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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-02-21 02:51:27 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-03-09 16:41:09 +0300
commit8c8f77fd0719a079450f59debed4f69ede825adb (patch)
tree6e1370e23065e3243f2677742ca479771e39e843 /drivers/cpufreq/cpufreq_governor.c
parent7d5a9956af4ccf7d5cc0cd1f8d27d1691321bfc6 (diff)
downloadlinux-8c8f77fd0719a079450f59debed4f69ede825adb.tar.xz
cpufreq: governor: Move per-CPU data to the common code
After previous changes there is only one piece of code in the ondemand governor making references to per-CPU data structures, but it can be easily modified to avoid doing that, so modify it accordingly and move the definition of per-CPU data used by the ondemand and conservative governors to the common code. Next, change that code to access the per-CPU data structures directly rather than via a governor callback. This causes the ->get_cpu_cdbs governor callback to become unnecessary, so drop it along with the macro and function definitions related to it. Finally, drop the definitions of struct od_cpu_dbs_info_s and struct cs_cpu_dbs_info_s that aren't necessary any more. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq/cpufreq_governor.c')
-rw-r--r--drivers/cpufreq/cpufreq_governor.c31
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 6cbc846e3981..75217b850d7b 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -22,6 +22,8 @@
#include "cpufreq_governor.h"
+static DEFINE_PER_CPU(struct cpu_dbs_info, cpu_dbs);
+
DEFINE_MUTEX(dbs_data_mutex);
EXPORT_SYMBOL_GPL(dbs_data_mutex);
@@ -82,7 +84,6 @@ EXPORT_SYMBOL_GPL(store_sampling_rate);
/**
* gov_update_cpu_data - Update CPU load data.
- * @gov: Governor whose data is to be updated.
* @dbs_data: Top-level governor data pointer.
*
* Update CPU load data for all CPUs in the domain governed by @dbs_data
@@ -91,7 +92,7 @@ EXPORT_SYMBOL_GPL(store_sampling_rate);
*
* Call under the @dbs_data mutex.
*/
-void gov_update_cpu_data(struct dbs_governor *gov, struct dbs_data *dbs_data)
+void gov_update_cpu_data(struct dbs_data *dbs_data)
{
struct policy_dbs_info *policy_dbs;
@@ -99,7 +100,7 @@ void gov_update_cpu_data(struct dbs_governor *gov, struct dbs_data *dbs_data)
unsigned int j;
for_each_cpu(j, policy_dbs->policy->cpus) {
- struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j);
+ struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j);
j_cdbs->prev_cpu_idle = get_cpu_idle_time(j, &j_cdbs->prev_cpu_wall,
dbs_data->io_is_busy);
@@ -164,7 +165,6 @@ static const struct sysfs_ops governor_sysfs_ops = {
unsigned int dbs_update(struct cpufreq_policy *policy)
{
- struct dbs_governor *gov = dbs_governor_of(policy);
struct policy_dbs_info *policy_dbs = policy->governor_data;
struct dbs_data *dbs_data = policy_dbs->dbs_data;
unsigned int ignore_nice = dbs_data->ignore_nice_load;
@@ -187,13 +187,11 @@ unsigned int dbs_update(struct cpufreq_policy *policy)
/* Get Absolute Load */
for_each_cpu(j, policy->cpus) {
- struct cpu_dbs_info *j_cdbs;
+ struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j);
u64 cur_wall_time, cur_idle_time;
unsigned int idle_time, wall_time;
unsigned int load;
- j_cdbs = gov->get_cpu_cdbs(j);
-
cur_idle_time = get_cpu_idle_time(j, &cur_wall_time, io_busy);
wall_time = cur_wall_time - j_cdbs->prev_cpu_wall;
@@ -268,14 +266,13 @@ void gov_set_update_util(struct policy_dbs_info *policy_dbs,
unsigned int delay_us)
{
struct cpufreq_policy *policy = policy_dbs->policy;
- struct dbs_governor *gov = dbs_governor_of(policy);
int cpu;
gov_update_sample_delay(policy_dbs, delay_us);
policy_dbs->last_sample_time = 0;
for_each_cpu(cpu, policy->cpus) {
- struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(cpu);
+ struct cpu_dbs_info *cdbs = &per_cpu(cpu_dbs, cpu);
cpufreq_set_update_util_data(cpu, &cdbs->update_util);
}
@@ -398,7 +395,7 @@ static struct policy_dbs_info *alloc_policy_dbs_info(struct cpufreq_policy *poli
/* Set policy_dbs for all CPUs, online+offline */
for_each_cpu(j, policy->related_cpus) {
- struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j);
+ struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j);
j_cdbs->policy_dbs = policy_dbs;
j_cdbs->update_util.func = dbs_update_util_handler;
@@ -406,17 +403,15 @@ static struct policy_dbs_info *alloc_policy_dbs_info(struct cpufreq_policy *poli
return policy_dbs;
}
-static void free_policy_dbs_info(struct cpufreq_policy *policy,
+static void free_policy_dbs_info(struct policy_dbs_info *policy_dbs,
struct dbs_governor *gov)
{
- struct cpu_dbs_info *cdbs = gov->get_cpu_cdbs(policy->cpu);
- struct policy_dbs_info *policy_dbs = cdbs->policy_dbs;
int j;
mutex_destroy(&policy_dbs->timer_mutex);
- for_each_cpu(j, policy->related_cpus) {
- struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j);
+ for_each_cpu(j, policy_dbs->policy->related_cpus) {
+ struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j);
j_cdbs->policy_dbs = NULL;
j_cdbs->update_util.func = NULL;
@@ -507,7 +502,7 @@ static int cpufreq_governor_init(struct cpufreq_policy *policy)
kfree(dbs_data);
free_policy_dbs_info:
- free_policy_dbs_info(policy, gov);
+ free_policy_dbs_info(policy_dbs, gov);
return ret;
}
@@ -538,7 +533,7 @@ static int cpufreq_governor_exit(struct cpufreq_policy *policy)
policy->governor_data = NULL;
}
- free_policy_dbs_info(policy, gov);
+ free_policy_dbs_info(policy_dbs, gov);
return 0;
}
@@ -561,7 +556,7 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy)
io_busy = dbs_data->io_is_busy;
for_each_cpu(j, policy->cpus) {
- struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j);
+ struct cpu_dbs_info *j_cdbs = &per_cpu(cpu_dbs, j);
unsigned int prev_load;
j_cdbs->prev_cpu_idle = get_cpu_idle_time(j, &j_cdbs->prev_cpu_wall, io_busy);