arch/tile: Implement ->set_state_oneshot_stopped()

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: Chris Metcalf <cmetcalf@mellanox.com>

diff --git a/arch/tile/kernel/time.c b/arch/tile/kernel/time.c
index 6643ffbc06155cfa0336c4648e82e584dabf4a22..f95d65f3162bc3a567df4ec346ca69fe605babbc 100644 (file)
--- a/arch/tile/kernel/time.c
+++ b/arch/tile/kernel/time.c
@@ -162,6 +162,7 @@ static DEFINE_PER_CPU(struct clock_event_device, tile_timer) = {
        .set_next_event = tile_timer_set_next_event,
        .set_state_shutdown = tile_timer_shutdown,
        .set_state_oneshot = tile_timer_shutdown,
+       .set_state_oneshot_stopped = tile_timer_shutdown,
        .tick_resume = tile_timer_shutdown,
 };