Commit-ID: f1c08c9bc8f475aa242270da30b6cc9232bd19e0 Gitweb: http://git.kernel.org/tip/f1c08c9bc8f475aa242270da30b6cc9232bd19e0 Author: Lucas Stach <l.stach@xxxxxxxxxxxxxx> AuthorDate: Wed, 14 Oct 2015 11:24:17 +0200 Committer: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> CommitDate: Thu, 15 Oct 2015 17:42:05 +0200 clocksource/drivers/imx: Allow timer irq affinity change Allow the timer core to change the smp affinity of the broadcast timer irq by setting CLOCK_EVT_FEAT_DYNIRQ flag. For this to work the timer core needs to be told about the used irq. This reduces interrupt pressure and wakeups on CPU0 as well as vastly reducing the number of timer broadcast IPIs. Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> --- drivers/clocksource/timer-imx-gpt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/timer-imx-gpt.c b/drivers/clocksource/timer-imx-gpt.c index 839aba9..99ec967 100644 --- a/drivers/clocksource/timer-imx-gpt.c +++ b/drivers/clocksource/timer-imx-gpt.c @@ -305,13 +305,14 @@ static int __init mxc_clockevent_init(struct imx_timer *imxtm) struct irqaction *act = &imxtm->act; ced->name = "mxc_timer1"; - ced->features = CLOCK_EVT_FEAT_ONESHOT; + ced->features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_DYNIRQ; ced->set_state_shutdown = mxc_shutdown; ced->set_state_oneshot = mxc_set_oneshot; ced->tick_resume = mxc_shutdown; ced->set_next_event = imxtm->gpt->set_next_event; ced->rating = 200; ced->cpumask = cpumask_of(0); + ced->irq = imxtm->irq; clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per), 0xff, 0xfffffffe); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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