commit 5aa60c6073456812251caf9177cb921b2de68f77
author Steven Rostedt <rostedt@goodmis.org> Mon Sep 29 23:02:37 2008 -0400
committer Ingo Molnar <mingo@elte.hu> Tue Oct 14 10:38:53 2008 +0200
tree 8eb56cc1db2101f31b0215134503496d8a29f639
parent 7c572ac0cf5e8cd8e17f084bc6c253296cc42279

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>

kernel/trace/trace_selftest.c

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 @@
 
 	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);