cpufreq: governors: implement generic policy_is_shared

Implement a generic helper function policy_is_shared() to replace the
current dbs_sw_coordinated_cpus() at cpufreq level, so that it can be
used by code other than cpufreq governors.

Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 22f9b47..937bc28 100644 (file)
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -734,7 +734,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 #ifdef CONFIG_SMP
        dmi_check_system(sw_any_bug_dmi_table);
-       if (bios_with_sw_any_bug && cpumask_weight(policy->cpus) == 1) {
+       if (bios_with_sw_any_bug && !policy_is_shared(policy)) {
                policy->shared_type = CPUFREQ_SHARED_TYPE_ALL;
                cpumask_copy(policy->cpus, cpu_core_mask(cpu));
        }

diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 5d8e894..653fb06 100644 (file)
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -154,7 +154,7 @@ static void cs_dbs_timer(struct work_struct *work)
        struct cs_cpu_dbs_info_s *dbs_info = container_of(work,
                        struct cs_cpu_dbs_info_s, cdbs.work.work);
 
-       if (dbs_sw_coordinated_cpus(&dbs_info->cdbs)) {
+       if (policy_is_shared(dbs_info->cdbs.cur_policy)) {
                cs_timer_coordinated(dbs_info, dw);
        } else {
                mutex_lock(&dbs_info->cdbs.timer_mutex);

diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 46f96a4..67e235a 100644 (file)
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -161,14 +161,6 @@ void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
 }
 EXPORT_SYMBOL_GPL(dbs_check_cpu);
 
-bool dbs_sw_coordinated_cpus(struct cpu_dbs_common_info *cdbs)
-{
-       struct cpufreq_policy *policy = cdbs->cur_policy;
-
-       return cpumask_weight(policy->cpus) > 1;
-}
-EXPORT_SYMBOL_GPL(dbs_sw_coordinated_cpus);
-
 static inline void dbs_timer_init(struct dbs_data *dbs_data, int cpu,
                                  unsigned int sampling_rate)
 {

diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index aaf073d..b72e628 100644 (file)
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -172,7 +172,6 @@ static inline int delay_for_sampling_rate(unsigned int sampling_rate)
 
 u64 get_cpu_idle_time(unsigned int cpu, u64 *wall);
 void dbs_check_cpu(struct dbs_data *dbs_data, int cpu);
-bool dbs_sw_coordinated_cpus(struct cpu_dbs_common_info *cdbs);
 int cpufreq_governor_dbs(struct dbs_data *dbs_data,
                struct cpufreq_policy *policy, unsigned int event);
 #endif /* _CPUFREQ_GOVERNER_H */

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 1017b90..5ae84ff 100644 (file)
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -277,7 +277,7 @@ static void od_dbs_timer(struct work_struct *work)
        struct od_cpu_dbs_info_s *dbs_info =
                container_of(work, struct od_cpu_dbs_info_s, cdbs.work.work);
 
-       if (dbs_sw_coordinated_cpus(&dbs_info->cdbs)) {
+       if (policy_is_shared(dbs_info->cdbs.cur_policy)) {
                od_timer_coordinated(dbs_info, dw);
        } else {
                mutex_lock(&dbs_info->cdbs.timer_mutex);

diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index beef6b5..572124c 100644 (file)
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -185,7 +185,7 @@ static void cpufreq_stats_free_table(unsigned int cpu)
 static void cpufreq_stats_free_sysfs(unsigned int cpu)
 {
        struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
-       if (policy && (cpumask_weight(policy->cpus) == 1)) {
+       if (policy && !policy_is_shared(policy)) {
                pr_debug("%s: Free sysfs stat\n", __func__);
                sysfs_remove_group(&policy->kobj, &stats_attr_group);
        }

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 753b198..feb360c 100644 (file)
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -127,6 +127,11 @@ struct cpufreq_policy {
 #define CPUFREQ_SHARED_TYPE_ALL         (2) /* All dependent CPUs should set freq */
 #define CPUFREQ_SHARED_TYPE_ANY         (3) /* Freq can be set from any dependent CPU*/
 
+static inline bool policy_is_shared(struct cpufreq_policy *policy)
+{
+       return cpumask_weight(policy->cpus) > 1;
+}
+
 /******************** cpufreq transition notifiers *******************/
 
 #define CPUFREQ_PRECHANGE      (0)