ftrace: soft tracing stop and start

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Impact: add way to quickly start stop tracing from the kernel

This patch adds a soft stop and start to the trace. This simply
disables function tracing via the ftrace_disabled flag, and
disables the trace buffers to prevent recording. The tracing
code may still be executed, but the trace will not be recorded.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Steven Rostedt 2008-11-05 16:05:44 -05:00 • committed by Ingo Molnar

parent 60a7ecf426

commit 0f04870148

2 changed files with 84 additions and 2 deletions

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5

include/linux/ftrace.h

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81

kernel/trace/trace.c

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