On Tue, Sep 02, 2014 at 02:31:53PM +0800, Jason Wang wrote:
> Yes, but current code can not do this. In most of the cases, the new
> woke up process have no chance to run if another process is busy loop in
> the same cpu.
That sounds weird; a process that slept will have an effective vruntime
defi
On Wed, Apr 13, 2016 at 04:51:36PM +0300, Michael S. Tsirkin wrote:
> On Wed, Apr 13, 2016 at 03:28:03PM +0200, Peter Zijlstra wrote:
> > Nope, not true. Current isn't actually in the tree, and any other task
> > is subject to being moved at any time.
> > Even if current was in the tree, there is
On Wed, Apr 13, 2016 at 03:28:03PM +0200, Peter Zijlstra wrote:
> On Mon, Apr 11, 2016 at 07:31:57PM +0300, Michael S. Tsirkin wrote:
> > +static bool expected_to_run_fair(struct cfs_rq *cfs_rq, s64 t)
> > +{
> > + struct sched_entity *left;
> > + struct sched_entity *curr = cfs_rq->cur
On Mon, Apr 11, 2016 at 07:31:57PM +0300, Michael S. Tsirkin wrote:
> +static bool expected_to_run_fair(struct cfs_rq *cfs_rq, s64 t)
> +{
> + struct sched_entity *left;
> + struct sched_entity *curr = cfs_rq->curr;
> +
> + if (!curr || !curr->on_rq)
> + return false
* Michael S. Tsirkin wrote:
> On Fri, Aug 22, 2014 at 09:36:53AM +0200, Ingo Molnar wrote:
> >
> > > > diff --git a/include/net/busy_poll.h b/include/net/busy_poll.h
> > > > index 1d67fb6..8a33fb2 100644
> > > > --- a/include/net/busy_poll.h
> > > > +++ b/include/net/busy_poll.h
> > > > @@ -109
On Fri, Aug 22, 2014 at 09:36:53AM +0200, Ingo Molnar wrote:
>
> > > diff --git a/include/net/busy_poll.h b/include/net/busy_poll.h
> > > index 1d67fb6..8a33fb2 100644
> > > --- a/include/net/busy_poll.h
> > > +++ b/include/net/busy_poll.h
> > > @@ -109,7 +109,8 @@ static inline bool sk_busy_loop(
