From patchwork Thu Feb 25 13:37:16 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Lezcano X-Patchwork-Id: 62888 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp165164lbc; Thu, 25 Feb 2016 05:38:19 -0800 (PST) X-Received: by 10.98.73.6 with SMTP id w6mr63981506pfa.82.1456407493817; Thu, 25 Feb 2016 05:38:13 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u69si9436129pfa.253.2016.02.25.05.38.13; Thu, 25 Feb 2016 05:38:13 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dkim=pass header.i=@linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932981AbcBYNiE (ORCPT + 30 others); 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 Received: by mail-wm0-f52.google.com with SMTP id g62so28028613wme.0 for ; Thu, 25 Feb 2016 05:37:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=1NxBFVZ5MFxdZ0QpQ9jCBR5sl9dIjwst4tXudNIFmhA=; b=MIAmXyhx7YrbQ9kkSYSsz48SyT0qnqtzlvT4C+0U5VOCs1eqlvoJmNdoFRfY1ePbRi kfZNBIV+DvjT2ov+Aa6AIpSx09Dk/HVLVi+Oo3T3ibMBmH0zDq8gv6yO34V9ZWTdNA1K YR3z+oSvuT6AFKPZfItwELWOPbTR5xk6WKQyk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=1NxBFVZ5MFxdZ0QpQ9jCBR5sl9dIjwst4tXudNIFmhA=; b=ljKbaFFTSAfZ1FBq1piylC4fPzX9Gi2us/cMfXt3+yY8BVF9DHNTcg9Ly9wu80f7ZN UZeH+40tET0nnJrpVlMaoYG8OyJMVoToW3zlFSvLKJeZ+4bF3wkyiRhEbwJ5HMKPJ+ZI tib8Y9XD+slV4ZCyg8K9sNueX834sOwFgSdjOHW2A/2M714xeixOauNcyMHrExvci+tU 1h/TnMMrR7kAeYMpaOb5YOr5YR71FnZLz0voqOJyc12jn3RepjhfpfLfyWzKreg7mfiT aDYsbi/5mjBdQULOa/+M014z7zRE6wk7gEXt+K6GGpoHcDFyJn2tsgejbMWIxq/pefb3 zaUQ== X-Gm-Message-State: AG10YOQUJFC/4aHtoj823yxElSDju8y4boNF9CEJi8ZLm6lPr9Khb+wSDT02lXJT708WXHGs X-Received: by 10.28.140.202 with SMTP id o193mr3974307wmd.102.1456407477800; Thu, 25 Feb 2016 05:37:57 -0800 (PST) Received: from mai.com (sju31-1-78-210-255-2.fbx.proxad.net. [78.210.255.2]) by smtp.gmail.com with ESMTPSA id g1sm4056053wmc.0.2016.02.25.05.37.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 25 Feb 2016 05:37:57 -0800 (PST) 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 Precedence: bulk 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(+) -- 1.9.1 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;