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(parent: 68d2cf2) | patch
perf, x86: Use ALTERNATIVE() to check for X86_FEATURE_PERFCTR_CORE
authorRobert Richter <robert.richter@amd.com>
Sat, 16 Apr 2011 00:27:55 +0000 (02:27 +0200)
committerIngo Molnar <mingo@elte.hu>
Tue, 19 Apr 2011 08:08:12 +0000 (10:08 +0200)
commitc8e5910edf8bbe2e5c6c35a4ef2a578cc7893b25
treefa9b4676c4cd01577653941216301cccfb5b52a3tree | snapshot
parent68d2cf25d39324c54b5e42de7915c623a0917abecommit | diff
perf, x86: Use ALTERNATIVE() to check for X86_FEATURE_PERFCTR_CORE

Using ALTERNATIVE() when checking for X86_FEATURE_PERFCTR_CORE avoids
an extra pointer chase and data cache hit.

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/1302913676-14352-4-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/cpu/perf_event.c diff | blob | history
Domain: System / Uncategorized;