perf/x86/intel: Clean up checkpoint-interrupt bits

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Clean up the weird CP interrupt exception code by keeping a CP mask.

Andi suggested this implementation but weirdly didn't actually
implement it himself, do so now because it removes the conditional in
the interrupt handler and avoids the assumption its only on cnt2.

Suggested-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-dvb4q0rydkfp00kqat4p5bah@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Peter Zijlstra 2013-09-12 12:53:44 +02:00 • committed by Ingo Molnar

parent 4b2c4f1f1b

commit 2b9e344df3

2 changed files with 18 additions and 9 deletions

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5

arch/x86/kernel/cpu/perf_event.h

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22

arch/x86/kernel/cpu/perf_event_intel.c

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