From: robh@kernel.org (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] drivers/perf: arm-pmu: Handle per-interrupt affinity mask
Date: Tue, 5 Jul 2016 09:23:50 -0500 [thread overview]
Message-ID: <20160705142350.GA24441@rob-hp-laptop> (raw)
In-Reply-To: <1467379291-18413-1-git-send-email-marc.zyngier@arm.com>
On Fri, Jul 01, 2016 at 02:21:31PM +0100, Marc Zyngier wrote:
> On a big-little system, PMUs can be wired to CPUs using per CPU
> interrups (PPI). In this case, it is important to make sure that
> the enable/disable do happen on the right set of CPUs.
>
> So instead of relying on the interrupt-affinity property, we can
> use the actual percpu affinity that DT exposes as part of the
> interrupt specifier. The DT binding is also updated to reflect
> the fact that the interrupt-affinity property shouldn't be used
> in that case.
>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> ---
> Documentation/devicetree/bindings/arm/pmu.txt | 4 +++-
Acked-by: Rob Herring <robh@kernel.org>
> drivers/perf/arm_pmu.c | 22 +++++++++++++++++-----
> 2 files changed, 20 insertions(+), 6 deletions(-)
next prev parent reply other threads:[~2016-07-05 14:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 13:21 [PATCH] drivers/perf: arm-pmu: Handle per-interrupt affinity mask Marc Zyngier
2016-07-01 15:00 ` Caesar Wang
2016-07-05 14:23 ` Rob Herring [this message]
2016-07-06 10:39 ` Will Deacon
2016-07-06 14:11 ` Marc Zyngier
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