diff options
| author | Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> | 2012-09-25 17:26:51 +0100 |
|---|---|---|
| committer | Jon Medhurst <tixy@linaro.org> | 2013-07-17 11:12:04 +0100 |
| commit | 77eae07cad7b4940a04a156fbc25f887e8b62f2e (patch) | |
| tree | 8d33c014c8cbac7789ebce9fccfb1847ef7c6486 /arch/arm/include/asm | |
| parent | c5cb3e02afbaaa22d4fcd6d9f641bc60b357eb24 (diff) | |
ARM: perf: set cpu affinity to support multiple PMUs
In a system with multiple heterogeneous CPU PMUs and each PMUs can handle
events on a subset of CPUs, probably belonging a the same cluster.
This patch introduces a cpumask to track which CPUs each PMU supports.
It also updates armpmu_event_init to reject cpu-specific events being
initialised for unsupported CPUs. Since process-specific events can be
initialised for all the CPU PMUs,armpmu_start/stop/add are modified to
prevent from being added on unsupported CPUs.
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/pmu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h index f24edad26c7..3713e57a467 100644 --- a/arch/arm/include/asm/pmu.h +++ b/arch/arm/include/asm/pmu.h @@ -65,6 +65,7 @@ struct pmu_hw_events { struct arm_pmu { struct pmu pmu; cpumask_t active_irqs; + cpumask_t valid_cpus; char *name; irqreturn_t (*handle_irq)(int irq_num, void *dev); void (*enable)(struct perf_event *event); |