From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932968AbcBYNiE (ORCPT ); Thu, 25 Feb 2016 08:38:04 -0500 Received: from mail-wm0-f52.google.com ([74.125.82.52]:37063 "EHLO mail-wm0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760750AbcBYNh7 (ORCPT ); Thu, 25 Feb 2016 08:37:59 -0500 From: Daniel Lezcano To: tglx@linutronix.de Cc: Viresh Kumar , Srinivas Kandagatla , Maxime Coquelin , Patrice Chotard , linux-arm-kernel@lists.infradead.org (moderated list:ARM/STI ARCHITECTURE), kernel@stlinux.com (open list:ARM/STI ARCHITECTURE), linux-kernel@vger.kernel.org (open list:CLOCKSOURCE, CLOC...) Subject: [PATCH 8/9] clockevents/drivers/arm_global_timer: Implement ->set_state_oneshot_stopped() Date: Thu, 25 Feb 2016 14:37:16 +0100 Message-Id: <1456407438-6131-8-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1456407438-6131-1-git-send-email-daniel.lezcano@linaro.org> References: <56CF00F6.9010301@linaro.org> <1456407438-6131-1-git-send-email-daniel.lezcano@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Viresh Kumar 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 Signed-off-by: Daniel Lezcano --- drivers/clocksource/arm_global_timer.c | 1 + 1 file changed, 1 insertion(+) 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; -- 1.9.1