perf_counter/x86: Always use NMI for performance-monitoring interrupt

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Always use NMI for performance-monitoring interrupt as there could be
racy situations if we switch between irq and nmi mode frequently.

Signed-off-by: Yong Wang <yong.y.wang@intel.com>
LKML-Reference: <20090529052835.GA13657@ywang-moblin2.bj.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Yong Wang 2009-05-29 13:28:35 +08:00 • committed by Ingo Molnar

parent da417a7537

commit c323d95fa4

3 changed files with 8 additions and 17 deletions

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4

arch/x86/include/asm/perf_counter.h

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2

arch/x86/kernel/apic/apic.c

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19

arch/x86/kernel/cpu/perf_counter.c

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