arm64: perf: Expose some Armv9 common events under sysfs

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Armv9[1] has introduced some common architectural events (0x400C-0x400F)
and common microarchitectural events (0x4010-0x401B), which can be detected
by PMCEID0_EL0 from bit44 to bit59, so expose these common events under
sysfs.

[1] https://developer.arm.com/documentation/ddi0608/ba

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20220303085419.64085-1-zhangshaokun@hisilicon.com
Signed-off-by: Will Deacon <will@kernel.org>

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Shaokun Zhang 2022-03-03 16:54:19 +08:00 • committed by Will Deacon

parent 68fa55f0e0

commit 83f83cc0c1

2 changed files with 24 additions and 0 deletions

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14

arch/arm64/include/asm/perf_event.h

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10

arch/arm64/kernel/perf_event.c

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