Re: [PATCH v2] sched/fair: Document the slow path and fast path in select_task_rq_fair

[Peter Zijlstra]

On Sat, Oct 16, 2021 at 07:11:09PM +0800, Barry Song wrote:
> From: Barry Song <song.bao.hua@xxxxxxxxxxxxx>
> 
> All People I know including myself took a long time to figure out
> that typical wakeup will always go to fast path and never go to
> slow path except WF_FORK and WF_EXEC.
> Vincent reminded me once in a linaro meeting and made me understand
> slow path won't happen for WF_TTWU. But my other friends repeatedly
> wasted a lot of time on testing this path like me before I reminded
> them.
> So obviously the code needs some document.
> 
> Cc: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
> Signed-off-by: Barry Song <song.bao.hua@xxxxxxxxxxxxx>
> ---

Thanks!