Re: [PATCH 2/5] sched: Add Lazy preemption model

[Sebastian Andrzej Siewior]

On 2024-10-09 11:14:01 [+0200], Peter Zijlstra wrote:
> On Wed, Oct 09, 2024 at 10:50:21AM +0200, Sebastian Andrzej Siewior wrote:
> > On 2024-10-07 09:46:11 [+0200], Peter Zijlstra wrote:
> > > --- a/kernel/sched/core.c
> > > +++ b/kernel/sched/core.c
> > > @@ -1103,6 +1106,32 @@ void resched_curr(struct rq *rq)
> > …
> > > +static __always_inline int tif_need_resched_lazy(void)
> > 
> > The naming is a bit confusing here because tif_need_resched() checks if
> > the TIF_NEED_RESCHED is set while this returns the proper TIF bit
> > instead.
> 
> Right you are; naming things be hard. How about: get_lazy_tif_bit() ?
> There's only the single user anyway.

perfect.

> > > +{
> > > +	if (dynamic_preempt_lazy())
> > > +		return TIF_NEED_RESCHED_LAZY;
> > > +
> > > +	return TIF_NEED_RESCHED;
> > > +}

Sebastian