Re: [PATCH RFC] sched: introduce add_wait_queue_exclusive_head

[Oleg Nesterov]

On 03/19, Peter Zijlstra wrote:
>
> On Wed, Mar 19, 2014 at 07:44:29PM +0000, Dilger, Andreas wrote:
> > The original reason for l_wait_event() not using TASK_UNINTERRUPTIBLE
> > is to avoid the load on the server continually being "num_service_threads"
> > regardless of whether they are actually doing something or not.  We
> > added various cases for periodic wakeups and such afterward.
>
> Hmm, maybe we should finally do the TASK_IDLE thing;
>
>   https://lkml.org/lkml/2013/11/12/710

Agreed. And if we are not going to expose TASK_IDLE bit in /proc/ (I think
we should not) the patch should be really trivial.

Oleg.

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