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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-07-18 09:00:59 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-07-21 02:12:01 +0300 |
| commit | 44152cb82d1ad6ae6f8b47c5437f6f1e65ca82c4 (patch) | |
| tree | d4a0d3058f60345d6ae6bee7fdcc881fe0df690b /drivers/cpufreq/cpufreq_conservative.c | |
| parent | 42994af63cd1aafc9289035cf621e501b08732e9 (diff) | |
| download | linux-44152cb82d1ad6ae6f8b47c5437f6f1e65ca82c4.tar.xz | |
cpufreq: governor: Keep single copy of information common to policy->cpus
Some information is common to all CPUs belonging to a policy, but are
kept on per-cpu basis. Lets keep that in another structure common to all
policy->cpus. That will make updates/reads to that less complex and less
error prone.
The memory for cpu_common_dbs_info is allocated/freed at INIT/EXIT, so
that it we don't reallocate it for STOP/START sequence. It will be also
be used (in next patch) while the governor is stopped and so must not be
freed that early.
Reviewed-and-tested-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq_conservative.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq_conservative.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index af47d322679e..d21c3cff9056 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -47,7 +47,7 @@ static inline unsigned int get_freq_target(struct cs_dbs_tuners *cs_tuners, static void cs_check_cpu(int cpu, unsigned int load) { struct cs_cpu_dbs_info_s *dbs_info = &per_cpu(cs_cpu_dbs_info, cpu); - struct cpufreq_policy *policy = dbs_info->cdbs.policy; + struct cpufreq_policy *policy = dbs_info->cdbs.shared->policy; struct dbs_data *dbs_data = policy->governor_data; struct cs_dbs_tuners *cs_tuners = dbs_data->tuners; @@ -106,22 +106,24 @@ 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.dwork.work); - unsigned int cpu = dbs_info->cdbs.policy->cpu; + struct cpufreq_policy *policy = dbs_info->cdbs.shared->policy; + unsigned int cpu = policy->cpu; struct cs_cpu_dbs_info_s *core_dbs_info = &per_cpu(cs_cpu_dbs_info, cpu); - struct dbs_data *dbs_data = dbs_info->cdbs.policy->governor_data; + struct dbs_data *dbs_data = policy->governor_data; struct cs_dbs_tuners *cs_tuners = dbs_data->tuners; int delay = delay_for_sampling_rate(cs_tuners->sampling_rate); bool modify_all = true; - mutex_lock(&core_dbs_info->cdbs.timer_mutex); - if (!need_load_eval(&core_dbs_info->cdbs, cs_tuners->sampling_rate)) + mutex_lock(&core_dbs_info->cdbs.shared->timer_mutex); + if (!need_load_eval(core_dbs_info->cdbs.shared, + cs_tuners->sampling_rate)) modify_all = false; else dbs_check_cpu(dbs_data, cpu); - gov_queue_work(dbs_data, dbs_info->cdbs.policy, delay, modify_all); - mutex_unlock(&core_dbs_info->cdbs.timer_mutex); + gov_queue_work(dbs_data, policy, delay, modify_all); + mutex_unlock(&core_dbs_info->cdbs.shared->timer_mutex); } static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val, @@ -135,7 +137,7 @@ static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val, if (!dbs_info->enable) return 0; - policy = dbs_info->cdbs.policy; + policy = dbs_info->cdbs.shared->policy; /* * we only care if our internally tracked freq moves outside the 'valid' |