On 05/25/2016 11:50 AM, Caesar Wang wrote: > From: Huang Tao <huangtao at rock-chips.com> > > The rockchip timer is broadcast timer. Add CLOCK_EVT_FEAT_DYNIRQ > flag and set cpumask to all cpu to save power by avoid unnecessary > wakeups and IPIs. > > Signed-off-by: Huang Tao <huangtao at rock-chips.com> > Cc: Daniel Lezcano <daniel.lezcano at linaro.org> > Cc: Thomas Gleixner <tglx at linutronix.de> > Cc: Heiko Stuebner <heiko at sntech.de> > Tested-by: Jianqun Xu <jay.xu at rock-chips.com> > Signed-off-by: Caesar Wang <wxt at rock-chips.com> > --- > > drivers/clocksource/rockchip_timer.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c > index b93fed6..f3dfb1a 100644 > --- a/drivers/clocksource/rockchip_timer.c > +++ b/drivers/clocksource/rockchip_timer.c > @@ -150,12 +150,13 @@ static void __init rk_timer_init(struct device_node *np) > } > > ce->name = TIMER_NAME; > - ce->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; > + ce->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT | > + CLOCK_EVT_FEAT_DYNIRQ; > ce->set_next_event = rk_timer_set_next_event; > ce->set_state_shutdown = rk_timer_shutdown; > ce->set_state_periodic = rk_timer_set_periodic; > ce->irq = irq; > - ce->cpumask = cpumask_of(0); > + ce->cpumask = cpu_all_mask; s/cpu_all_mask/cpu_possible_mask/ > ce->rating = 250; > > ret = request_irq(irq, rk_timer_interrupt, IRQF_TIMER, TIMER_NAME, ce); > -- <http://www.linaro.org/> Linaro.org ? Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog
