[PATCH 4/4][V2] ARM: timer-sp: Set dynamic irq affinity
Russell King - ARM Linux
linux at arm.linux.org.uk
Mon Mar 11 12:22:55 EDT 2013
On Fri, Mar 08, 2013 at 04:28:55PM +0100, Daniel Lezcano wrote:
> On 03/02/2013 11:10 AM, Daniel Lezcano wrote:
> > From: Viresh Kumar <viresh.kumar at linaro.org>
> > When a cpu goes to a deep idle state where its local timer is shutdown, it
> > notifies the time frame work to use the broadcast timer instead.
> > Unfortunately, the broadcast device could wake up any CPU, including an idle one
> > which is not concerned by the wake up at all.
> > This implies, in the worst case, an idle CPU will wake up to send an IPI to
> > another idle cpu.
> > This patch fixes this for ARM platforms using timer-sp, by setting
> > CLOCK_EVT_FEAT_DYNIRQ feature.
> > Signed-off-by: Viresh Kumar <viresh.kumar at linaro.org>
> > Signed-off-by: Daniel Lezcano <daniel.lezcano at linaro.org>
> > ---
> Hi Russell,
> I asked Thomas if he could take this patch in its tree but it falls
> under your umbrella. Thomas agreed to take it if you ack this patch.
> Is this patch acceptable for you ?
It's simple enough.
Acked-by: Russell King <rmk+kernel at arm.linux.org.uk>
More information about the linux-arm-kernel