From: Li Zefan <lizf@cn.fujitsu.com>
Date: Mon, 24 Aug 2009 04:19:47 +0000 (+0800)
Subject: tracing/profile: fix profile_disable vs module_unload
X-Git-Tag: v2.6.32-rc1~654^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=558e6547e4b8a2b13608a24a9d3679802f91c4c7;p=pandora-kernel.git

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>
---

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