Commit a3a8908f authored Oct 25, 2015 by Lucas Stach Committed by Daniel Lezcano Dec 15, 2015

clocksource/drivers/tegra: 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.

This reduces interrupt pressure and wakeups on CPU0 as well as vastly
reducing the number of timer broadcast IPIs.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

parent 11faa20e

drivers/clocksource/tegra20_timer.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -96,7 +96,8 @@ static struct clock_event_device tegra_clockevent = {
		.name = "timer0",
		.rating = 300,
		.features = CLOCK_EVT_FEAT_ONESHOT \|
		CLOCK_EVT_FEAT_PERIODIC,
		CLOCK_EVT_FEAT_PERIODIC \|
		CLOCK_EVT_FEAT_DYNIRQ,
		.set_next_event = tegra_timer_set_next_event,
		.set_state_shutdown = tegra_timer_shutdown,
		.set_state_periodic = tegra_timer_set_periodic,

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