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cpufreq: governor: Symmetrize cpu_dbs_info initialization and cleanup 

Make the initialization of struct cpu_dbs_info objects in
alloc_policy_dbs_info() and the code that cleans them up in
free_policy_dbs_info() more symmetrical.  In particular,
set/clear the update_util.func field in those functions along
with the policy_dbs field.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
hifive-unleashed-5.1
Rafael J. Wysocki 2016-02-07 16:25:02 +01:00
parent bc505475b8
commit cea6a9e772
1 changed files with 13 additions and 8 deletions
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21
drivers/cpufreq/cpufreq_governor.c
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@ -304,14 +304,18 @@ static struct policy_dbs_info *alloc_policy_dbs_info(struct cpufreq_policy *poli
if (!policy_dbs)
return NULL;
/* Set policy_dbs for all CPUs, online+offline */
for_each_cpu(j, policy->related_cpus)
gov->get_cpu_cdbs(j)->policy_dbs = policy_dbs;
mutex_init(&policy_dbs->timer_mutex);
atomic_set(&policy_dbs->skip_work, 0);
init_irq_work(&policy_dbs->irq_work, dbs_irq_work);
INIT_WORK(&policy_dbs->work, dbs_work_handler);
/* 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);
j_cdbs->policy_dbs = policy_dbs;
j_cdbs->update_util.func = dbs_update_util_handler;
}
return policy_dbs;
}
@ -324,9 +328,12 @@ static void free_policy_dbs_info(struct cpufreq_policy *policy,
mutex_destroy(&policy_dbs->timer_mutex);
for_each_cpu(j, policy->cpus)
gov->get_cpu_cdbs(j)->policy_dbs = NULL;
for_each_cpu(j, policy->related_cpus) {
struct cpu_dbs_info *j_cdbs = gov->get_cpu_cdbs(j);
j_cdbs->policy_dbs = NULL;
j_cdbs->update_util.func = NULL;
}
kfree(policy_dbs);
}
@ -477,8 +484,6 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy)
if (ignore_nice)
j_cdbs->prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
j_cdbs->update_util.func = dbs_update_util_handler;
}
policy_dbs->policy = policy;