From patchwork Thu Feb 21 11:29:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 158904 Delivered-To: patch@linaro.org Received: by 2002:a02:48:0:0:0:0:0 with SMTP id 69csp373151jaa; Thu, 21 Feb 2019 03:29:55 -0800 (PST) X-Google-Smtp-Source: AHgI3IZuu7gbEzuEzMz8VAIHiHYha6cb/4MCGNLH0nC+zLODsukt2N3xnLPT/RBM9RhJp1HVDiHR X-Received: by 2002:a62:6453:: with SMTP id y80mr39509348pfb.203.1550748595792; Thu, 21 Feb 2019 03:29:55 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1550748595; cv=none; d=google.com; s=arc-20160816; b=ABXRARq4V8rjNArqYrUXCVRT+NUErPcXjt9FORiwSNPadxqMDccnADcMmI72fCjlVI BUaVuqOUQUXqSlOYpQS9JBWJoBA/mmlQ3gIoPg0AxIQ3Qh9muPC2ea4ncH3g9jSv36H9 OCzPohfDgYS10uAj+4Fo2WmM4Dnf6eTpyLabkA7twZgC+zHcPYqc1jEMj0KYepvONuO9 jL0opD/HDqWYYCK1y19Td5pNabvwQy8kBRRgi0VVRGfGGSXIQmHnYYBno/0UasirAwbs CNvHYQrXv4nW5q6G0yY5caWU5b1ncWndN9XNR065fsJqK3iw9GUZ+WyODbrMntkWyGqm Y86A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=F3LLSRDQOqGMBHSWQuz4LBphwjqYjeDRnqRsCnlMxjs=; b=pEINjfzu5XdWGpT+CV2APZg3x7ZT9S0abFTTG3BTvklM8rTJ0RT4EnhmFxf58sgqsR CXx0m4sEXekBdz4JxBiIuCEEDSnN0F9kYI/ycCH770v5Ac8ypLdu4ZTgvXQyno0MHwxb X+bP5axFnDPX5vVH08pk/hIz8SKVO+qOZHOSsCCGRWzYfs9ikvRi0l6iBowJwtYnvwuh f/Xe7qQHGoS0Yeh1WtCU6ggjxlXOcVKpGK8sbKY9KHSNRIDREhavEhyRA74HuxgnT+7s 2clcg0DDfIvFGj/RmPGuwwdM8ZHkT5WBjJB4/9ffucTfIF6iDxfvhlGn8N9LOMAxoyuB YqUw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Lips2aEK; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 3si21435413plr.336.2019.02.21.03.29.55; Thu, 21 Feb 2019 03:29:55 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-pm-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=Lips2aEK; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-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 S1727332AbfBUL3y (ORCPT + 11 others); Thu, 21 Feb 2019 06:29:54 -0500 Received: from mail-pl1-f195.google.com ([209.85.214.195]:37241 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725820AbfBUL3x (ORCPT ); Thu, 21 Feb 2019 06:29:53 -0500 Received: by mail-pl1-f195.google.com with SMTP id q3so6665447pll.4 for ; Thu, 21 Feb 2019 03:29:53 -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=F3LLSRDQOqGMBHSWQuz4LBphwjqYjeDRnqRsCnlMxjs=; b=Lips2aEKIKK1upuax5qhmiKCJgKL1LmwUbdV2ZR/oYjvtu0xU/X+cH6gi5VFgepDbQ JL4mezqlDB3Fe967wMqevBiYFtCikh94TjVeXAz5BInuPBchESHQEvi19AGoFOh22Wzb q/l+RID/abLT0wMBXKa1XYzlXlmh7hg9vADcLN/K1sdclHx5R5Lyu6Qw1Isyp2jAMCpp IpMw6pzWKQgw1vEw+W5jmzcp01JnHIRhPk7k2mqWKrT8+Q9v9OllnX5DoiFEuIkKXzer NadrUK39mhkOfGUQ1nRqJ5eK/yCoQagwKBIIKixm5PZ1r8sY5TfwpSRXTXY3X67uJMl3 Jr2Q== 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=F3LLSRDQOqGMBHSWQuz4LBphwjqYjeDRnqRsCnlMxjs=; b=QSYiEyS2Bq0z9q3Z2QEpFHVlPtva35T+tebmSo7lZtHUKBYsoqyVUI2LPP/IlOX9Na fVgjol4JuUnYrJSL2VOL+aMaJMc/MFwiWjBAx2NKBrVo66y9BnKE4DUocLF/VoWkCGIA hYx8vijekrioGUmacFn4aAHoo1NqAmGgZdXE7YaqWlvjL7LxNNrU1AnybpskQZRLvgi/ utybVZ4BTthTZjbRQ0VmQ2Q+RAWSn3/JoFsaKlrqpMWzS0Kydbu2QtCmslFUcSW4NMUx aHBmNawnYmQZC1DsMwsy4C4KUexsJHwvQ3lVrpKP20y1/PLYJ2jkKRBHr7fPL7uaUEwn BtnQ== X-Gm-Message-State: AHQUAubIdbM2aQD0jE6ds9MumMdlRwv3lULFCiTDyOousysiRbfOZXhV WTHyp7pr4Tcl65aufCM1qLNLYg== X-Received: by 2002:a17:902:8f82:: with SMTP id z2mr3003556plo.163.1550748592835; Thu, 21 Feb 2019 03:29:52 -0800 (PST) Received: from localhost ([122.172.102.63]) by smtp.gmail.com with ESMTPSA id l64sm12733460pga.87.2019.02.21.03.29.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Feb 2019 03:29:52 -0800 (PST) From: Viresh Kumar To: Rafael Wysocki , Len Brown , Pavel Machek , Kevin Hilman , Ulf Hansson , Daniel Lezcano 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 2/5] PM / QOS: Pass request type to dev_pm_qos_read_value() Date: Thu, 21 Feb 2019 16:59:28 +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 In order to use dev_pm_qos_read_value(), and other internal routines to it, to read values for different QoS requests, pass request type as a parameter to these routines. For now, it only supports resume-latency request type. Signed-off-by: Viresh Kumar --- Documentation/power/pm_qos_interface.txt | 2 +- drivers/base/power/domain_governor.c | 4 +-- drivers/base/power/qos.c | 10 +++--- drivers/base/power/runtime.c | 2 +- drivers/cpuidle/governor.c | 2 +- include/linux/pm_qos.h | 41 +++++++++++++++++------- 6 files changed, 40 insertions(+), 21 deletions(-) -- 2.21.0.rc0.269.g1a574e7a288b diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index ec7d662d1707..cfcb1df39799 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -123,7 +123,7 @@ Will remove the element. After removal it will update the aggregate target and call the notification trees if the target was changed as a result of removing the request. -s32 dev_pm_qos_read_value(device): +s32 dev_pm_qos_read_value(device, type): Returns the aggregated value for a given device's constraints list. enum pm_qos_flags_status dev_pm_qos_flags(device, mask) diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c index 99896fbf18e4..c36925adba69 100644 --- a/drivers/base/power/domain_governor.c +++ b/drivers/base/power/domain_governor.c @@ -32,7 +32,7 @@ static int dev_update_qos_constraint(struct device *dev, void *data) * take its current PM QoS constraint (that's the only thing * known at this point anyway). */ - constraint_ns = dev_pm_qos_read_value(dev); + constraint_ns = dev_pm_qos_read_value(dev, DEV_PM_QOS_RESUME_LATENCY); constraint_ns *= NSEC_PER_USEC; } @@ -65,7 +65,7 @@ static bool default_suspend_ok(struct device *dev) td->constraint_changed = false; td->cached_suspend_ok = false; td->effective_constraint_ns = 0; - constraint_ns = __dev_pm_qos_read_value(dev); + constraint_ns = __dev_pm_qos_read_value(dev, DEV_PM_QOS_RESUME_LATENCY); spin_unlock_irqrestore(&dev->power.lock, flags); diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 49672f9dc8c4..fda7266970e9 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -96,27 +96,29 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_flags); /** * __dev_pm_qos_read_value - Get PM QoS constraint for a given device. * @dev: Device to get the PM QoS constraint value for. + * @type: QoS request type. * * This routine must be called with dev->power.lock held. */ -s32 __dev_pm_qos_read_value(struct device *dev) +s32 __dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type) { lockdep_assert_held(&dev->power.lock); - return dev_pm_qos_raw_read_value(dev); + return dev_pm_qos_raw_read_value(dev, type); } /** * dev_pm_qos_read_value - Get PM QoS constraint for a given device (locked). * @dev: Device to get the PM QoS constraint value for. + * @type: QoS request type. */ -s32 dev_pm_qos_read_value(struct device *dev) +s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type) { unsigned long flags; s32 ret; spin_lock_irqsave(&dev->power.lock, flags); - ret = __dev_pm_qos_read_value(dev); + ret = __dev_pm_qos_read_value(dev, type); spin_unlock_irqrestore(&dev->power.lock, flags); return ret; diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 04407d9f76fd..997cd420accc 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -267,7 +267,7 @@ static int rpm_check_suspend_allowed(struct device *dev) || (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME)) retval = -EAGAIN; - else if (__dev_pm_qos_read_value(dev) == 0) + else if (__dev_pm_qos_read_value(dev, DEV_PM_QOS_RESUME_LATENCY) == 0) retval = -EPERM; else if (dev->power.runtime_status == RPM_SUSPENDED) retval = 1; diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c index bb93e5cf6a4a..251d3ef4a1e5 100644 --- a/drivers/cpuidle/governor.c +++ b/drivers/cpuidle/governor.c @@ -109,7 +109,7 @@ int cpuidle_governor_latency_req(unsigned int cpu) { int global_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY); struct device *device = get_cpu_device(cpu); - int device_req = dev_pm_qos_raw_read_value(device); + int device_req = dev_pm_qos_raw_read_value(device, DEV_PM_QOS_RESUME_LATENCY); return device_req < global_req ? device_req : global_req; } diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 1f4d456e8fff..55814d48c39c 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -139,8 +139,8 @@ s32 pm_qos_read_value(struct pm_qos_constraints *c); #ifdef CONFIG_PM enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask); enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask); -s32 __dev_pm_qos_read_value(struct device *dev); -s32 dev_pm_qos_read_value(struct device *dev); +s32 __dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type); +s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type); int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value); int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); @@ -176,11 +176,19 @@ static inline s32 dev_pm_qos_requested_flags(struct device *dev) return dev->power.qos->flags_req->data.flr.flags; } -static inline s32 dev_pm_qos_raw_read_value(struct device *dev) +static inline s32 dev_pm_qos_raw_read_value(struct device *dev, + enum dev_pm_qos_req_type type) { - return IS_ERR_OR_NULL(dev->power.qos) ? - PM_QOS_RESUME_LATENCY_NO_CONSTRAINT : - pm_qos_read_value(&dev->power.qos->resume_latency); + struct dev_pm_qos *qos = dev->power.qos; + + switch (type) { + case DEV_PM_QOS_RESUME_LATENCY: + return IS_ERR_OR_NULL(qos) ? PM_QOS_RESUME_LATENCY_NO_CONSTRAINT + : pm_qos_read_value(&qos->resume_latency); + default: + WARN_ON(1); + return 0; + } } #else static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, @@ -189,10 +197,6 @@ static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, static inline enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask) { return PM_QOS_FLAGS_UNDEFINED; } -static inline s32 __dev_pm_qos_read_value(struct device *dev) - { return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } -static inline s32 dev_pm_qos_read_value(struct device *dev) - { return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } static inline int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, @@ -245,10 +249,23 @@ static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return 0; } -static inline s32 dev_pm_qos_raw_read_value(struct device *dev) + +static inline s32 dev_pm_qos_raw_read_value(struct device *dev, + enum dev_pm_qos_req_type type) { - return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; + switch type { + case DEV_PM_QOS_RESUME_LATENCY: + return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; + default: + WARN_ON(1); + return 0; + } } + +static inline s32 __dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type) + { return dev_pm_qos_raw_read_value(dev, type); } +static inline s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type) + { return dev_pm_qos_raw_read_value(dev, type); } #endif #endif