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ftrace: fix kexec

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disable the tracer while kexec pulls the rug from under the old
kernel.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar
2008-05-12 21:20:43 +02:00
committed by Thomas Gleixner
parent 4c11d7aed3
commit f43fdad862
3 changed files with 15 additions and 0 deletions
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7
include/linux/ftrace.h
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@@ -68,6 +68,13 @@ extern void ftrace_call(void);
extern void mcount_call(void);
#endif
static inline void tracer_disable(void)
{
#ifdef CONFIG_FTRACE
ftrace_enabled = 0;
#endif
}
#ifdef CONFIG_FRAME_POINTER
/* TODO: need to fix this for ARM */
# define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))