tree 71f265bbc27f603732e3791bb24896e450489083
parent 970987beb9c99ca806edc464518d411cc399fb4d
author Frederic Weisbecker <fweisbec@gmail.com> 1228430855 +0100
committer Ingo Molnar <mingo@elte.hu> 1228484863 +0100

tracing/ftrace: don't insert TRACE_PRINT during selftests

Impact: fix tracer selfstests false results

After setting a ftrace_printk somewhere in th kernel, I saw the
Function tracer selftest failing.

When a selftest occurs, the ring buffer is lurked to see if
some entries were inserted. But concurrent insertion such as
ftrace_printk could occured at the same time and could give
false positive or negative results.

This patch prevent prevent from TRACE_PRINT entries insertion
during selftests.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>