[PATCH] kprobes: fix build breakage
The following patch (against 2.6.15-rc5-mm3) fixes a kprobes build break
due to changes introduced in the kprobe locking in 2.6.15-rc5-mm3. In
addition, the patch reverts back the open-coding of kprobe_mutex.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 93444e3..27b0c40 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -80,11 +80,11 @@
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
-void __kprobes arch_remove_kprobe(struct kprobe *p, struct semaphore *s)
+void __kprobes arch_remove_kprobe(struct kprobe *p)
{
- down(s);
+ down(&kprobe_mutex);
free_insn_slot(p->ainsn.insn);
- up(s);
+ up(&kprobe_mutex);
}
static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c
index 61a6a93..b7dc1f8 100644
--- a/arch/x86_64/kernel/kprobes.c
+++ b/arch/x86_64/kernel/kprobes.c
@@ -220,11 +220,11 @@
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
-void __kprobes arch_remove_kprobe(struct kprobe *p, struct semaphore *s)
+void __kprobes arch_remove_kprobe(struct kprobe *p)
{
- down(s);
+ down(&kprobe_mutex);
free_insn_slot(p->ainsn.insn);
- up(s);
+ up(&kprobe_mutex);
}
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
diff --git a/include/asm-i386/kprobes.h b/include/asm-i386/kprobes.h
index dc55926..27cac05 100644
--- a/include/asm-i386/kprobes.h
+++ b/include/asm-i386/kprobes.h
@@ -40,7 +40,7 @@
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define ARCH_SUPPORTS_KRETPROBES
-#define arch_remove_kprobe(p, s) do { } while(0)
+#define arch_remove_kprobe(p) do {} while (0)
void kretprobe_trampoline(void);
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 698508f..a74b681 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -89,7 +89,7 @@
#define IP_RELATIVE_PREDICT_OPCODE (7)
#define LONG_BRANCH_OPCODE (0xC)
#define LONG_CALL_OPCODE (0xD)
-#define arch_remove_kprobe(p, s) do { } while(0)
+#define arch_remove_kprobe(p) do {} while (0)
typedef struct kprobe_opcode {
bundle_t bundle;
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index 89dee13..f466bc8 100644
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -33,6 +33,7 @@
#define __ARCH_WANT_KPROBES_INSN_SLOT
struct pt_regs;
+struct kprobe;
typedef unsigned int kprobe_opcode_t;
#define BREAKPOINT_INSTRUCTION 0x7fe00008 /* trap */
@@ -50,7 +51,7 @@
#define ARCH_SUPPORTS_KRETPROBES
void kretprobe_trampoline(void);
-extern void arch_remove_kprobe(struct kprobe *p, struct semaphore *s);
+extern void arch_remove_kprobe(struct kprobe *p);
/* Architecture specific copy of original instruction */
struct arch_specific_insn {
diff --git a/include/asm-sparc64/kprobes.h b/include/asm-sparc64/kprobes.h
index 27fbdcb..e4efe65 100644
--- a/include/asm-sparc64/kprobes.h
+++ b/include/asm-sparc64/kprobes.h
@@ -12,7 +12,7 @@
#define MAX_INSN_SIZE 2
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
-#define arch_remove_kprobe(p, s) do { } while(0)
+#define arch_remove_kprobe(p) do {} while (0)
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
diff --git a/include/asm-x86_64/kprobes.h b/include/asm-x86_64/kprobes.h
index 3a19ad1..98a1e95d 100644
--- a/include/asm-x86_64/kprobes.h
+++ b/include/asm-x86_64/kprobes.h
@@ -30,6 +30,7 @@
#define __ARCH_WANT_KPROBES_INSN_SLOT
struct pt_regs;
+struct kprobe;
typedef u8 kprobe_opcode_t;
#define BREAKPOINT_INSTRUCTION 0xcc
@@ -44,6 +45,7 @@
#define ARCH_SUPPORTS_KRETPROBES
void kretprobe_trampoline(void);
+extern void arch_remove_kprobe(struct kprobe *p);
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
@@ -78,7 +80,6 @@
local_irq_enable();
}
-extern void arch_remove_kprobe(struct kprobe *p, struct semaphore *s);
extern int post_kprobe_handler(struct pt_regs *regs);
extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
extern int kprobe_handler(struct pt_regs *regs);
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 59bf240..10005bc 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -149,6 +149,7 @@
};
extern spinlock_t kretprobe_lock;
+extern struct semaphore kprobe_mutex;
extern int arch_prepare_kprobe(struct kprobe *p);
extern void arch_arm_kprobe(struct kprobe *p);
extern void arch_disarm_kprobe(struct kprobe *p);
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 19c42cb..f24cbab 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -48,7 +48,7 @@
static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE];
static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE];
-static DECLARE_MUTEX(kprobe_mutex); /* Protects kprobe_table */
+DECLARE_MUTEX(kprobe_mutex); /* Protects kprobe_table */
DEFINE_SPINLOCK(kretprobe_lock); /* Protects kretprobe_inst_table */
static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL;
@@ -532,7 +532,7 @@
list_del_rcu(&p->list);
kfree(old_p);
}
- arch_remove_kprobe(p, &kprobe_mutex);
+ arch_remove_kprobe(p);
}
}
