evie/android_kernel_oneplus_msm8998
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UPSTREAM: cpufreq: schedutil: irq-work and mutex are only used in slow path

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Execute the irq-work specific initialization/exit code only when the
fast path isn't available.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit 21ef57297b15a49b0c4dd4e7135c1a08e9a29a1c)
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Change-Id: Icfd68f455ef71846d799fcd2d8ec6aa1bf59573e
This commit is contained in:
Chris Redpath 2017-05-25 15:10:26 +01:00 • committed by Andres Oportus
parent ceed1eb2b4
commit d9e7d036e7
1 changed files with 8 additions and 6 deletions
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14
kernel/sched/cpufreq_schedutil.c
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@ -489,15 +489,12 @@ static struct sugov_policy *sugov_policy_alloc(struct cpufreq_policy *policy)
return NULL;
sg_policy->policy = policy;
init_irq_work(&sg_policy->irq_work, sugov_irq_work);
mutex_init(&sg_policy->work_lock);
raw_spin_lock_init(&sg_policy->update_lock);
return sg_policy;
}
static void sugov_policy_free(struct sugov_policy *sg_policy)
{
mutex_destroy(&sg_policy->work_lock);
kfree(sg_policy);
}
@ -531,6 +528,9 @@ static int sugov_kthread_create(struct sugov_policy *sg_policy)
sg_policy->thread = thread;
kthread_bind_mask(thread, policy->related_cpus);
init_irq_work(&sg_policy->irq_work, sugov_irq_work);
mutex_init(&sg_policy->work_lock);
wake_up_process(thread);
return 0;
@ -544,6 +544,7 @@ static void sugov_kthread_stop(struct sugov_policy *sg_policy)
flush_kthread_worker(&sg_policy->worker);
kthread_stop(sg_policy->thread);
mutex_destroy(&sg_policy->work_lock);
}
static struct sugov_tunables *sugov_tunables_alloc(struct sugov_policy *sg_policy)
@ -719,9 +720,10 @@ static int sugov_stop(struct cpufreq_policy *policy)
synchronize_sched();
irq_work_sync(&sg_policy->irq_work);
kthread_cancel_work_sync(&sg_policy->work);
if (!policy->fast_switch_enabled) {
irq_work_sync(&sg_policy->irq_work);
kthread_cancel_work_sync(&sg_policy->work);
}
return 0;
}