Re: [Eas-dev] [PATCH V5 2/2] cpufreq: Process remote callbacks from any CPU if the platform permits

From: Viresh Kumar
Date: Tue Aug 01 2017 - 23:44:49 EST

On 01-08-17, 16:30, Pavan Kondeti wrote:
> Currently sugov threads in the schedutil governor are pinned to the
> policy CPUs. schedutil can now make use of this new
> dvfs_possible_from_any_cpu flag and avoid the pinning, right?

Actually yes and it would be something as simple as below. Will send a patch for
this if no one reports any problems with this.

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 9deedd5f16a5..6ea12a8c8863 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -471,7 +471,10 @@ static int sugov_kthread_create(struct sugov_policy *sg_policy)

sg_policy->thread = thread;
- kthread_bind_mask(thread, policy->related_cpus);
+ if (!policy->dvfs_possible_from_any_cpu)
+ kthread_bind_mask(thread, policy->related_cpus);
init_irq_work(&sg_policy->irq_work, sugov_irq_work);