From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756501Ab3GYQeK (ORCPT ); Thu, 25 Jul 2013 12:34:10 -0400 Received: from mailout1.samsung.com ([203.254.224.24]:41208 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754591Ab3GYQeB (ORCPT ); Thu, 25 Jul 2013 12:34:01 -0400 X-AuditID: cbfee61a-b7f196d000007dfa-89-51f153776bdf From: Lukasz Majewski To: Viresh Kumar , "Rafael J. Wysocki" , Zhang Rui , Eduardo Valentin Cc: "cpufreq@vger.kernel.org" , Linux PM list , Jonghwa Lee , Lukasz Majewski , Lukasz Majewski , linux-kernel , Bartlomiej Zolnierkiewicz , Daniel Lezcano , Kukjin Kim , Myungjoo Ham , durgadoss.r@intel.com Subject: [PATCH v6 1/8] cpufreq: Store cpufreq policies in a list Date: Thu, 25 Jul 2013 18:33:24 +0200 Message-id: <1374770011-22171-2-git-send-email-l.majewski@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1374770011-22171-1-git-send-email-l.majewski@samsung.com> References: <1370502472-7249-1-git-send-email-l.majewski@samsung.com> <1374770011-22171-1-git-send-email-l.majewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCLMWRmVeSWpSXmKPExsVy+t9jQd3y4I+BBvvvmlhsnLGe1eJp0w92 i3mfZS36fl5htliz/yeTRefZJ8wWvQuuslm8ecRt8ebhZkaLy7vmsFl87j3CaHG7cQWbRf/C XiaLJw/72Cw2fvVw4PdYvOclk8eda3vYPNZNe8vs0bdlFaPHo8UtjB7Hb2xn8vi8SS6APYrL JiU1J7MstUjfLoEr4/ttt4LvQhUX309kbGBsFuhi5OSQEDCRWPOsgxnCFpO4cG89WxcjF4eQ wHRGiX9/3jFDOF1MEns+LWQCqWIT0JP4fPcpmC0iMIdR4s5Rd5AiZoEHzBKLv39hBEkICzhK tO+/DlbEIqAq0fjmNZjNK+Amcad3JiPEOnmJp/f72EBsTgF3iQmTpzBCbGsCWn3jLvMERt4F jAyrGEVTC5ILipPScw31ihNzi0vz0vWS83M3MYLD9pnUDsaVDRaHGAU4GJV4eBWcPgYKsSaW FVfmHmKU4GBWEuE1twQK8aYkVlalFuXHF5XmpBYfYpTmYFES5z3Qah0oJJCeWJKanZpakFoE k2Xi4JRqYDRp+PmgfZaAWHqYwD+LRKbuQOvr18L/3v3//PgkM5MSG13XQ4L7t/yoO1LS9Uxo fULt1+KY9HjHU5W/rv/xtvV7cnWlZJhWwmTVLVxm/koqJQbXxU71hxh9SH9zP/6A5OTgE+Ve Wy7eqFF+O/Waktac9TU1uaetnrAX75p85UZy4oGKHZMXVyixFGckGmoxFxUnAgB9fmweVwIA AA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Policies available in a cpufreq framework are now linked together. They are accessible via cpufreq_policy_list defined at cpufreq core. Signed-off-by: Lukasz Majewski Signed-off-by: Myungjoo Ham --- Changes for v6: - Move policy list entry delete code to __cpufreq_remove_dev() - Protect operations on cpufreq_policy_list elements with lock Changes for v5: - Call list_add() only when device successfully added Changes for v4: - New patch drivers/cpufreq/cpufreq.c | 9 +++++++++ include/linux/cpufreq.h | 1 + 2 files changed, 10 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 0937b8d..172a25e 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -46,6 +46,7 @@ static struct cpufreq_driver *cpufreq_driver; static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data); static DEFINE_RWLOCK(cpufreq_driver_lock); static DEFINE_MUTEX(cpufreq_governor_lock); +static LIST_HEAD(cpufreq_policy_list); #ifdef CONFIG_HOTPLUG_CPU /* This one keeps track of the previously set governor of a removed CPU */ @@ -1054,6 +1055,10 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) if (ret) goto err_out_unregister; + write_lock_irqsave(&cpufreq_driver_lock, flags); + list_add(&policy->policy_list, &cpufreq_policy_list); + write_unlock_irqrestore(&cpufreq_driver_lock, flags); + kobject_uevent(&policy->kobj, KOBJ_ADD); module_put(cpufreq_driver->owner); pr_debug("initialization complete\n"); @@ -1202,6 +1207,10 @@ static int __cpufreq_remove_dev(struct device *dev, if (cpufreq_driver->exit) cpufreq_driver->exit(data); + write_lock_irqsave(&cpufreq_driver_lock, flags); + list_del(&data->policy_list); + write_unlock_irqrestore(&cpufreq_driver_lock, flags); + free_cpumask_var(data->related_cpus); free_cpumask_var(data->cpus); kfree(data); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 90d5a15..d8e30fc 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -117,6 +117,7 @@ struct cpufreq_policy { struct cpufreq_real_policy user_policy; + struct list_head policy_list; struct kobject kobj; struct completion kobj_unregister; int transition_ongoing; /* Tracks transition status */ -- 1.7.10.4