| /* | |
| * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash) | |
| * Copyright 2008 by Steven Rostedt, Red Hat, Inc | |
| * (inspired by Andi Kleen's thunk_64.S) | |
| * Subject to the GNU public license, v.2. No warranty of any kind. | |
| */ | |
| #include <linux/linkage.h> | |
| #include <asm/asm.h> | |
| #include <asm/export.h> | |
| /* put return address in eax (arg1) */ | |
| .macro THUNK name, func, put_ret_addr_in_eax=0 | |
| .globl \name | |
| \name: | |
| pushl %eax | |
| pushl %ecx | |
| pushl %edx | |
| .if \put_ret_addr_in_eax | |
| /* Place EIP in the arg1 */ | |
| movl 3*4(%esp), %eax | |
| .endif | |
| call \func | |
| popl %edx | |
| popl %ecx | |
| popl %eax | |
| ret | |
| _ASM_NOKPROBE(\name) | |
| .endm | |
| #ifdef CONFIG_TRACE_IRQFLAGS | |
| THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1 | |
| THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1 | |
| #endif | |
| #ifdef CONFIG_PREEMPT | |
| THUNK ___preempt_schedule, preempt_schedule | |
| THUNK ___preempt_schedule_notrace, preempt_schedule_notrace | |
| EXPORT_SYMBOL(___preempt_schedule) | |
| EXPORT_SYMBOL(___preempt_schedule_notrace) | |
| #endif | |