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ftrace: give time for wakeup test to run 

It is possible that the testing thread in the ftrace wakeup test does not
run before we stop the trace. This will cause the trace to fail since nothing
will be in the buffers.

This patch adds a small wait in the wakeup test to allow for the woken task
to run and be traced.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Steven Rostedt 2008-09-29 23:02:37 -04:00 committed by Ingo Molnar
parent 7c572ac0cf
commit 5aa60c6073
1 changed files with 3 additions and 0 deletions
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3
kernel/trace/trace_selftest.c
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@ -498,6 +498,9 @@ trace_selftest_startup_wakeup(struct tracer *trace, struct trace_array *tr)
wake_up_process(p);
/* give a little time to let the thread wake up */
msleep(100);
/* stop the tracing. */
tr->ctrl = 0;
trace->ctrl_update(tr);