From: Chris Metcalf <cmetcalf@mellanox.com>
Date: Fri, 3 Nov 2017 17:20:54 +0000 (-0400)
Subject: arch/tile: Implement ->set_state_oneshot_stopped()
X-Git-Tag: v4.14-rc8~13^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=777a45b458660b18d7d7c3e0d874d08650c99cd2;p=platform%2Fkernel%2Flinux-rpi3.git

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 6643ffb..f95d65f 100644
--- 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,
 };