diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-07-19 16:39:02 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-08-09 18:57:39 +0200 |
| commit | 7f1d642fbb5c356519617c24757a0cbed7f800a8 (patch) | |
| tree | c39292f0c8281acbb8483ab4e6e6af0aa95e24e6 | |
| parent | drivers/perf: arm-pmu: convert arm_pmu_mutex to spinlock (diff) | |
| download | linux-7f1d642fbb5c356519617c24757a0cbed7f800a8.tar.xz linux-7f1d642fbb5c356519617c24757a0cbed7f800a8.zip | |
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>
| -rw-r--r-- | drivers/perf/arm_pmu.c | 7 |
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); |