tracing: use nowakeup version of commit for function event trace tests
authorSteven Rostedt <srostedt@redhat.com>
Mon, 20 Apr 2009 22:16:44 +0000 (18:16 -0400)
committerSteven Rostedt <rostedt@goodmis.org>
Mon, 20 Apr 2009 22:16:44 +0000 (18:16 -0400)
commitcb4764a6dbffd9bb3cf759421ae82384071a933d
tree36f28716865fdac826848f23160d7a25e332f8f5
parentaa18efb2a2f07e1cf062039848e9d369bb358724
tracing: use nowakeup version of commit for function event trace tests

The startup tests for the event tracer also runs with the function
tracer enabled. The "wakeup" version of the trace commit was used
which can grab spinlocks. If a task was preempted by an NMI
that called a function being traced, it could deadlock due to the
function tracer trying to grab the same lock.

Thanks to Frederic Weisbecker for pointing out where the bug was.

Reported-by: Ingo Molnar <mingo@elte.hu>
Reported-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/trace_events.c