perf/x86: Fix cmpxchg() usage in amd_put_event_constraints()
authorRobert Richter <robert.richter@amd.com>
Thu, 5 Apr 2012 16:24:42 +0000 (18:24 +0200)
committerIngo Molnar <mingo@kernel.org>
Thu, 26 Apr 2012 11:52:51 +0000 (13:52 +0200)
commit5f09fc688936705b2020ca247df39ee27283668a
tree51897b3ca3df851937d4294d65b7c61faff8ec1b
parent10c250234c98928d1e15c4cea1c44b9a25354ccf
perf/x86: Fix cmpxchg() usage in amd_put_event_constraints()

Now the return value of cmpxchg() is used to match an event. The
change removes the duplicate event comparison and traverses the list
until an event was removed. This also fixes the following warning:

 arch/x86/kernel/cpu/perf_event_amd.c:170: warning: value computed is not used

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1333643084-26776-3-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/cpu/perf_event_amd.c