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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-11-20 20:36:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-21 11:01:07 +0100 |
| commit | 35edc2a5095efb189e60dc32bbb9d2663aec6d24 (patch) | |
| tree | 3296a0dc54c4eb9d9ae5e0715d7521ecbb6d6f7e /arch/arm/include/asm/perf_event.h | |
| parent | 9a0f05cb36888550d1509d60aa55788615abea44 (diff) | |
| download | blackbird-op-linux-35edc2a5095efb189e60dc32bbb9d2663aec6d24.tar.gz blackbird-op-linux-35edc2a5095efb189e60dc32bbb9d2663aec6d24.zip | |
perf, arch: Rework perf_event_index()
Put the logic to compute the event index into a per pmu method. This
is required because the x86 rules are weird and wonderful and don't
match the capabilities of the current scheme.
AFAIK only powerpc actually has a usable userspace read of the PMCs
but I'm not at all sure anybody actually used that.
ARM is restored to the default since it currently does not support
userspace access at all. And all software events are provided with a
method that reports their index as 0 (disabled).
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Michael Cree <mcree@orcon.net.nz>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Eric B Munson <emunson@mgebm.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Arun Sharma <asharma@fb.com>
Link: http://lkml.kernel.org/n/tip-dfydxodki16lylkt3gl2j7cw@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/include/asm/perf_event.h')
| -rw-r--r-- | arch/arm/include/asm/perf_event.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h index 0f8e3827a89b..08f94d8fc04c 100644 --- a/arch/arm/include/asm/perf_event.h +++ b/arch/arm/include/asm/perf_event.h @@ -12,10 +12,6 @@ #ifndef __ARM_PERF_EVENT_H__ #define __ARM_PERF_EVENT_H__ -/* ARM performance counters start from 1 (in the cp15 accesses) so use the - * same indexes here for consistency. */ -#define PERF_EVENT_INDEX_OFFSET 1 - /* ARM perf PMU IDs for use by internal perf clients. */ enum arm_perf_pmu_ids { ARM_PERF_PMU_ID_XSCALE1 = 0, |
