Messages in this thread | | | Date | Tue, 14 Jan 2014 09:40:10 +0100 | From | Daniel Lezcano <> | Subject | Re: [PATCH] clocksource: arch_timer: Set dynamic irq affinity on mmio clockevent |
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On 01/06/2014 11:56 PM, Stephen Boyd wrote: > Set the CLOCK_EVT_FEAT_DYNIRQ flag on the memory mapped > clockevent so that we save power by waking up the CPU with the > next event when this timer is used in broadcast mode. > > Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> > --- > drivers/clocksource/arm_arch_timer.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c > index 95fb944e15ee..57e823c44d2a 100644 > --- a/drivers/clocksource/arm_arch_timer.c > +++ b/drivers/clocksource/arm_arch_timer.c > @@ -277,6 +277,7 @@ static void __arch_timer_setup(unsigned type, > clk->set_next_event = arch_timer_set_next_event_phys; > } > } else { > + clk->features |= CLOCK_EVT_FEAT_DYNIRQ; > clk->name = "arch_mem_timer"; > clk->rating = 400; > clk->cpumask = cpu_all_mask; >
Applied in my tree for 3.15.
I am curious how much you saved in your current scenario. Did you had time to do some rough measurements ?
Thanks -- Daniel
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