From mboxrd@z Thu Jan 1 00:00:00 1970 From: wxt@rock-chips.com (Caesar Wang) Date: Wed, 25 May 2016 17:50:00 +0800 Subject: [PATCH 3/5] clocksource: rockchip: add dynamic irq flag to the timer In-Reply-To: <1464169802-6033-1-git-send-email-wxt@rock-chips.com> References: <1464169802-6033-1-git-send-email-wxt@rock-chips.com> Message-ID: <1464169802-6033-4-git-send-email-wxt@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Huang Tao 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 Cc: Daniel Lezcano Cc: Thomas Gleixner Cc: Heiko Stuebner Tested-by: Jianqun Xu Signed-off-by: Caesar Wang --- 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; ce->rating = 250; ret = request_irq(irq, rk_timer_interrupt, IRQF_TIMER, TIMER_NAME, ce); -- 1.9.1