Re: [RFC PATCH v2 5/5] sched/fair: Simplify ancestor enqueue loops

From: Michal Koutný
Date: Fri Sep 10 2021 - 07:35:56 EST


On Thu, Sep 09, 2021 at 04:04:02PM +0200, Vincent Guittot <vincent.guittot@xxxxxxxxxx> wrote:
> These multiple break loops have been done to make unthrottle_cfs_rq,
> throttle_cfs_rq, enqueue_task_fair and dequeue_task_fair to follow the
> same pattern

Ah, I watched only the unthrottle_cfs_rq and enqueue_task_fair pair and
missed the consistency with the other two.

> and I don't see any good reason to break this

Isn't this a good reason
> 21 insertions(+), 36 deletions(-)
?

(The stats are with a grain of salt, I'd need to recheck how these stats
would hold if throttle_cfs_rq, dequeue_task_fair would be modified too +
they look a bit better because of the loop from 1/5.)

Michal