From patchwork Mon Jan 2 09:10:59 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 89470 Delivered-To: patch@linaro.org Received: by 10.140.20.101 with SMTP id 92csp7498188qgi; Mon, 2 Jan 2017 01:13:08 -0800 (PST) X-Received: by 10.84.178.195 with SMTP id z61mr125772992plb.176.1483348388047; Mon, 02 Jan 2017 01:13:08 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u17si55668546plj.47.2017.01.02.01.13.07; Mon, 02 Jan 2017 01:13:08 -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=@linaro.org; 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 dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932609AbdABJNF (ORCPT + 25 others); Mon, 2 Jan 2017 04:13:05 -0500 Received: from mail-pf0-f171.google.com ([209.85.192.171]:35198 "EHLO mail-pf0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932318AbdABJLa (ORCPT ); Mon, 2 Jan 2017 04:11:30 -0500 Received: by mail-pf0-f171.google.com with SMTP id i88so72247520pfk.2 for ; Mon, 02 Jan 2017 01:11:30 -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 :in-reply-to:references; bh=rMVbl2vWVUkg801BmkVdfcrFPGJ/P8J6B9JvUXojxEo=; b=NBv8h47yYt+DxljiZOUu3eJyX1t3V+sINYL33t21T/sOHH0zuUwidJN4B7qDaXpoyK IAYu5Am08473PGg0rLvmQENOwoj79d3aVpdBQGbGHkjQe8c8XuDCE+RiZDo8RNa4Pn60 G6hclysday4JLHaTSy04vrI6qw8NjFOeF2YwE= 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:in-reply-to:references; bh=rMVbl2vWVUkg801BmkVdfcrFPGJ/P8J6B9JvUXojxEo=; b=L6mo/JOwzdLKEbhc9DMcz4D+8hDusdPqqXnAItfvXBGgh7yM05l64cCNMVgUaqMmYk NeQIqKJwcj25iEMLAPrDtm+0ubUXFPP79i5LYxeYbgVD1HuJ6bo/pIz7LgQ8Hy4iIvO5 TPf5VSFlGJDj9ZNVX0bU9yDsOFap9KzKVTKZfxG5iOD9lzSpve5e24hNhqeGnONo41Dx EinEazmzK9t4kFj/PqHZkFMI4wXdHP6osyEbhDOHR6uNxjDZol23CcnYScVefijhh8AU CPFeS4RR84oTRrOpcUOESustEhr1VCLYfRG1DSfbB9Qw5mXPtaCgA2YFO1n+O1vXEws8 gtuQ== X-Gm-Message-State: AIkVDXKj3R8UqkMba8ZiROg04QCwJ/fRSE42Dzya+f0de22hPHYjC8l3moS2nx5Jq6JpBDOb X-Received: by 10.84.169.169 with SMTP id h38mr124340631plb.48.1483348290159; Mon, 02 Jan 2017 01:11:30 -0800 (PST) Received: from localhost ([122.172.43.83]) by smtp.gmail.com with ESMTPSA id t67sm130458552pfg.13.2017.01.02.01.11.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Jan 2017 01:11:29 -0800 (PST) From: Viresh Kumar To: Rafael Wysocki , Viresh Kumar , Nishanth Menon , Stephen Boyd Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Vincent Guittot , Viresh Kumar Subject: [PATCH V3 05/10] PM / OPP: Add light weight _opp_free() routine Date: Mon, 2 Jan 2017 14:40:59 +0530 Message-Id: <98f9e8c0d56d308b880292301209604f1ab2af68.1483348138.git.viresh.kumar@linaro.org> X-Mailer: git-send-email 2.7.1.410.g6faf27b In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The OPPs which are never successfully added using _opp_add() are not required to be freed with the _opp_remove() routine, as a simple kfree() is enough for them. Introduce a new light weight routine _opp_free(), which will do that. That also helps us removing the 'notify' parameter to _opp_remove(), which isn't required anymore. Note that _opp_free() contains a call to _remove_opp_table() as the OPP table might have been added for this very OPP only. The _remove_opp_table() routine returns quickly if there are more OPPs in the table. This will be simplified in later patches though. Signed-off-by: Viresh Kumar Reviewed-by: Stephen Boyd --- drivers/base/power/opp/core.c | 20 +++++++++++--------- drivers/base/power/opp/of.c | 2 +- drivers/base/power/opp/opp.h | 2 +- 3 files changed, 13 insertions(+), 11 deletions(-) -- 2.7.1.410.g6faf27b diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c index 422482575954..ea5b90e0882c 100644 --- a/drivers/base/power/opp/core.c +++ b/drivers/base/power/opp/core.c @@ -929,6 +929,12 @@ static void _remove_opp_table(struct opp_table *opp_table) _kfree_device_rcu); } +void _opp_free(struct dev_pm_opp *opp, struct opp_table *opp_table) +{ + kfree(opp); + _remove_opp_table(opp_table); +} + /** * _kfree_opp_rcu() - Free OPP RCU handler * @head: RCU head @@ -944,7 +950,6 @@ static void _kfree_opp_rcu(struct rcu_head *head) * _opp_remove() - Remove an OPP from a table definition * @opp_table: points back to the opp_table struct this opp belongs to * @opp: pointer to the OPP to remove - * @notify: OPP_EVENT_REMOVE notification should be sent or not * * This function removes an opp definition from the opp table. * @@ -952,16 +957,13 @@ static void _kfree_opp_rcu(struct rcu_head *head) * It is assumed that the caller holds required mutex for an RCU updater * strategy. */ -void _opp_remove(struct opp_table *opp_table, struct dev_pm_opp *opp, - bool notify) +static void _opp_remove(struct opp_table *opp_table, struct dev_pm_opp *opp) { /* * Notify the changes in the availability of the operable * frequency/voltage list. */ - if (notify) - srcu_notifier_call_chain(&opp_table->srcu_head, - OPP_EVENT_REMOVE, opp); + srcu_notifier_call_chain(&opp_table->srcu_head, OPP_EVENT_REMOVE, opp); opp_debug_remove_one(opp); list_del_rcu(&opp->node); call_srcu(&opp_table->srcu_head.srcu, &opp->rcu_head, _kfree_opp_rcu); @@ -1008,7 +1010,7 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq) goto unlock; } - _opp_remove(opp_table, opp, true); + _opp_remove(opp_table, opp); unlock: mutex_unlock(&opp_table_lock); } @@ -1200,7 +1202,7 @@ int _opp_add_v1(struct device *dev, unsigned long freq, long u_volt, return 0; free_opp: - _opp_remove(opp_table, new_opp, false); + _opp_free(new_opp, opp_table); unlock: mutex_unlock(&opp_table_lock); return ret; @@ -1912,7 +1914,7 @@ void _dev_pm_opp_remove_table(struct device *dev, bool remove_all) /* Free static OPPs */ list_for_each_entry_safe(opp, tmp, &opp_table->opp_list, node) { if (remove_all || !opp->dynamic) - _opp_remove(opp_table, opp, true); + _opp_remove(opp_table, opp); } } else { _remove_opp_dev(_find_opp_dev(dev, opp_table), opp_table); diff --git a/drivers/base/power/opp/of.c b/drivers/base/power/opp/of.c index c8fe815774ff..67c9eeded4e1 100644 --- a/drivers/base/power/opp/of.c +++ b/drivers/base/power/opp/of.c @@ -362,7 +362,7 @@ static int _opp_add_static_v2(struct device *dev, struct device_node *np) return 0; free_opp: - _opp_remove(opp_table, new_opp, false); + _opp_free(new_opp, opp_table); unlock: mutex_unlock(&opp_table_lock); return ret; diff --git a/drivers/base/power/opp/opp.h b/drivers/base/power/opp/opp.h index 0f23a1059605..334f7570df32 100644 --- a/drivers/base/power/opp/opp.h +++ b/drivers/base/power/opp/opp.h @@ -194,8 +194,8 @@ struct opp_table *_find_opp_table(struct device *dev); struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table); void _dev_pm_opp_remove_table(struct device *dev, bool remove_all); struct dev_pm_opp *_opp_allocate(struct device *dev, struct opp_table **opp_table); +void _opp_free(struct dev_pm_opp *opp, struct opp_table *opp_table); int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table); -void _opp_remove(struct opp_table *opp_table, struct dev_pm_opp *opp, bool notify); int _opp_add_v1(struct device *dev, unsigned long freq, long u_volt, bool dynamic); void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, bool of);