diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2011-06-06 11:37:50 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2011-08-31 11:50:08 +0200 |
| commit | 7ae18a5717cbbf1879bdd5b66d7009a9958e5aef (patch) | |
| tree | 877bd254703c985de0db15df76a2bf3ead1ea06f /arch/arm/kernel | |
| parent | ARM: perf: lock PMU registers per-CPU (diff) | |
| download | linux-7ae18a5717cbbf1879bdd5b66d7009a9958e5aef.tar.xz linux-7ae18a5717cbbf1879bdd5b66d7009a9958e5aef.zip | |
ARM: perf: add type field to struct arm_pmu
Currently, the ARM perf code assumes all PMUs it will handle are
CPU PMUs, having ARM_PMU_DEVICE_CPU hardcoded when reserving or
releasing hardware. This means that currently, the ARM perf code can't
support system PMUs.
This patch adds a 'type' field to struct arm_pmu, which allows the code
to reserve & release the hardware regardless of the PMU type.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 9331d5731445..1a2ebbf07fb7 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -60,6 +60,7 @@ static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events); struct arm_pmu { enum arm_perf_pmu_ids id; + enum arm_pmu_type type; cpumask_t active_irqs; const char *name; irqreturn_t (*handle_irq)(int irq_num, void *dev); @@ -396,7 +397,7 @@ armpmu_release_hardware(void) free_irq(irq, NULL); } - release_pmu(ARM_PMU_DEVICE_CPU); + release_pmu(armpmu->type); } static int @@ -407,7 +408,7 @@ armpmu_reserve_hardware(void) int i, err, irq, irqs; struct platform_device *pmu_device = armpmu->plat_device; - err = reserve_pmu(ARM_PMU_DEVICE_CPU); + err = reserve_pmu(armpmu->type); if (err) { pr_warning("unable to reserve pmu\n"); return err; @@ -691,6 +692,7 @@ static void __init cpu_pmu_init(struct arm_pmu *armpmu) raw_spin_lock_init(&events->pmu_lock); } armpmu->get_hw_events = armpmu_get_cpu_events; + armpmu->type = ARM_PMU_DEVICE_CPU; } /* |