Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-block.git] / drivers / perf / arm_pmu.c

diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index f6ab4f7f75bf97973227023e6d6933c6ca46ad98..6ccb994bdfcbd160148c535f18ea656ea7ee13e6 100644 (file)
--- 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;
@@ -962,9 +965,23 @@ 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)