From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B1515CA9EC4 for ; Tue, 29 Oct 2019 08:33:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7419A2054F for ; Tue, 29 Oct 2019 08:33:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="vQuSHLbM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729558AbfJ2IdD (ORCPT ); Tue, 29 Oct 2019 04:33:03 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:35906 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729255AbfJ2IdC (ORCPT ); Tue, 29 Oct 2019 04:33:02 -0400 Received: by mail-wm1-f67.google.com with SMTP id c22so1415827wmd.1 for ; Tue, 29 Oct 2019 01:33:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:openpgp:autocrypt:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=TuaFKwOqLfCyTxW4lJ7Muo4soa6k3IgCJhdOUWVat14=; b=vQuSHLbM1M+g2dE2RWHoFfkMPa6hn4kwqRQeffj8EKR1KZSyfPxr89B9ej7Lb7NKfo aYz2znTUxH0ZvzXGf4ZH55KZNMgzoksJCqrHj3gZBla+Z0dFk7bLXqVUQcJ10BM6TIRl DY0SQGayHvTEirnKY+nQ3A7tuDKEfs2FLrDl1ZqPdl3fK/HbF+y+kKM1qN6L55RfShZL wqqTNsZFVJMcKHoQGMtaTiZOSb8JVGa2V9xFLoscNKeWpTCNKZLAgGkNSbglkMYaTM1T NQv0sizZA8bzvJKaOfqQF5X565fwBccMMH3q4tNRzoAvGHKQKiot6uH9mazQfsM8w3jw RqlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=TuaFKwOqLfCyTxW4lJ7Muo4soa6k3IgCJhdOUWVat14=; b=FsxgeAbCU0D24ukF6RYPlNFnIIsYlmgf+SeTw/0XhVKfxo76wGV7rXHjKGUJ/PG9oc ps9m0PRiFkD0mbqb7gKB+YRHWp/npN5KGilL9GO0Z9DASXFAO5ezf4rFIQfmcaYGlW33 LOtsZlrWgHkN4fekQv1hFct4RnMywSNqhd4lNreX3K+7B7jlnnm7qmt7Y4qPlZ3x44so ubvfp3bfRdTuycIdMSfNheVZ1oFvuoZmCewYwNwJcON/DniZXxU3uJay0uh/7J00v4/D YtL+V5lXVhSfBFDQvA4JtUSJ2DgbYFIhe6Lh+WzVZ/MfbufDp4UvZ5ZF4HSBqTEadV8N og0w== X-Gm-Message-State: APjAAAWNqIieaLkoqbcpIjy8LU6uxXaPgOBNj7hJw0Uk42/X6w9gBGwd lMSVcPrrVLTzpb81YXCFrj0Jmeqhb0s= X-Google-Smtp-Source: APXvYqyGTtxx8rgMRi8DrdbGaenGD6rI5Wu+D67YfoWg7cWpkiP3C1WaqimRAY4hJzoAnSL+4hMbHA== X-Received: by 2002:a05:600c:28d:: with SMTP id 13mr2725099wmk.144.1572337979286; Tue, 29 Oct 2019 01:32:59 -0700 (PDT) Received: from ?IPv6:2a01:e34:ed2f:f020:4802:1c71:dc87:72b7? ([2a01:e34:ed2f:f020:4802:1c71:dc87:72b7]) by smtp.googlemail.com with ESMTPSA id l14sm14546672wrr.37.2019.10.29.01.32.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 29 Oct 2019 01:32:58 -0700 (PDT) Subject: Re: [PATCH V5 1/3] cpuidle: play_idle: Make play_idle more flexible To: Ulf Hansson Cc: "Rafael J. Wysocki" , Mathieu Poirier , Ingo Molnar , Peter Zijlstra , Linux PM , Linux Kernel Mailing List References: <20191028143419.16236-1-daniel.lezcano@linaro.org> From: Daniel Lezcano Openpgp: preference=signencrypt Autocrypt: addr=daniel.lezcano@linaro.org; prefer-encrypt=mutual; keydata= mQINBFv/yykBEADDdW8RZu7iZILSf3zxq5y8YdaeyZjI/MaqgnvG/c3WjFaunoTMspeusiFE sXvtg3ehTOoyD0oFjKkHaia1Zpa1m/gnNdT/WvTveLfGA1gH+yGes2Sr53Ht8hWYZFYMZc8V 2pbSKh8wepq4g8r5YI1XUy9YbcTdj5mVrTklyGWA49NOeJz2QbfytMT3DJmk40LqwK6CCSU0 9Ed8n0a+vevmQoRZJEd3Y1qXn2XHys0F6OHCC+VLENqNNZXdZE9E+b3FFW0lk49oLTzLRNIq 0wHeR1H54RffhLQAor2+4kSSu8mW5qB0n5Eb/zXJZZ/bRiXmT8kNg85UdYhvf03ZAsp3qxcr xMfMsC7m3+ADOtW90rNNLZnRvjhsYNrGIKH8Ub0UKXFXibHbafSuq7RqyRQzt01Ud8CAtq+w P9EftUysLtovGpLSpGDO5zQ++4ZGVygdYFr318aGDqCljKAKZ9hYgRimPBToDedho1S1uE6F 6YiBFnI3ry9+/KUnEP6L8Sfezwy7fp2JUNkUr41QF76nz43tl7oersrLxHzj2dYfWUAZWXva wW4IKF5sOPFMMgxoOJovSWqwh1b7hqI+nDlD3mmVMd20VyE9W7AgTIsvDxWUnMPvww5iExlY 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<2aadcd27-b32d-89f1-8bb8-76893f007c66@linaro.org> Date: Tue, 29 Oct 2019 09:32:57 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Ulf, On 28/10/2019 23:26, Ulf Hansson wrote: > On Mon, 28 Oct 2019 at 15:34, Daniel Lezcano wrote: >> >> The play_idle function has two users, the intel powerclamp and the >> idle_injection. >> >> The idle injection cooling device uses the function via the >> idle_injection powercap's APIs. Unfortunately, play_idle is currently >> limited by the idle state depth: by default the deepest idle state is >> selected. On the ARM[64] platforms, most of the time it is the cluster >> idle state, the exit latency and the residency can be very high. That >> reduces the scope of the idle injection usage because the impact on >> the performances can be very significant. >> >> If the idle injection cycles can be done with a shallow state like a >> retention state, the cooling effect would eventually give similar >> results than the cpufreq cooling device. >> >> In order to prepare the function to receive an idle state parameter, >> let's replace the 'use_deepest_state' boolean field with 'use_state' >> and use this value to enter the specific idle state. >> >> The current code keeps the default behavior which is go to the deepest >> idle state. >> >> Signed-off-by: Daniel Lezcano >> Acked-by: Mathieu Poirier >> Cc: Ulf Hansson > > This looks good to me! Just a minor nitpick, see more below. If you > don't like my suggestions, I am fine as is. Therefore: Thank you very much for reviewing the patches. I don't have any objection about renaming the variables as you suggest. Rafael, is it fine the renaming? > Reviewed-by: Ulf Hansson [ ... ] -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog