diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/pmu.txt | 4 | ||||
| -rw-r--r-- | drivers/perf/arm_pmu.c | 27 |
2 files changed, 25 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/arm/pmu.txt b/Documentation/devicetree/bindings/arm/pmu.txt index 74d5417d0410..61c8b4620415 100644 --- a/Documentation/devicetree/bindings/arm/pmu.txt +++ b/Documentation/devicetree/bindings/arm/pmu.txt @@ -39,7 +39,9 @@ Optional properties: When using a PPI, specifies a list of phandles to CPU nodes corresponding to the set of CPUs which have a PMU of this type signalling the PPI listed in the - interrupts property. + interrupts property, unless this is already specified + by the PPI interrupt specifier itself (in which case + the interrupt-affinity property shouldn't be present). This property should be present when there is more than a single SPI. diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 140436a046c0..8e4d7f590b06 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -603,7 +603,8 @@ static void cpu_pmu_free_irq(struct arm_pmu *cpu_pmu) irq = platform_get_irq(pmu_device, 0); if (irq >= 0 && irq_is_percpu(irq)) { - on_each_cpu(cpu_pmu_disable_percpu_irq, &irq, 1); + on_each_cpu_mask(&cpu_pmu->supported_cpus, + cpu_pmu_disable_percpu_irq, &irq, 1); free_percpu_irq(irq, &hw_events->percpu_pmu); } else { for (i = 0; i < irqs; ++i) { @@ -645,7 +646,9 @@ static int cpu_pmu_request_irq(struct arm_pmu *cpu_pmu, irq_handler_t handler) irq); return err; } - on_each_cpu(cpu_pmu_enable_percpu_irq, &irq, 1); + + on_each_cpu_mask(&cpu_pmu->supported_cpus, + cpu_pmu_enable_percpu_irq, &irq, 1); } else { for (i = 0; i < irqs; ++i) { int cpu = i; @@ -961,9 +964,23 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu) i++; } while (1); - /* If we didn't manage to parse anything, claim to support all CPUs */ - if (cpumask_weight(&pmu->supported_cpus) == 0) - cpumask_setall(&pmu->supported_cpus); + /* If we didn't manage to parse anything, try the interrupt affinity */ + if (cpumask_weight(&pmu->supported_cpus) == 0) { + if (!using_spi) { + /* If using PPIs, check the affinity of the partition */ + int ret, irq; + + irq = platform_get_irq(pdev, 0); + ret = irq_get_percpu_devid_partition(irq, &pmu->supported_cpus); + if (ret) { + kfree(irqs); + return ret; + } + } else { + /* Otherwise default to all CPUs */ + cpumask_setall(&pmu->supported_cpus); + } + } /* If we matched up the IRQ affinities, use them to route the SPIs */ if (using_spi && i == pdev->num_resources) |