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ftrace: only have ftrace_kill atomic

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When an anomaly is detected, we need a way to completely disable
ftrace. Right now we have two functions: ftrace_kill and ftrace_kill_atomic.
The ftrace_kill tries to do it in a "nice" way by converting everything
back to a nop.

The "nice" way is dangerous itself, so this patch removes it and only
has the "atomic" version, which is all that is needed.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Steven Rostedt
2008-10-23 09:33:02 -04:00
committed by Ingo Molnar
parent ab9a0918cb
commit 81adbdc029
3 changed files with 4 additions and 43 deletions
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3
include/linux/ftrace.h
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@@ -40,7 +40,7 @@ extern void ftrace_stub(unsigned long a0, unsigned long a1);
# define register_ftrace_function(ops) do { } while (0)
# define unregister_ftrace_function(ops) do { } while (0)
# define clear_ftrace_function(ops) do { } while (0)
static inline void ftrace_kill_atomic(void) { }
static inline void ftrace_kill(void) { }
#endif /* CONFIG_FUNCTION_TRACER */
#ifdef CONFIG_DYNAMIC_FTRACE
@@ -117,7 +117,6 @@ static inline void ftrace_release(void *start, unsigned long size) { }
/* totally disable ftrace - can not re-enable after this */
void ftrace_kill(void);
void ftrace_kill_atomic(void);
static inline void tracer_disable(void)
{