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[8/9] clockevents/drivers/arm_global_timer: Implement ->set_state_oneshot_stopped()

Message ID 1456407438-6131-8-git-send-email-daniel.lezcano@linaro.org
State Accepted
Commit 3effa3ceea2da9f67f042a694e24ba0d8143cff8
Headers show

Commit Message

Daniel Lezcano Feb. 25, 2016, 1:37 p.m. UTC 
From: Viresh Kumar <viresh.kumar@linaro.org>


set_state_oneshot_stopped() is called by the clkevt core, when the next
event is required at an expiry time of 'KTIME_MAX'. This normally
happens with NO_HZ_{IDLE|FULL} in both LOWRES/HIGHRES modes.

This patch makes the clockevent device to stop on such an event, to
avoid spurious interrupts, as explained by: commit 8fff52fd5093
("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state").

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

---
 drivers/clocksource/arm_global_timer.c | 1 +
 1 file changed, 1 insertion(+)

-- 
1.9.1
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Patch

diff --git a/drivers/clocksource/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c
index 36998fa..9df0d16 100644
--- a/drivers/clocksource/arm_global_timer.c
+++ b/drivers/clocksource/arm_global_timer.c
@@ -175,6 +175,7 @@  static int gt_clockevents_init(struct clock_event_device *clk)
 	clk->set_state_shutdown = gt_clockevent_shutdown;
 	clk->set_state_periodic = gt_clockevent_set_periodic;
 	clk->set_state_oneshot = gt_clockevent_shutdown;
+	clk->set_state_oneshot_stopped = gt_clockevent_shutdown;
 	clk->set_next_event = gt_clockevent_set_next_event;
 	clk->cpumask = cpumask_of(cpu);
 	clk->rating = 300;