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[209.132.180.67]) by mx.google.com with ESMTP id z15si6520470pgv.91.2018.02.05.23.27.48; Mon, 05 Feb 2018 23:28:02 -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=@gmail.com header.s=20161025 header.b=Makxeh8/; 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=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752294AbeBFH0g (ORCPT + 99 others); Tue, 6 Feb 2018 02:26:36 -0500 Received: from mail-wm0-f43.google.com ([74.125.82.43]:33240 "EHLO mail-wm0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752183AbeBFH0a (ORCPT ); Tue, 6 Feb 2018 02:26:30 -0500 Received: by mail-wm0-f43.google.com with SMTP id x4-v6so16429848wmc.0 for ; Mon, 05 Feb 2018 23:26:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=ZJ78X3jUHXXEZTGbED6vwxO4vrmbm5Alo70QLrUcX5M=; b=Makxeh8/yYPcvflkwPhkYNlwV5bYJ5Nc0H+vNEKBjXvMsDrNbqunj45uMFH85gkUIl LuqXpKkBbHaLOAF+wtv7HmSwVyNPyVexsiOjs2xxkP1rATdX4CKdG8/OzKDPbyF4ozgZ d+F70uwWWHh9h2voO7xq/7bYsSnkvDdzmYORI0HKiuhgGUAzBqK0LpxS9es62iAHDDZb HcsGFK/ZP0u9QgruxGhbjMvb0kB+8ETmIUpws13S70dEyWEadD0K/o/ShLgW3YQehuPq z48w9lZOaZmBJAdyRoIqxcleMeU8KMT6DbogR1nvOlpn1MfUWlrdRY2SK0KO8CV+fEyC 3juA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=ZJ78X3jUHXXEZTGbED6vwxO4vrmbm5Alo70QLrUcX5M=; b=Moqt9xIsrP4O4WAbIf8vhJp+TFUGS5Dv8E0auTxxNmlTr+9P6HS1F/y14arzhCyuPn zkfCCoMlrtpIL5rJh85TrsgSbxfw09b0CRG0iUjA3rLKgu1xEIPwx3Qbpg0R4QqAV9r6 +TGhKwvVYkjGf1vZFjajtDf43d2X7ONIR3YrLCHbNQqhVYj1TBz/nyJRBUkLEbkGgWZC qOKU2Fd+UO3hW/FjtaKWcYvH1z9Pfrb+tjUIJJwG4f7OomrO9eQ+UUUCuqs9SFccyHpM 5hmjNgjVDkuc9oJlKzJZAXgVhPU+3zKoDZdJVDlzDVqPo+CCD4k9xxx1HzutqJZ0MUPC yEJQ== X-Gm-Message-State: APf1xPD91T/Xe42wQF2YmVRJrXHhDsWn+XnbvErSaKabX4pJyGmVCYnS olWP7GjvREJvmCeA5NC0JcI= X-Received: by 10.28.154.67 with SMTP id c64mr1015806wme.125.1517901989442; Mon, 05 Feb 2018 23:26:29 -0800 (PST) Received: from localhost.localdomain ([151.15.228.62]) by smtp.gmail.com with ESMTPSA id s13sm2837169wrf.11.2018.02.05.23.26.28 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 05 Feb 2018 23:26:28 -0800 (PST) Date: Tue, 6 Feb 2018 08:26:26 +0100 From: Juri Lelli To: Wen Yang Cc: mingo@redhat.com, peterz@infradead.org, linux-kernel@vger.kernel.org, jiang.biao2@zte.com.cn, zhong.weidong@zte.com.cn Subject: Re: [PATCH] sched/deadline: Make update_curr_dl() more accurate Message-ID: <20180206072626.GZ19535@localhost.localdomain> References: <1517882148-44599-1-git-send-email-wen.yang99@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1517882148-44599-1-git-send-email-wen.yang99@zte.com.cn> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 06/02/18 09:55, Wen Yang wrote: > rq->clock_task may be updated between the two calls of > rq_clock_task() in update_curr_dl(). Calling rq_clock_task() only > once makes it more accurate and efficient, taking update_curr() as > reference. > > Signed-off-by: Wen Yang > Reviewed-by: Jiang Biao > Suggested-by: Peter Zijlstra Acked-by: Juri Lelli Thanks! - Juri