From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760762AbcBYNh7 (ORCPT ); Thu, 25 Feb 2016 08:37:59 -0500 Received: from mail-wm0-f54.google.com ([74.125.82.54]:36374 "EHLO mail-wm0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760739AbcBYNh5 (ORCPT ); Thu, 25 Feb 2016 08:37:57 -0500 From: Daniel Lezcano To: tglx@linutronix.de Cc: Viresh Kumar , linux-kernel@vger.kernel.org (open list:CLOCKSOURCE, CLOC...) Subject: [PATCH 7/9] clockevents/drivers/arm_arch_timer: Implement ->set_state_oneshot_stopped() Date: Thu, 25 Feb 2016 14:37:15 +0100 Message-Id: <1456407438-6131-7-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_arch_timer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 7c567f0..f0dd9d4 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -274,10 +274,12 @@ static void __arch_timer_setup(unsigned type, if (arch_timer_use_virtual) { clk->irq = arch_timer_ppi[VIRT_PPI]; clk->set_state_shutdown = arch_timer_shutdown_virt; + clk->set_state_oneshot_stopped = arch_timer_shutdown_virt; clk->set_next_event = arch_timer_set_next_event_virt; } else { clk->irq = arch_timer_ppi[PHYS_SECURE_PPI]; clk->set_state_shutdown = arch_timer_shutdown_phys; + clk->set_state_oneshot_stopped = arch_timer_shutdown_phys; clk->set_next_event = arch_timer_set_next_event_phys; } } else { @@ -287,10 +289,12 @@ static void __arch_timer_setup(unsigned type, clk->cpumask = cpu_all_mask; if (arch_timer_mem_use_virtual) { clk->set_state_shutdown = arch_timer_shutdown_virt_mem; + clk->set_state_oneshot_stopped = arch_timer_shutdown_virt_mem; clk->set_next_event = arch_timer_set_next_event_virt_mem; } else { clk->set_state_shutdown = arch_timer_shutdown_phys_mem; + clk->set_state_oneshot_stopped = arch_timer_shutdown_phys_mem; clk->set_next_event = arch_timer_set_next_event_phys_mem; } -- 1.9.1