' => \$help
) or help(1);
@@ -316,6 +323,7 @@
our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x;
+our $BasicType;
our $NonptrType;
our $NonptrTypeMisordered;
our $NonptrTypeWithAttr;
@@ -436,6 +444,14 @@
$mode_perms_search .= $entry->[0];
}
+our $mode_perms_world_writable = qr{
+ S_IWUGO |
+ S_IWOTH |
+ S_IRWXUGO |
+ S_IALLUGO |
+ 0[0-7][0-7][2367]
+}x;
+
our $allowed_asm_includes = qr{(?x:
irq|
memory|
@@ -449,7 +465,6 @@
my %spelling_fix;
if (open(my $spelling, '<', $spelling_file)) {
- my @spelling_list;
while (<$spelling>) {
my $line = $_;
@@ -461,21 +476,50 @@
my ($suspect, $fix) = split(/\|\|/, $line);
- push(@spelling_list, $suspect);
$spelling_fix{$suspect} = $fix;
}
close($spelling);
- $misspellings = join("|", @spelling_list);
} else {
warn "No typos will be found - file '$spelling_file': $!\n";
}
+if ($codespell) {
+ if (open(my $spelling, '<', $codespellfile)) {
+ while (<$spelling>) {
+ my $line = $_;
+
+ $line =~ s/\s*\n?$//g;
+ $line =~ s/^\s*//g;
+
+ next if ($line =~ m/^\s*#/);
+ next if ($line =~ m/^\s*$/);
+ next if ($line =~ m/, disabled/i);
+
+ $line =~ s/,.*$//;
+
+ my ($suspect, $fix) = split(/->/, $line);
+
+ $spelling_fix{$suspect} = $fix;
+ }
+ close($spelling);
+ } else {
+ warn "No codespell typos will be found - file '$codespellfile': $!\n";
+ }
+}
+
+$misspellings = join("|", sort keys %spelling_fix) if keys %spelling_fix;
+
sub build_types {
my $mods = "(?x: \n" . join("|\n ", @modifierList) . "\n)";
my $all = "(?x: \n" . join("|\n ", @typeList) . "\n)";
my $Misordered = "(?x: \n" . join("|\n ", @typeListMisordered) . "\n)";
my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)";
$Modifier = qr{(?:$Attribute|$Sparse|$mods)};
+ $BasicType = qr{
+ (?:$typeOtherOSTypedefs\b)|
+ (?:$typeTypedefs\b)|
+ (?:${all}\b)
+ }x;
$NonptrType = qr{
(?:$Modifier\s+|const\s+)*
(?:
@@ -1646,7 +1690,7 @@
foreach my $old_line (@{$linesRef}) {
my $save_line = 1;
my $line = $old_line; #don't modify the array
- if ($line =~ /^(?:\+\+\+\|\-\-\-)\s+\S+/) { #new filename
+ if ($line =~ /^(?:\+\+\+|\-\-\-)\s+\S+/) { #new filename
$delta_offset = 0;
} elsif ($line =~ /^\@\@ -\d+,\d+ \+\d+,\d+ \@\@/) { #new hunk
$range_last_linenr = $new_linenr;
@@ -1854,6 +1898,7 @@
my $in_header_lines = $file ? 0 : 1;
my $in_commit_log = 0; #Scanning lines before patch
+ my $commit_log_long_line = 0;
my $reported_maintainer_file = 0;
my $non_utf8_charset = 0;
@@ -2189,6 +2234,14 @@
"Remove Gerrit Change-Id's before submitting upstream.\n" . $herecurr);
}
+# Check for line lengths > 75 in commit log, warn once
+ if ($in_commit_log && !$commit_log_long_line &&
+ length($line) > 75) {
+ WARN("COMMIT_LOG_LONG_LINE",
+ "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
+ $commit_log_long_line = 1;
+ }
+
# Check for git id commit length and improperly formed commit descriptions
if ($in_commit_log && $line =~ /\b(c)ommit\s+([0-9a-f]{5,})/i) {
my $init_char = $1;
@@ -2303,8 +2356,9 @@
}
# Check for various typo / spelling mistakes
- if (defined($misspellings) && ($in_commit_log || $line =~ /^\+/)) {
- while ($rawline =~ /(?:^|[^a-z@])($misspellings)(?:$|[^a-z@])/gi) {
+ if (defined($misspellings) &&
+ ($in_commit_log || $line =~ /^(?:\+|Subject:)/i)) {
+ while ($rawline =~ /(?:^|[^a-z@])($misspellings)(?:\b|$|[^a-z@])/gi) {
my $typo = $1;
my $typo_fix = $spelling_fix{lc($typo)};
$typo_fix = ucfirst($typo_fix) if ($typo =~ /^[A-Z]/);
@@ -2459,8 +2513,9 @@
#line length limit
if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
$rawline !~ /^.\s*\*\s*\@$Ident\s/ &&
- !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:|,|\)\s*;)\s*$/ ||
- $line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
+ !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?$String\s*(?:|,|\)\s*;)\s*$/ ||
+ $line =~ /^\+\s*$String\s*(?:\s*|,|\)\s*;)\s*$/ ||
+ $line =~ /^\+\s*#\s*define\s+\w+\s+$String$/) &&
$length > $max_line_length)
{
WARN("LONG_LINE",
@@ -2552,8 +2607,15 @@
}
}
- if ($line =~ /^\+.*(\w+\s*)?\(\s*$Type\s*\)[ \t]+(?!$Assignment|$Arithmetic|[,;:\?\(\{\}\[\<\>]|&&|\|\||\\$)/ &&
- (!defined($1) || $1 !~ /sizeof\s*/)) {
+# check for space after cast like "(int) foo" or "(struct foo) bar"
+# avoid checking a few false positives:
+# "sizeof(<type>)" or "__alignof__(<type>)"
+# function pointer declarations like "(*foo)(int) = bar;"
+# structure definitions like "(struct foo) { 0 };"
+# multiline macros that define functions
+# known attributes or the __attribute__ keyword
+ if ($line =~ /^\+(.*)\(\s*$Type\s*\)([ \t]++)((?![={]|\\$|$Attribute|__attribute__))/ &&
+ (!defined($1) || $1 !~ /\b(?:sizeof|__alignof__)\s*$/)) {
if (CHK("SPACING",
"No space is necessary after a cast\n" . $herecurr) &&
$fix) {
@@ -3146,6 +3208,18 @@
$herecurr);
}
+# check for const <foo> const where <foo> is not a pointer or array type
+ if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) {
+ my $found = $1;
+ if ($sline =~ /\bconst\s+\Q$found\E\s+const\b\s*\*/) {
+ WARN("CONST_CONST",
+ "'const $found const *' should probably be 'const $found * const'\n" . $herecurr);
+ } elsif ($sline !~ /\bconst\s+\Q$found\E\s+const\s+\w+\s*\[/) {
+ WARN("CONST_CONST",
+ "'const $found const' should probably be 'const $found'\n" . $herecurr);
+ }
+ }
+
# check for non-global char *foo[] = {"bar", ...} declarations.
if ($line =~ /^.\s+(?:static\s+|const\s+)?char\s+\*\s*\w+\s*\[\s*\]\s*=\s*\{/) {
WARN("STATIC_CONST_CHAR_ARRAY",
@@ -3153,6 +3227,19 @@
$herecurr);
}
+# check for sizeof(foo)/sizeof(foo[0]) that could be ARRAY_SIZE(foo)
+ if ($line =~ m@\bsizeof\s*\(\s*($Lval)\s*\)@) {
+ my $array = $1;
+ if ($line =~ m@\b(sizeof\s*\(\s*\Q$array\E\s*\)\s*/\s*sizeof\s*\(\s*\Q$array\E\s*\[\s*0\s*\]\s*\))@) {
+ my $array_div = $1;
+ if (WARN("ARRAY_SIZE",
+ "Prefer ARRAY_SIZE($array)\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s/\Q$array_div\E/ARRAY_SIZE($array)/;
+ }
+ }
+ }
+
# check for function declarations without arguments like "int foo()"
if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) {
if (ERROR("FUNCTION_WITHOUT_ARGS",
@@ -3309,6 +3396,14 @@
"Prefer dev_$level(... to dev_printk(KERN_$orig, ...\n" . $herecurr);
}
+# ENOSYS means "bad syscall nr" and nothing else. This will have a small
+# number of false positives, but assembly files are not checked, so at
+# least the arch entry code will not trigger this warning.
+ if ($line =~ /\bENOSYS\b/) {
+ WARN("ENOSYS",
+ "ENOSYS means 'invalid syscall nr' and nothing else\n" . $herecurr);
+ }
+
# function brace can't be on same line, except for #defines of do while,
# or if closed on same line
if (($line=~/$Type\s*$Ident\(.*\).*\s*{/) and
@@ -3565,7 +3660,7 @@
# Ignore operators passed as parameters.
if ($op_type ne 'V' &&
- $ca =~ /\s$/ && $cc =~ /^\s*,/) {
+ $ca =~ /\s$/ && $cc =~ /^\s*[,\)]/) {
# # Ignore comments
# } elsif ($op =~ /^$;+$/) {
@@ -3750,6 +3845,14 @@
$ok = 1;
}
+ # for asm volatile statements
+ # ignore a colon with another
+ # colon immediately before or after
+ if (($op eq ':') &&
+ ($ca =~ /:$/ || $cc =~ /^:/)) {
+ $ok = 1;
+ }
+
# messages are ERROR, but ?: are CHK
if ($ok == 0) {
my $msg_type = \&ERROR;
@@ -3963,12 +4066,12 @@
}
}
-# Return of what appears to be an errno should normally be -'ve
- if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) {
+# Return of what appears to be an errno should normally be negative
+ if ($sline =~ /\breturn(?:\s*\(+\s*|\s+)(E[A-Z]+)(?:\s*\)+\s*|\s*)[;:,]/) {
my $name = $1;
if ($name ne 'EOF' && $name ne 'ERROR') {
WARN("USE_NEGATIVE_ERRNO",
- "return of an errno should typically be -ve (return -$1)\n" . $herecurr);
+ "return of an errno should typically be negative (ie: return -$1)\n" . $herecurr);
}
}
@@ -4178,7 +4281,8 @@
}
}
-#warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line)
+# warn if <asm/foo.h> is #included and <linux/foo.h> is available and includes
+# itself <asm/foo.h> (uses RAW line)
if ($tree && $rawline =~ m{^.\s*\#\s*include\s*\<asm\/(.*)\.h\>}) {
my $file = "$1.h";
my $checkfile = "include/linux/$file";
@@ -4186,12 +4290,15 @@
$realfile ne $checkfile &&
$1 !~ /$allowed_asm_includes/)
{
- if ($realfile =~ m{^arch/}) {
- CHK("ARCH_INCLUDE_LINUX",
- "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
- } else {
- WARN("INCLUDE_LINUX",
- "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ my $asminclude = `grep -Ec "#include\\s+<asm/$file>" $root/$checkfile`;
+ if ($asminclude > 0) {
+ if ($realfile =~ m{^arch/}) {
+ CHK("ARCH_INCLUDE_LINUX",
+ "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ } else {
+ WARN("INCLUDE_LINUX",
+ "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
+ }
}
}
}
@@ -4700,6 +4807,16 @@
}
}
+# check for __read_mostly with const non-pointer (should just be const)
+ if ($line =~ /\b__read_mostly\b/ &&
+ $line =~ /($Type)\s*$Ident/ && $1 !~ /\*\s*$/ && $1 =~ /\bconst\b/) {
+ if (ERROR("CONST_READ_MOSTLY",
+ "Invalid use of __read_mostly with const type\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s/\s+__read_mostly\b//;
+ }
+ }
+
# don't use __constant_<foo> functions outside of include/uapi/
if ($realfile !~ m@^include/uapi/@ &&
$line =~ /(__constant_(?:htons|ntohs|[bl]e(?:16|32|64)_to_cpu|cpu_to_[bl]e(?:16|32|64)))\s*\(/) {
@@ -5261,6 +5378,7 @@
stacktrace_ops|
sysfs_ops|
tty_operations|
+ uart_ops|
usb_mon_operations|
wd_ops}x;
if ($line !~ /\bconst\b/ &&
@@ -5318,8 +5436,8 @@
}
}
- if ($line =~ /debugfs_create_file.*S_IWUGO/ ||
- $line =~ /DEVICE_ATTR.*S_IWUGO/ ) {
+ if ($line =~ /debugfs_create_\w+.*\b$mode_perms_world_writable\b/ ||
+ $line =~ /DEVICE_ATTR.*\b$mode_perms_world_writable\b/) {
WARN("EXPORTED_WORLD_WRITABLE",
"Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
}
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index fc7fd52..bb8e4d0 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -825,6 +825,7 @@
retreive||retrieve
retrive||retrieve
retuned||returned
+reudce||reduce
reuest||request
reuqest||request
reutnred||returned
diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index 2952ba5..b974a69 100644
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -948,15 +948,18 @@
*/
const char *tomoyo_get_exe(void)
{
+ struct file *exe_file;
+ const char *cp;
struct mm_struct *mm = current->mm;
- const char *cp = NULL;
if (!mm)
return NULL;
- down_read(&mm->mmap_sem);
- if (mm->exe_file)
- cp = tomoyo_realpath_from_path(&mm->exe_file->f_path);
- up_read(&mm->mmap_sem);
+ exe_file = get_mm_exe_file(mm);
+ if (!exe_file)
+ return NULL;
+
+ cp = tomoyo_realpath_from_path(&exe_file->f_path);
+ fput(exe_file);
return cp;
}
diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c
index 5a30fdd..e12764d 100644
--- a/sound/soc/codecs/pcm512x.c
+++ b/sound/soc/codecs/pcm512x.c
@@ -18,6 +18,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/clk.h>
+#include <linux/kernel.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@@ -31,8 +32,6 @@
#define DIV_ROUND_DOWN_ULL(ll, d) \
({ unsigned long long _tmp = (ll); do_div(_tmp, d); _tmp; })
-#define DIV_ROUND_CLOSEST_ULL(ll, d) \
- ({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; })
#define PCM512x_NUM_SUPPLIES 3
static const char * const pcm512x_supply_names[PCM512x_NUM_SUPPLIES] = {
