From: Lukasz Majewski l.majewski@samsung.com
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 l.majewski@samsung.com Signed-off-by: Myungjoo Ham myungjoo.ham@samsung.com Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- 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 496e31c..4c3aef0 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -39,6 +39,7 @@ 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 */ @@ -963,6 +964,12 @@ 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); @@ -1076,6 +1083,10 @@ 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 9876712..d272fa4 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 */