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| author | Julien Thierry <julien.thierry@arm.com> | 2017-10-13 12:26:45 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-10-24 16:04:05 +0100 |
| commit | 611479c79a94e6713bc044b0410aa8b867375d17 (patch) | |
| tree | 4e6b947230cafaa7e10c47bdfc5ca30d0e066f41 /drivers/perf/arm_pmu.c | |
| parent | 08395c7f4d9f5808b5754a0dbed969f378bde0c3 (diff) | |
| download | linux-611479c79a94e6713bc044b0410aa8b867375d17.tar.gz linux-611479c79a94e6713bc044b0410aa8b867375d17.tar.bz2 linux-611479c79a94e6713bc044b0410aa8b867375d17.zip | |
arm/arm64: pmu: Distinguish percpu irq and percpu_devid irq
arm_pmu interrupts are maked as PERCPU even when these are not local
physical interrupts to a single CPU. When using non-local interrupts,
interrupts marked as PERCPU will not get freed not disabled properly
by the PMU driver.
Check if interrupts are local to a single CPU with PERCPU_DEVID since
this is what the PMU driver really needs to know.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/perf/arm_pmu.c')
| -rw-r--r-- | drivers/perf/arm_pmu.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index d14fc2e67f93..7bc5eee96b31 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -539,7 +539,7 @@ void armpmu_free_irq(struct arm_pmu *armpmu, int cpu) if (!cpumask_test_and_clear_cpu(cpu, &armpmu->active_irqs)) return; - if (irq_is_percpu(irq)) { + if (irq_is_percpu_devid(irq)) { free_percpu_irq(irq, &hw_events->percpu_pmu); cpumask_clear(&armpmu->active_irqs); return; @@ -565,10 +565,10 @@ int armpmu_request_irq(struct arm_pmu *armpmu, int cpu) if (!irq) return 0; - if (irq_is_percpu(irq) && cpumask_empty(&armpmu->active_irqs)) { + if (irq_is_percpu_devid(irq) && cpumask_empty(&armpmu->active_irqs)) { err = request_percpu_irq(irq, handler, "arm-pmu", &hw_events->percpu_pmu); - } else if (irq_is_percpu(irq)) { + } else if (irq_is_percpu_devid(irq)) { int other_cpu = cpumask_first(&armpmu->active_irqs); int other_irq = per_cpu(hw_events->irq, other_cpu); @@ -649,7 +649,7 @@ static int arm_perf_starting_cpu(unsigned int cpu, struct hlist_node *node) irq = armpmu_get_cpu_irq(pmu, cpu); if (irq) { - if (irq_is_percpu(irq)) { + if (irq_is_percpu_devid(irq)) { enable_percpu_irq(irq, IRQ_TYPE_NONE); return 0; } @@ -667,7 +667,7 @@ static int arm_perf_teardown_cpu(unsigned int cpu, struct hlist_node *node) return 0; irq = armpmu_get_cpu_irq(pmu, cpu); - if (irq && irq_is_percpu(irq)) + if (irq && irq_is_percpu_devid(irq)) disable_percpu_irq(irq); return 0; |