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[209.132.180.67]) by mx.google.com with ESMTP id 10si416090pfy.206.2019.02.04.08.26.09; Mon, 04 Feb 2019 08:26:11 -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; dkim=pass header.i=@linaro.org header.s=google header.b=aVSLiJos; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731510AbfBDQ0H (ORCPT + 31 others); Mon, 4 Feb 2019 11:26:07 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:35114 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730735AbfBDQ0C (ORCPT ); Mon, 4 Feb 2019 11:26:02 -0500 Received: by mail-wm1-f66.google.com with SMTP id t200so566774wmt.0 for ; Mon, 04 Feb 2019 08:26:00 -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=9lKepzvlFqSdyTmpHqFOS3txG3e1Qlnve7EeoiMfLO0=; b=aVSLiJosF7nsn2YlMbkWjfe/sQt+HQvDzUEKw4RhgQWgOVm70k9HPSiS5kbBVP/nE1 uxICapIcLqWzWM7keOzeU4tTM3C0LF+hWtIqKxl8GXPDB84dVtX59Ewhs+KjNoSXstgm a7axZ2Vk2Aky3bhhwgyM5lpXXxhrlCVDzQPX4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9lKepzvlFqSdyTmpHqFOS3txG3e1Qlnve7EeoiMfLO0=; b=m2QdDiCEhN8KXf6xqnfnU/07DhtQK0QPr+7Fg/ZUluVenBqgnXbVep8Kh4MRX+gHw7 Lkf6EHkJo91mDdAwUx2APUcshLac8bx48IcQ34atYAb5w51PMUjBBuFiuguBm9wuqcey GL5+YeP8BeUvJfKF2I8+ZvA+KD7wtL4qR6fXpIjhar19FPmzR5XgiBw7MszN39b9dHk/ vtdK2W8eBlqWtvCaOhu/nVIodzrM/KBVsUwYG77kiape/ccK1y6onRze6du+Ji01azPh KUorsqKVLgvVScUsKQCgafh+dQGIy5m+kWraUGHCrD+cvvPYMCnWt312m0IaarJnRZ50 2WeA== X-Gm-Message-State: AHQUAuYerl3o3XHX+sqx6pIbdI9nkTuUrmfYSZK9tU9d49IgvJiH0joZ ScoEuuRnV6BH9Dm+krgkF3xFug== X-Received: by 2002:a1c:b456:: with SMTP id d83mr127459wmf.115.1549297559980; Mon, 04 Feb 2019 08:25:59 -0800 (PST) Received: from localhost.localdomain ([2a01:e0a:f:6020:70b6:b9c6:89e2:36a]) by smtp.gmail.com with ESMTPSA id a4sm1251992wrt.37.2019.02.04.08.25.58 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 04 Feb 2019 08:25:59 -0800 (PST) From: Vincent Guittot To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, rjw@rjwysocki.net, ulf.hansson@linaro.org, biju.das@bp.renesas.com Cc: linux-arm-kernel@lists.infradead.org, geert@linux-m68k.org, thara.gopinath@linaro.org, linux-renesas-soc@vger.kernel.org, Vincent Guittot Subject: [PATCH 2/2] PM-runtime: update time accounting only when enabled Date: Mon, 4 Feb 2019 17:25:53 +0100 Message-Id: <1549297553-17647-3-git-send-email-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1549297553-17647-1-git-send-email-vincent.guittot@linaro.org> References: <1549297553-17647-1-git-send-email-vincent.guittot@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Update accounting_timestamp field only when PM runtime is enable and don't forget to account the last state before disabling it. Suggested-by: Ulf Hansson Signed-off-by: Vincent Guittot --- drivers/base/power/runtime.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) -- 2.7.4 Reviewed-by: Ulf Hansson diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 50740da..ed62cca 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -66,11 +66,14 @@ static int rpm_suspend(struct device *dev, int rpmflags); */ void update_pm_runtime_accounting(struct device *dev) { - u64 now = ktime_get_mono_fast_ns(); - u64 last = dev->power.accounting_timestamp; - u64 delta; + u64 now, last, delta; - dev->power.accounting_timestamp = now; + if (dev->power.disable_depth > 0) + return; + + last = dev->power.accounting_timestamp; + + dev->power.accounting_timestamp = now = ktime_get_mono_fast_ns(); /* * Because ktime_get_mono_fast_ns() is not monotonic during @@ -82,9 +85,6 @@ void update_pm_runtime_accounting(struct device *dev) delta = now - last; - if (dev->power.disable_depth > 0) - return; - if (dev->power.runtime_status == RPM_SUSPENDED) dev->power.suspended_time += delta; else @@ -1298,6 +1298,9 @@ void __pm_runtime_disable(struct device *dev, bool check_resume) pm_runtime_put_noidle(dev); } + /* Update time accounting before disabling pm runtime */ + update_pm_runtime_accounting(dev); + if (!dev->power.disable_depth++) __pm_runtime_barrier(dev); @@ -1521,7 +1524,6 @@ void pm_runtime_init(struct device *dev) dev->power.request_pending = false; dev->power.request = RPM_REQ_NONE; dev->power.deferred_resume = false; - dev->power.accounting_timestamp = 0; INIT_WORK(&dev->power.work, pm_runtime_work); dev->power.timer_expires = 0;