From patchwork Tue Aug 20 15:23:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 11104061 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 34896912 for ; Tue, 20 Aug 2019 15:24:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1352F20578 for ; Tue, 20 Aug 2019 15:24:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="j1Y/3Cdm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1352F20578 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=hkPe+rrOypQIuuXTLGB8WhjhYTIcRj+hMBvvpOXc6K4=; b=j1Y /3CdmNHldgZ/ooQxLXNbfSQx/WnTA8e3zzU06jgFNbnJ6K54LsXWnM6dU23plfjAIkFs58MBmRc3l qwpixc5xN4Q8KH4DgqZs5G6OdUKDtgWLx0FbzC46/Scy4x8SvPASt1OeED1I25Epn2WxzOx8OI/HC zYO6g4H1wPdwo/OU1gywl2elajsvMg4Byqsc74ewvSOD81vNcB4YU+ZUew3A5X5UIs0CBxZbRVrHP +hRszcFRfEwtFFLLDUwUI6p9Onhr1stDmc1rGNtWUG+xm0329Ht7G8N3aWq795EnFWKrgxHHBQd8Y 8946bG+kjaX8KPHr8UlSX6aj8DW8Lig==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i05zW-0002NU-Ef; Tue, 20 Aug 2019 15:24:10 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i05zT-0002MP-1h for linux-arm-kernel@lists.infradead.org; Tue, 20 Aug 2019 15:24:08 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 9B9B4200404; Tue, 20 Aug 2019 17:24:03 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 8D4162002A9; Tue, 20 Aug 2019 17:24:03 +0200 (CEST) Received: from fsr-ub1864-112.ea.freescale.net (fsr-ub1864-112.ea.freescale.net [10.171.82.98]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 023F820612; Tue, 20 Aug 2019 17:24:02 +0200 (CEST) From: Leonard Crestez To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi , =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= Subject: [PATCH v3 0/2] PM / devfreq: Add dev_pm_qos support Date: Tue, 20 Aug 2019 18:23:59 +0300 Message-Id: X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190820_082407_226738_58710E4F X-CRM114-Status: UNSURE ( 6.45 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jacky Bai , Saravana Kannan , linux-pm@vger.kernel.org, Viresh Kumar , Krzysztof Kozlowski , Alexandre Bailon , Georgi Djakov , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add dev_pm_qos notifies to devfreq core in order to support frequency limits via the dev_pm_qos_add_request. Unlike the rest of devfreq the dev_pm_qos frequency is measured in Khz, this is consistent with current dev_pm_qos usage for cpufreq and allows frequencies above 2Ghz (pm_qos expresses limits as s32). Like with cpufreq the handling of min_freq/max_freq is moved to the dev_pm_qos mechanism and this decreases the precision of the sysfs entries. Signed-off-by: Leonard Crestez --- Changes since v2: * Handle sysfs via dev_pm_qos (in separate patch) * Add locking to {min,max}_freq_show * Fix checkpatch issues (long lines etc) Link to v2: https://patchwork.kernel.org/patch/11084279/ Changes since v1: * Add doxygen comments for min_nb/max_nb * Remove notifiers on error/cleanup paths. Keep gotos simple by relying on dev_pm_qos_remove_notifier ignoring notifiers which were not added. Link to v1: https://patchwork.kernel.org/patch/11078475/ Leonard Crestez (2): PM / devfreq: Add dev_pm_qos support PM / devfreq: Use dev_pm_qos for sysfs min/max_freq drivers/devfreq/devfreq.c | 170 +++++++++++++++++++++++++++----------- include/linux/devfreq.h | 14 +++- 2 files changed, 131 insertions(+), 53 deletions(-)