arm64/perf: Filter common events based on PMCEIDn_EL0

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The complete common architectural and micro-architectural
event number structure is filtered based on PMCEIDn_EL0 and
exposed to /sys using is_visibile function pointer in events
attribute_group.
To filter the events in is_visible function, pmceid based bitmap
is stored in arm_pmu structure and the id field from
perf_pmu_events_attr is used to check against the bitmap.

The function which derives event bitmap from PMCEIDn_EL0 is
executed in the cpus, which has the pmu being initialized,
for heterogeneous pmu support.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ashok Kumar <ashoks@broadcom.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Ashok Kumar 2016-04-21 05:58:44 -07:00 • committed by Will Deacon

parent bf2d4782e7

commit 4b1a9e6934

2 changed files with 57 additions and 15 deletions

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70

arch/arm64/kernel/perf_event.c

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2

include/linux/perf/arm_pmu.h

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