From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Thu, 23 Apr 2015 15:01:00 +0100 Subject: [PATCH 1/4] ARM: perf: don't warn about missing interrupt-affinity property for PPIs In-Reply-To: <1429797033-3787-1-git-send-email-will.deacon@arm.com> References: <1429797033-3787-1-git-send-email-will.deacon@arm.com> Message-ID: <20150423140058.GF29702@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Apr 23, 2015 at 02:50:30PM +0100, Will Deacon wrote: > 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 > Signed-off-by: Will Deacon > --- > arch/arm/kernel/perf_event_cpu.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c > index 91c7ba182dcd..becf7ad6eddc 100644 > --- a/arch/arm/kernel/perf_event_cpu.c > +++ b/arch/arm/kernel/perf_event_cpu.c > @@ -303,12 +303,17 @@ static int probe_current_pmu(struct arm_pmu *pmu) > > static int of_pmu_irq_cfg(struct platform_device *pdev) > { > - int i; > + int i, irq; > int *irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL); > > 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; Is 0 still a valid IRQ on any ARM platforms? Otherwise, looks fine to me. Acked-by: Mark Rutland Mark