From mboxrd@z Thu Jan 1 00:00:00 1970 From: Viresh Kumar Subject: [PATCH V2 06/11] cpufreq: Store cpufreq policies in a list Date: Tue, 6 Aug 2013 22:53:08 +0530 Message-ID: <614e2013bbd3833cc17d0a0a1d49cd11d43cf1d3.1375809311.git.viresh.kumar@linaro.org> References: Return-path: Received: from mail-pa0-f52.google.com ([209.85.220.52]:49474 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756478Ab3HFRYU (ORCPT ); Tue, 6 Aug 2013 13:24:20 -0400 Received: by mail-pa0-f52.google.com with SMTP id kq13so1020438pab.11 for ; Tue, 06 Aug 2013 10:24:20 -0700 (PDT) In-Reply-To: In-Reply-To: References: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: rjw@sisk.pl Cc: linaro-kernel@lists.linaro.org, patches@linaro.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, srivatsa.bhat@linux.vnet.ibm.com, Lukasz Majewski , Myungjoo Ham , Viresh Kumar From: Lukasz Majewski 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 Signed-off-by: Viresh Kumar --- drivers/cpufreq/cpufreq.c | 11 +++++++++++ include/linux/cpufreq.h | 1 + 2 files changed, 12 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9e83d91..f5999c4 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -40,6 +40,7 @@ static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data); static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data_fallback); 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 */ @@ -964,6 +965,12 @@ err_free_policy: static void cpufreq_policy_free(struct cpufreq_policy *policy) { + unsigned long flags; + + write_lock_irqsave(&cpufreq_driver_lock, flags); + list_del(&policy->policy_list); + write_unlock_irqrestore(&cpufreq_driver_lock, flags); + free_cpumask_var(policy->related_cpus); free_cpumask_var(policy->cpus); kfree(policy); @@ -1077,6 +1084,10 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, ret = cpufreq_add_dev_interface(policy, dev); 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); } cpufreq_init_policy(policy); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 2920892..431a05d 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -82,6 +82,7 @@ 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 */ -- 1.7.12.rc2.18.g61b472e