diff options
Diffstat (limited to 'arch/arm64/kernel/perf_event.c')
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 195991dadc37..b31e9a4b6275 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -488,7 +488,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu) } err = request_irq(irq, armpmu->handle_irq, - IRQF_NOBALANCING, + IRQF_NOBALANCING | IRQF_NO_THREAD, "arm-pmu", armpmu); if (err) { pr_err("unable to request IRQ%d for ARM PMU counters\n", @@ -1310,11 +1310,16 @@ static const struct of_device_id armpmu_of_device_ids[] = { static int armpmu_device_probe(struct platform_device *pdev) { - int i, *irqs; + int i, irq, *irqs; if (!cpu_pmu) return -ENODEV; + /* Don't bother with PPIs; they're already affine */ + irq = platform_get_irq(pdev, 0); + if (irq >= 0 && irq_is_percpu(irq)) + goto out; + irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL); if (!irqs) return -ENOMEM; @@ -1327,7 +1332,7 @@ static int armpmu_device_probe(struct platform_device *pdev) i); if (!dn) { pr_warn("Failed to parse %s/interrupt-affinity[%d]\n", - of_node_full_name(dn), i); + of_node_full_name(pdev->dev.of_node), i); break; } @@ -1335,12 +1340,13 @@ static int armpmu_device_probe(struct platform_device *pdev) if (arch_find_n_match_cpu_physical_id(dn, cpu, NULL)) break; - of_node_put(dn); if (cpu >= nr_cpu_ids) { pr_warn("Failed to find logical CPU for %s\n", dn->name); + of_node_put(dn); break; } + of_node_put(dn); irqs[i] = cpu; } @@ -1350,6 +1356,7 @@ static int armpmu_device_probe(struct platform_device *pdev) else kfree(irqs); +out: cpu_pmu->plat_device = pdev; return 0; } |