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authorSteven Rostedt <rostedt@goodmis.org>2008-09-29 23:02:37 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-14 10:38:53 +0200
commit5aa60c6073456812251caf9177cb921b2de68f77 (patch)
tree8eb56cc1db2101f31b0215134503496d8a29f639
parent7c572ac0cf5e8cd8e17f084bc6c253296cc42279 (diff)
downloadop-kernel-dev-5aa60c6073456812251caf9177cb921b2de68f77.zip
op-kernel-dev-5aa60c6073456812251caf9177cb921b2de68f77.tar.gz
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>
-rw-r--r--kernel/trace/trace_selftest.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index 82db910..5ebd4b1 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -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);
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