diff options
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 2 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.c | 6 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.h | 2 |
3 files changed, 8 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 50c5ea951..df1eea93a 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -49,7 +49,7 @@ static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data); static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor); #endif static DEFINE_RWLOCK(cpufreq_driver_lock); -static DEFINE_MUTEX(cpufreq_governor_lock); +DEFINE_MUTEX(cpufreq_governor_lock); /* * cpu_policy_rwsem is a per CPU reader-writer semaphore designed to cure diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index bc97a42ae..3dc94cc60 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -176,8 +176,9 @@ void gov_queue_work(struct dbs_data *dbs_data, struct cpufreq_policy *policy, { int i; + mutex_lock(&cpufreq_governor_lock); if (!policy->governor_enabled) - return; + goto out_unlock; if (!all_cpus) __gov_queue_work(smp_processor_id(), dbs_data, delay); @@ -185,6 +186,9 @@ void gov_queue_work(struct dbs_data *dbs_data, struct cpufreq_policy *policy, for_each_cpu(i, policy->cpus) __gov_queue_work(i, dbs_data, delay); } + +out_unlock: + mutex_unlock(&cpufreq_governor_lock); } EXPORT_SYMBOL_GPL(gov_queue_work); diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 59820a715..6f10c56b2 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -305,6 +305,8 @@ static ssize_t show_sampling_rate_min_gov_pol \ return sprintf(buf, "%u\n", dbs_data->min_sampling_rate); \ } +extern struct mutex cpufreq_governor_lock; + void dbs_check_cpu(struct dbs_data *dbs_data, int cpu); bool need_load_eval(struct cpu_dbs_common_info *cdbs, unsigned int sampling_rate); |