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drivers: perf: arm_pmu: Drop 'pmu_lock' element from 'struct pmu_hw_events'

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As 'pmu_lock' element is not being used in any ARM PMU implementation, just
drop this from 'struct pmu_hw_events'.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20231115092805.737822-3-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Anshuman Khandual 2023-11-15 14:58:05 +05:30 committed by Will Deacon
parent 5cd7da19cb
commit 118eb89b1e
2 changed files with 0 additions and 7 deletions
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1
drivers/perf/arm_pmu.c
View File

@ -893,7 +893,6 @@ struct arm_pmu *armpmu_alloc(void)
struct pmu_hw_events *events;
events = per_cpu_ptr(pmu->hw_events, cpu);
raw_spin_lock_init(&events->pmu_lock);
events->percpu_pmu = pmu;
}

6
include/linux/perf/arm_pmu.h
View File

@ -59,12 +59,6 @@ struct pmu_hw_events {
*/
DECLARE_BITMAP(used_mask, ARMPMU_MAX_HWEVENTS);
/*
* Hardware lock to serialize accesses to PMU registers. Needed for the
* read/modify/write sequences.
*/
raw_spinlock_t pmu_lock;
/*
* When using percpu IRQs, we need a percpu dev_id. Place it here as we
* already have to allocate this struct per cpu.