cpufreq: Create for_each_policy()
To make code more readable and less error prone, lets create a helper macro for iterating over all active policies. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -31,6 +31,12 @@
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#include <linux/tick.h>
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#include <trace/events/power.h>
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/* Macros to iterate over lists */
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/* Iterate over online CPUs policies */
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static LIST_HEAD(cpufreq_policy_list);
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#define for_each_policy(__policy) \
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list_for_each_entry(__policy, &cpufreq_policy_list, policy_list)
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/**
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* The "cpufreq driver" - the arch- or hardware-dependent low
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* level driver of CPUFreq support, and its spinlock. This lock
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@ -41,7 +47,6 @@ static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
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static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data_fallback);
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static DEFINE_RWLOCK(cpufreq_driver_lock);
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DEFINE_MUTEX(cpufreq_governor_lock);
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static LIST_HEAD(cpufreq_policy_list);
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/* This one keeps track of the previously set governor of a removed CPU */
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static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
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@ -1113,7 +1118,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
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/* Check if this cpu was hot-unplugged earlier and has siblings */
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read_lock_irqsave(&cpufreq_driver_lock, flags);
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list_for_each_entry(policy, &cpufreq_policy_list, policy_list) {
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for_each_policy(policy) {
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if (cpumask_test_cpu(cpu, policy->related_cpus)) {
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read_unlock_irqrestore(&cpufreq_driver_lock, flags);
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ret = cpufreq_add_policy_cpu(policy, cpu, dev);
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@ -1647,7 +1652,7 @@ void cpufreq_suspend(void)
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pr_debug("%s: Suspending Governors\n", __func__);
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list_for_each_entry(policy, &cpufreq_policy_list, policy_list) {
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for_each_policy(policy) {
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if (__cpufreq_governor(policy, CPUFREQ_GOV_STOP))
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pr_err("%s: Failed to stop governor for policy: %p\n",
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__func__, policy);
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@ -1681,7 +1686,7 @@ void cpufreq_resume(void)
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pr_debug("%s: Resuming Governors\n", __func__);
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list_for_each_entry(policy, &cpufreq_policy_list, policy_list) {
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for_each_policy(policy) {
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if (cpufreq_driver->resume && cpufreq_driver->resume(policy))
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pr_err("%s: Failed to resume driver: %p\n", __func__,
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policy);
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@ -2324,7 +2329,7 @@ static int cpufreq_boost_set_sw(int state)
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struct cpufreq_policy *policy;
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int ret = -EINVAL;
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list_for_each_entry(policy, &cpufreq_policy_list, policy_list) {
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for_each_policy(policy) {
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freq_table = cpufreq_frequency_get_table(policy->cpu);
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if (freq_table) {
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ret = cpufreq_frequency_table_cpuinfo(policy,
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