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cpufreq: schedutil: remove stale comment

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After commit 794a56ebd9 (sched/cpufreq: Change the worker kthread to
SCHED_DEADLINE) schedutil kthreads are "ignored" for a clock frequency
selection point of view, so the potential corner case for RT tasks is not
possible at all now.

Remove the stale comment mentioning it.

Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Juri Lelli 2018-05-09 10:40:51 +02:00 committed by Rafael J. Wysocki
parent 75bc37fefc
commit a744490f12
1 changed files with 0 additions and 13 deletions
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13
kernel/sched/cpufreq_schedutil.c
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@ -396,19 +396,6 @@ static void sugov_irq_work(struct irq_work *irq_work)
sg_policy = container_of(irq_work, struct sugov_policy, irq_work);
/*
* For RT tasks, the schedutil governor shoots the frequency to maximum.
* Special care must be taken to ensure that this kthread doesn't result
* in the same behavior.
*
* This is (mostly) guaranteed by the work_in_progress flag. The flag is
* updated only at the end of the sugov_work() function and before that
* the schedutil governor rejects all other frequency scaling requests.
*
* There is a very rare case though, where the RT thread yields right
* after the work_in_progress flag is cleared. The effects of that are
* neglected for now.
*/
kthread_queue_work(&sg_policy->worker, &sg_policy->work);
}