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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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kernel/trace/trace.c
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@@ -3097,7 +3097,7 @@ void ftrace_dump(void)
dump_ran = 1;
/* No turning back! */
ftrace_kill_atomic();
ftrace_kill();
for_each_tracing_cpu(cpu) {
atomic_inc(&global_trace.data[cpu]->disabled);