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- /*
- * 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>
- #ifdef CONFIG_TRACE_IRQFLAGS
- /* put return address in eax (arg1) */
- .macro thunk_ra name,func
- .globl \name
- \name:
- pushl %eax
- pushl %ecx
- pushl %edx
- /* Place EIP in the arg1 */
- movl 3*4(%esp), %eax
- call \func
- popl %edx
- popl %ecx
- popl %eax
- ret
- _ASM_NOKPROBE(\name)
- .endm
- thunk_ra trace_hardirqs_on_thunk,trace_hardirqs_on_caller
- thunk_ra trace_hardirqs_off_thunk,trace_hardirqs_off_caller
- #endif
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