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authorMarc Zyngier <marc.zyngier@arm.com>2016-07-19 15:39:02 +0100
committerWill Deacon <will.deacon@arm.com>2016-08-09 17:57:39 +0100
commit7f1d642fbb5c356519617c24757a0cbed7f800a8 (patch)
treec39292f0c8281acbb8483ab4e6e6af0aa95e24e6 /drivers
parenta026bb12cc57d758e045126a252e12e868076cb4 (diff)
downloadlinux-7f1d642fbb5c356519617c24757a0cbed7f800a8.tar.bz2
drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property
Patch 19a469a58720 ("drivers/perf: arm-pmu: Handle per-interrupt affinity mask") added support for partitionned PPI setups, but inadvertently broke setups using SPIs without the "interrupt-affinity" property (which is the case for UP platforms). This patch restore the broken functionnality by testing whether the interrupt is percpu or not instead of relying on the using_spi flag that really means "SPI *and* interrupt-affinity property". Acked-by: Mark Rutland <mark.rutland@arm.com> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Fixes: 19a469a58720 ("drivers/perf: arm-pmu: Handle per-interrupt affinity mask") Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/perf/arm_pmu.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index 4c9a537a1265..c494613c1909 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -967,11 +967,12 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)
/* If we didn't manage to parse anything, try the interrupt affinity */
if (cpumask_weight(&pmu->supported_cpus) == 0) {
- if (!using_spi) {
+ int irq = platform_get_irq(pdev, 0);
+
+ if (irq_is_percpu(irq)) {
/* If using PPIs, check the affinity of the partition */
- int ret, irq;
+ int ret;
- irq = platform_get_irq(pdev, 0);
ret = irq_get_percpu_devid_partition(irq, &pmu->supported_cpus);
if (ret) {
kfree(irqs);