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authorViresh Kumar <viresh.kumar@linaro.org>2013-01-31 18:28:02 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-02-02 01:02:44 +0100
commit4447266b842d27f77b017a59eb9dc38ad7b299f1 (patch)
treef8ae835b7ecee18948afabd75633ea7676b6a4ac /drivers/cpufreq/cpufreq_ondemand.c
parentcpufreq: governors: Get rid of dbs_data->enable field (diff)
downloadlinux-4447266b842d27f77b017a59eb9dc38ad7b299f1.tar.xz
linux-4447266b842d27f77b017a59eb9dc38ad7b299f1.zip
cpufreq: governors: Remove code redundancy between governors
With the inclusion of following patches: 9f4eb10 cpufreq: conservative: call dbs_check_cpu only when necessary 772b4b1 cpufreq: ondemand: call dbs_check_cpu only when necessary code redundancy between the conservative and ondemand governors is introduced again, so get rid of it. [rjw: Changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Fabio Baltieri <fabio.baltieri@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq_ondemand.c')
-rw-r--r--drivers/cpufreq/cpufreq_ondemand.c77
1 files changed, 23 insertions, 54 deletions
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 75efd5ee00f8..f38b8da60128 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -216,75 +216,44 @@ 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)
+static void od_dbs_timer(struct work_struct *work)
{
+ struct delayed_work *dw = to_delayed_work(work);
+ struct od_cpu_dbs_info_s *dbs_info =
+ container_of(work, struct od_cpu_dbs_info_s, cdbs.work.work);
unsigned int cpu = dbs_info->cdbs.cur_policy->cpu;
- int delay, sample_type = dbs_info->sample_type;
+ struct od_cpu_dbs_info_s *core_dbs_info = &per_cpu(od_cpu_dbs_info,
+ cpu);
+ int delay, sample_type = core_dbs_info->sample_type;
+ bool eval_load;
+
+ mutex_lock(&core_dbs_info->cdbs.timer_mutex);
+ eval_load = need_load_eval(&core_dbs_info->cdbs,
+ od_tuners.sampling_rate);
/* Common NORMAL_SAMPLE setup */
- dbs_info->sample_type = OD_NORMAL_SAMPLE;
+ core_dbs_info->sample_type = OD_NORMAL_SAMPLE;
if (sample_type == OD_SUB_SAMPLE) {
- delay = dbs_info->freq_lo_jiffies;
- if (sample)
- __cpufreq_driver_target(dbs_info->cdbs.cur_policy,
- dbs_info->freq_lo,
+ delay = core_dbs_info->freq_lo_jiffies;
+ if (eval_load)
+ __cpufreq_driver_target(core_dbs_info->cdbs.cur_policy,
+ core_dbs_info->freq_lo,
CPUFREQ_RELATION_H);
} else {
- if (sample)
+ if (eval_load)
dbs_check_cpu(&od_dbs_data, cpu);
- if (dbs_info->freq_lo) {
+ if (core_dbs_info->freq_lo) {
/* Setup timer for SUB_SAMPLE */
- dbs_info->sample_type = OD_SUB_SAMPLE;
- delay = dbs_info->freq_hi_jiffies;
+ core_dbs_info->sample_type = OD_SUB_SAMPLE;
+ delay = core_dbs_info->freq_hi_jiffies;
} else {
delay = delay_for_sampling_rate(od_tuners.sampling_rate
- * dbs_info->rate_mult);
+ * core_dbs_info->rate_mult);
}
}
schedule_delayed_work_on(smp_processor_id(), dw, delay);
-}
-
-static void od_timer_coordinated(struct od_cpu_dbs_info_s *dbs_info_local,
- struct delayed_work *dw)
-{
- struct od_cpu_dbs_info_s *dbs_info;
- ktime_t time_now;
- s64 delta_us;
- bool sample = true;
-
- /* use leader CPU's dbs_info */
- 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();
- delta_us = ktime_us_delta(time_now, dbs_info->cdbs.time_stamp);
-
- /* Do nothing if we recently have sampled */
- if (delta_us < (s64)(od_tuners.sampling_rate / 2))
- sample = false;
- else
- dbs_info->cdbs.time_stamp = time_now;
-
- od_timer_update(dbs_info, sample, dw);
- mutex_unlock(&dbs_info->cdbs.timer_mutex);
-}
-
-static void od_dbs_timer(struct work_struct *work)
-{
- struct delayed_work *dw = to_delayed_work(work);
- struct od_cpu_dbs_info_s *dbs_info =
- container_of(work, struct od_cpu_dbs_info_s, cdbs.work.work);
-
- if (policy_is_shared(dbs_info->cdbs.cur_policy)) {
- od_timer_coordinated(dbs_info, dw);
- } else {
- mutex_lock(&dbs_info->cdbs.timer_mutex);
- od_timer_update(dbs_info, true, dw);
- mutex_unlock(&dbs_info->cdbs.timer_mutex);
- }
+ mutex_unlock(&core_dbs_info->cdbs.timer_mutex);
}
/************************** sysfs interface ************************/