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Merge branch 'pm-cpufreq'

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* pm-cpufreq:
  cpufreq: schedutil: Don't skip freq update when limits change
  cpufreq: dev_pm_qos_update_request() can return 1 on success
This commit is contained in:
Rafael J. Wysocki 2019-08-16 14:24:51 +02:00
commit a3ee2477c4
2 changed files with 11 additions and 5 deletions
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2
drivers/cpufreq/cpufreq.c
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@ -2528,7 +2528,7 @@ static int cpufreq_boost_set_sw(int state)
}
ret = dev_pm_qos_update_request(policy->max_freq_req, policy->max);
if (ret)
if (ret < 0)
break;
}

14
kernel/sched/cpufreq_schedutil.c
View File

@ -40,6 +40,7 @@ struct sugov_policy {
struct task_struct *thread;
bool work_in_progress;
bool limits_changed;
bool need_freq_update;
};
@ -89,8 +90,11 @@ static bool sugov_should_update_freq(struct sugov_policy *sg_policy, u64 time)
!cpufreq_this_cpu_can_update(sg_policy->policy))
return false;
if (unlikely(sg_policy->need_freq_update))
if (unlikely(sg_policy->limits_changed)) {
sg_policy->limits_changed = false;
sg_policy->need_freq_update = true;
return true;
}
delta_ns = time - sg_policy->last_freq_update_time;
@ -437,7 +441,7 @@ static inline bool sugov_cpu_is_busy(struct sugov_cpu *sg_cpu) { return false; }
static inline void ignore_dl_rate_limit(struct sugov_cpu *sg_cpu, struct sugov_policy *sg_policy)
{
if (cpu_bw_dl(cpu_rq(sg_cpu->cpu)) > sg_cpu->bw_dl)
sg_policy->need_freq_update = true;
sg_policy->limits_changed = true;
}
static void sugov_update_single(struct update_util_data *hook, u64 time,
@ -457,7 +461,8 @@ static void sugov_update_single(struct update_util_data *hook, u64 time,
if (!sugov_should_update_freq(sg_policy, time))
return;
busy = sugov_cpu_is_busy(sg_cpu);
/* Limits may have changed, don't skip frequency update */
busy = !sg_policy->need_freq_update && sugov_cpu_is_busy(sg_cpu);
util = sugov_get_util(sg_cpu);
max = sg_cpu->max;
@ -831,6 +836,7 @@ static int sugov_start(struct cpufreq_policy *policy)
sg_policy->last_freq_update_time = 0;
sg_policy->next_freq = 0;
sg_policy->work_in_progress = false;
sg_policy->limits_changed = false;
sg_policy->need_freq_update = false;
sg_policy->cached_raw_freq = 0;
@ -879,7 +885,7 @@ static void sugov_limits(struct cpufreq_policy *policy)
mutex_unlock(&sg_policy->work_lock);
}
sg_policy->need_freq_update = true;
sg_policy->limits_changed = true;
}
struct cpufreq_governor schedutil_gov = {