perf_events, x86: Fixup fixed counter constraints

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Patch 1da53e0230 ("perf_events, x86: Improve x86 event scheduling")
lost us one of the fixed purpose counters and then ed8777fc13
("perf_events, x86: Fix event constraint masks") broke it even
further.

Widen the fixed event mask to event+umask and specify the full config
for each of the 3 fixed purpose counters. Then let the init code fill
out the placement for the GP regs based on the cpuid info.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Peter Zijlstra 2010-02-01 15:36:30 +01:00 • committed by Ingo Molnar

parent 320ebf09cb

commit b622d644c7

3 changed files with 40 additions and 18 deletions

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2

arch/x86/include/asm/perf_event.h

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25

arch/x86/kernel/cpu/perf_event.c

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31

arch/x86/kernel/cpu/perf_event_intel.c

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