tree aa7eeeee57fbf93d2ff3811a362ffef19be17c29
parent 4818d80942b7c0021d213b7c5f1a14a832820a01
author Li Zefan <lizf@cn.fujitsu.com> 1251087587 +0800
committer Steven Rostedt <rostedt@goodmis.org> 1252808918 -0400

tracing/profile: fix profile_disable vs module_unload

If the correspoding module is unloaded before ftrace_profile_disable()
is called, event->profile_disable() won't be called, which can
cause oops:

  # insmod trace-events-sample.ko
  # perf record -f -a -e sample:foo_bar sleep 3 &
  # sleep 1
  # rmmod trace_events_sample
  # insmod trace-events-sample.ko
  OOPS!

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A9214E3.2070807@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>