[PATCH 3/4] arm64: perf: don't warn about missing interrupt-affinity property for PPIs

Will Deacon
2015-04-23T13:50:32Z

PPIs are affine by nature, so the interrupt-affinity property is not
used and therefore we shouldn't print a warning in its absence.

Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
arch/arm64/kernel/perf_event.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 195991dadc37..2a9cbcb61126 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1310,7 +1310,7 @@ 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;
@@ -1319,6 +1319,11 @@ static int armpmu_device_probe(struct platform_device *pdev)
if (!irqs)
return -ENOMEM;

+ /* Don't bother with PPIs; they're already affine */
+ irq = platform_get_irq(pdev, 0);
+ if (irq >= 0 && irq_is_percpu(irq))
+ return 0;
+
for (i = 0; i < pdev->num_resources; ++i) {
struct device_node *dn;
int cpu;
--
2.1.4