perf: arm_pmu_acpi: Get rid of the edge-triggered interrupt oddity

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The ACPI spec bizarrely indicates that the PMU interrupt can be
edge-triggered, which contradicts the very basics of the PMU
architecture (SW is required to clear the interrupt condition for
the level to drop).

Remove the code parsing this flag and always flag the interrupt
as level triggered, no matter what firmware says.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Marc Zyngier 2026-07-25 17:26:27 +01:00 • committed by Will Deacon

parent 36e200f019

commit e445816a48

1 changed files with 6 additions and 7 deletions

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drivers/perf/arm_pmu_acpi.c

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