leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

perf_events, x86: Fix event constraint masks

Browse Source 
Since constraints are specified on the event number, not number
and unit mask shorten the constraint masks so that we'll
actually match something.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <20100127221121.967610372@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2010-01-27 23:07:46 +01:00 committed by Ingo Molnar
parent 2e8418736d
commit ed8777fc13
2 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/perf_event.h
View File

@ -49,7 +49,7 @@
INTEL_ARCH_INV_MASK| \
INTEL_ARCH_EDGE_MASK|\
INTEL_ARCH_UNIT_MASK|\
INTEL_ARCH_EVENT_MASK)
INTEL_ARCH_EVTSEL_MASK)
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL 0x3c
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK (0x00 << 8)

13
arch/x86/kernel/cpu/perf_event.c
View File

@ -100,12 +100,17 @@ struct cpu_hw_events {
.weight = HWEIGHT64((u64)(n)), \
}
#define INTEL_EVENT_CONSTRAINT(c, n) EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
#define FIXED_EVENT_CONSTRAINT(c, n) EVENT_CONSTRAINT(c, n, INTEL_ARCH_FIXED_MASK)
#define INTEL_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVTSEL_MASK)
#define EVENT_CONSTRAINT_END EVENT_CONSTRAINT(0, 0, 0)
#define FIXED_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, INTEL_ARCH_FIXED_MASK)
#define for_each_event_constraint(e, c) for ((e) = (c); (e)->cmask; (e)++)
#define EVENT_CONSTRAINT_END \
EVENT_CONSTRAINT(0, 0, 0)
#define for_each_event_constraint(e, c) \
for ((e) = (c); (e)->cmask; (e)++)
/*
* struct x86_pmu - generic x86 pmu