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authorFabio Baltieri <fabio.baltieri@linaro.org>2013-01-31 14:39:19 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-02-02 03:01:16 +0400
commit09dca5ae7531c9df379a2c2484a17438b9e947bc (patch)
tree859bbcfda0b5414c446bbc6c92955620ee9f6f62 /drivers
parent2624f90c16413990ecb0414400174a066319a9f5 (diff)
downloadlinux-09dca5ae7531c9df379a2c2484a17438b9e947bc.tar.xz
cpufreq: governors: fix misuse of cdbs.cpu
Fix governors code to set all cpu's cdbs->cpu to the the actual cpu id and use cur_policy->cpu istead of cdbs->cpu to track current governor's leader cpu. Reported-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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpufreq/cpufreq_conservative.c5
-rw-r--r--drivers/cpufreq/cpufreq_governor.c2
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c5
3 files changed, 7 insertions, 5 deletions
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 653fb0652412..c18a304b3a38 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -114,7 +114,7 @@ static void cs_check_cpu(int cpu, unsigned int load)
static void cs_timer_update(struct cs_cpu_dbs_info_s *dbs_info, bool sample,
struct delayed_work *dw)
{
- unsigned int cpu = dbs_info->cdbs.cpu;
+ unsigned int cpu = dbs_info->cdbs.cur_policy->cpu;
int delay = delay_for_sampling_rate(cs_tuners.sampling_rate);
if (sample)
@@ -132,7 +132,8 @@ static void cs_timer_coordinated(struct cs_cpu_dbs_info_s *dbs_info_local,
bool sample = true;
/* use leader CPU's dbs_info */
- dbs_info = &per_cpu(cs_cpu_dbs_info, dbs_info_local->cdbs.cpu);
+ dbs_info = &per_cpu(cs_cpu_dbs_info,
+ dbs_info_local->cdbs.cur_policy->cpu);
mutex_lock(&dbs_info->cdbs.timer_mutex);
time_now = ktime_get();
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 67e235acf43b..46f1c78bd16f 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -208,11 +208,11 @@ int cpufreq_governor_dbs(struct dbs_data *dbs_data,
mutex_lock(&dbs_data->mutex);
dbs_data->enable++;
- cpu_cdbs->cpu = cpu;
for_each_cpu(j, policy->cpus) {
struct cpu_dbs_common_info *j_cdbs;
j_cdbs = dbs_data->get_cpu_cdbs(j);
+ j_cdbs->cpu = j;
j_cdbs->cur_policy = policy;
j_cdbs->prev_cpu_idle = get_cpu_idle_time(j,
&j_cdbs->prev_cpu_wall);
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 5ae84ffeafb3..75efd5ee00f8 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -219,7 +219,7 @@ static void od_check_cpu(int cpu, unsigned int load_freq)
static void od_timer_update(struct od_cpu_dbs_info_s *dbs_info, bool sample,
struct delayed_work *dw)
{
- unsigned int cpu = dbs_info->cdbs.cpu;
+ unsigned int cpu = dbs_info->cdbs.cur_policy->cpu;
int delay, sample_type = dbs_info->sample_type;
/* Common NORMAL_SAMPLE setup */
@@ -255,7 +255,8 @@ static void od_timer_coordinated(struct od_cpu_dbs_info_s *dbs_info_local,
bool sample = true;
/* use leader CPU's dbs_info */
- dbs_info = &per_cpu(od_cpu_dbs_info, dbs_info_local->cdbs.cpu);
+ dbs_info = &per_cpu(od_cpu_dbs_info,
+ dbs_info_local->cdbs.cur_policy->cpu);
mutex_lock(&dbs_info->cdbs.timer_mutex);
time_now = ktime_get();