perf_counter, x86: generic use of cpuc->active

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cpuc->active will now be used to indicate an enabled counter which
implies also valid pointers of cpuc->counters[]. In contrast,
cpuc->used only locks the counter, but it can be still uninitialized.

[ Impact: refactor and generalize code ]

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1241002046-8832-20-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Robert Richter 2009-04-29 12:47:16 +02:00 • committed by Ingo Molnar

parent 9390496693

commit 095342389e

1 changed files with 9 additions and 11 deletions

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arch/x86/kernel/cpu/perf_counter.c

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