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drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property 

Patch 19a469a587 ("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: 19a469a587 ("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>
hifive-unleashed-5.1
Marc Zyngier 2016-07-19 15:39:02 +01:00 committed by Will Deacon
parent a026bb12cc
commit 7f1d642fbb
1 changed files with 5 additions and 4 deletions
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9
drivers/perf/arm_pmu.c
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@ -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) {
/* If using PPIs, check the affinity of the partition */
int ret, irq;
int irq = platform_get_irq(pdev, 0);
if (irq_is_percpu(irq)) {
/* If using PPIs, check the affinity of the partition */
int ret;
irq = platform_get_irq(pdev, 0);
ret = irq_get_percpu_devid_partition(irq, &pmu->supported_cpus);
if (ret) {
kfree(irqs);