From patchwork Thu Feb 21 11:29:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 10823801 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 41BA71575 for ; Thu, 21 Feb 2019 11:30:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3030430731 for ; Thu, 21 Feb 2019 11:30:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 22A493079A; Thu, 21 Feb 2019 11:30:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 82FAA30731 for ; Thu, 21 Feb 2019 11:30:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727543AbfBULaA (ORCPT ); Thu, 21 Feb 2019 06:30:00 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:45378 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726839AbfBUL3u (ORCPT ); Thu, 21 Feb 2019 06:29:50 -0500 Received: by mail-pf1-f195.google.com with SMTP id v21so10614010pfm.12 for ; Thu, 21 Feb 2019 03:29:49 -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 :mime-version:content-transfer-encoding; bh=+jNp0/kQ8orVa0y/ZTjJoci/OQMHHtlr8yMXafqVnuQ=; b=taN2BHoNlTS9R8Ar3MdBm4HB3aowZErPyP7/4h65JHVFDemrSVuXSFjRvckVJVqyml zSRW6EEjrqv6XsTYK6kdgmXO+r1n+WH1ENPzwNTxXlwpYaNAyRhgv/an/bspQNdOOpg6 AsWnOg62UoV/Kwfm4CBGPY3aFEbOJxcIdsZuteEinJE9vsYYkazoVWSKR+UhmupsmFDr 8vKCnPOuyENFmZdj8jq+r0lk2a7zYejJy7kvTykBrYmCg4J5b3AuR008t76sU5sb6470 M/iYdLZSsaiNrTzFgAG6g8TVCijfKKUoUWvRozkJssljx2okShip3dNSbet36S2vOhRW CJxA== 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:mime-version:content-transfer-encoding; bh=+jNp0/kQ8orVa0y/ZTjJoci/OQMHHtlr8yMXafqVnuQ=; b=hdAHjF6SPdM8dGwqHcPDyQMghVMvliigI1CN73+82gzTWBvjtaxPiQopFfl/SL2XbT CD7Nw7nlDDSVGCbubQe8+nA1itzlL/qXiUuXtDxWG8JxO4cz60qdfnK9r/flVx2G2UNz G0C2Qj/1xR8N0sOtTql6Or2LZjcrCIQs/ziP6gJlcHsmCjvuZ/DBvxBk8AvlXAO7/8PW +CRCbwS0m+yHZFfJcbO3aFLUHWe5hMV36DS7lZa1JXXKJSGffQDNKgAt/v7CzCsSiwWd 4zq5OIldc1Pkl7mX1UNaCsTgfNPzwGXaW3vMElHUC5axjwxpMTK/iZribuEWkiOjKDc0 43zQ== X-Gm-Message-State: AHQUAua7x8Bf0YmJ61BC8ayXa8F1MdgsOKMkcK/zxofAumjwvaUK2t8a ca0SsQXhc1+vtuwfmNLGJfQuKQ== X-Google-Smtp-Source: AHgI3IaTw2pSVhw2wJ/CIFP6Qd5cBFDzdOwkk4DjjmXtOczjkIylZ8bN4gpb3xsX6GBT6rrBhKHF+w== X-Received: by 2002:a63:d904:: with SMTP id r4mr34271668pgg.207.1550748589118; Thu, 21 Feb 2019 03:29:49 -0800 (PST) Received: from localhost ([122.172.102.63]) by smtp.gmail.com with ESMTPSA id u8sm5244342pfi.22.2019.02.21.03.29.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Feb 2019 03:29:48 -0800 (PST) From: Viresh Kumar To: Rafael Wysocki , Len Brown , Pavel Machek , Kevin Hilman , Ulf Hansson Cc: Viresh Kumar , linux-pm@vger.kernel.org, Vincent Guittot , mka@chromium.org, juri.lelli@gmail.com, Qais.Yousef@arm.com, linux-kernel@vger.kernel.org Subject: [PATCH V2 1/5] PM / QOS: Pass request type to dev_pm_qos_{add|remove}_notifier() Date: Thu, 21 Feb 2019 16:59:27 +0530 Message-Id: X-Mailer: git-send-email 2.21.0.rc0.269.g1a574e7a288b In-Reply-To: References: MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In order to use the same set of routines to register notifiers for different request types, update the existing dev_pm_qos_{add|remove}_notifier() routines with an additional parameter: request-type. For now, it only supports resume-latency request type. Signed-off-by: Viresh Kumar --- Documentation/power/pm_qos_interface.txt | 10 ++++++---- drivers/base/power/domain.c | 8 +++++--- drivers/base/power/qos.c | 14 ++++++++++++-- include/linux/pm_qos.h | 12 ++++++++---- 4 files changed, 31 insertions(+), 13 deletions(-) diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index 19c5f7b1a7ba..ec7d662d1707 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -164,12 +164,14 @@ directory. Notification mechanisms: The per-device PM QoS framework has a per-device notification tree. -int dev_pm_qos_add_notifier(device, notifier): -Adds a notification callback function for the device. +int dev_pm_qos_add_notifier(device, notifier, type): +Adds a notification callback function for the device for a particular request +type. + The callback is called when the aggregated value of the device constraints list -is changed (for resume latency device PM QoS only). +is changed. -int dev_pm_qos_remove_notifier(device, notifier): +int dev_pm_qos_remove_notifier(device, notifier, type): Removes the notification callback function for the device. diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 2c334c01fc43..d8c37945a26d 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1486,7 +1486,8 @@ static int genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, if (ret) genpd_free_dev_data(dev, gpd_data); else - dev_pm_qos_add_notifier(dev, &gpd_data->nb); + dev_pm_qos_add_notifier(dev, &gpd_data->nb, + DEV_PM_QOS_RESUME_LATENCY); return ret; } @@ -1519,7 +1520,8 @@ static int genpd_remove_device(struct generic_pm_domain *genpd, pdd = dev->power.subsys_data->domain_data; gpd_data = to_gpd_data(pdd); - dev_pm_qos_remove_notifier(dev, &gpd_data->nb); + dev_pm_qos_remove_notifier(dev, &gpd_data->nb, + DEV_PM_QOS_RESUME_LATENCY); genpd_lock(genpd); @@ -1546,7 +1548,7 @@ static int genpd_remove_device(struct generic_pm_domain *genpd, out: genpd_unlock(genpd); - dev_pm_qos_add_notifier(dev, &gpd_data->nb); + dev_pm_qos_add_notifier(dev, &gpd_data->nb, DEV_PM_QOS_RESUME_LATENCY); return ret; } diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 3382542b39b7..49672f9dc8c4 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -471,6 +471,7 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_remove_request); * * @dev: target device for the constraint * @notifier: notifier block managed by caller. + * @type: request type. * * Will register the notifier into a notification chain that gets called * upon changes to the target value for the device. @@ -478,10 +479,14 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_remove_request); * If the device's constraints object doesn't exist when this routine is called, * it will be created (or error code will be returned if that fails). */ -int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier) +int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier, + enum dev_pm_qos_req_type type) { int ret = 0; + if (WARN_ON(type != DEV_PM_QOS_RESUME_LATENCY)) + return -EINVAL; + mutex_lock(&dev_pm_qos_mtx); if (IS_ERR(dev->power.qos)) @@ -504,15 +509,20 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_add_notifier); * * @dev: target device for the constraint * @notifier: notifier block to be removed. + * @type: request type. * * Will remove the notifier from the notification chain that gets called * upon changes to the target value. */ int dev_pm_qos_remove_notifier(struct device *dev, - struct notifier_block *notifier) + struct notifier_block *notifier, + enum dev_pm_qos_req_type type) { int retval = 0; + if (WARN_ON(type != DEV_PM_QOS_RESUME_LATENCY)) + return -EINVAL; + mutex_lock(&dev_pm_qos_mtx); /* Silently return if the constraints object is not present. */ diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 6ea1ae373d77..1f4d456e8fff 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -146,9 +146,11 @@ int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); int dev_pm_qos_remove_request(struct dev_pm_qos_request *req); int dev_pm_qos_add_notifier(struct device *dev, - struct notifier_block *notifier); + struct notifier_block *notifier, + enum dev_pm_qos_req_type type); int dev_pm_qos_remove_notifier(struct device *dev, - struct notifier_block *notifier); + struct notifier_block *notifier, + enum dev_pm_qos_req_type type); void dev_pm_qos_constraints_init(struct device *dev); void dev_pm_qos_constraints_destroy(struct device *dev); int dev_pm_qos_add_ancestor_request(struct device *dev, @@ -202,10 +204,12 @@ static inline int dev_pm_qos_update_request(struct dev_pm_qos_request *req, static inline int dev_pm_qos_remove_request(struct dev_pm_qos_request *req) { return 0; } static inline int dev_pm_qos_add_notifier(struct device *dev, - struct notifier_block *notifier) + struct notifier_block *notifier, + enum dev_pm_qos_req_type type); { return 0; } static inline int dev_pm_qos_remove_notifier(struct device *dev, - struct notifier_block *notifier) + struct notifier_block *notifier, + enum dev_pm_qos_req_type type) { return 0; } static inline void dev_pm_qos_constraints_init(struct device *dev) {