Commit 8ded1e1a authored by Stephen Boyd's avatar Stephen Boyd Committed by Russell King

ARM: 8401/1: perf: Set affinity for PPI based PMUs

For PPI based PMUs, we bail out early in of_pmu_irq_cfg() without
setting the PMU's supported_cpus bitmap. This causes the
smp_call_function_any() in armv7_probe_num_events() to fail. Set
the bitmap to be all CPUs so that we properly probe PMUs that use

Fixes: cc88116d ("arm: perf: treat PMUs as CPU affine")
Cc: Mark Rutland <>
Signed-off-by: default avatarStephen Boyd <>
Signed-off-by: default avatarWill Deacon <>
Signed-off-by: default avatarRussell King <>
parent eeedcea6
......@@ -795,8 +795,10 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)
/* Don't bother with PPIs; they're already affine */
irq = platform_get_irq(pdev, 0);
if (irq >= 0 && irq_is_percpu(irq))
if (irq >= 0 && irq_is_percpu(irq)) {
return 0;
irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL);
if (!irqs)
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