Re: [PATCH 3/6] sched: Extract __schedule_loop()

[Phil Auld]

On Wed, Aug 16, 2023 at 12:39:26AM +0200 Peter Zijlstra wrote:
> On Tue, Aug 15, 2023 at 06:33:01PM -0400, Phil Auld wrote:
> > Hi Peter,
> > 
> > On Tue, Aug 15, 2023 at 01:01:24PM +0200 Peter Zijlstra wrote:
> > > From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > > 
> > > There are currently two implementations of this basic __schedule()
> > > loop, and there is soon to be a third.
> > > 
> > > Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > > Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> > > Link: https://lkml.kernel.org/r/20230427111937.2745231-2-bigeasy@xxxxxxxxxxxxx
> > > ---
> > >  kernel/sched/core.c |   21 +++++++++++----------
> > >  1 file changed, 11 insertions(+), 10 deletions(-)
> > > 
> > > --- a/kernel/sched/core.c
> > > +++ b/kernel/sched/core.c
> > > @@ -6787,16 +6787,21 @@ static void sched_update_worker(struct t
> > >  	}
> > >  }
> > >  
> > > -asmlinkage __visible void __sched schedule(void)
> > > +static __always_inline void __schedule_loop(unsigned int sched_mode)
> > 
> > I think this needs __sched or it's the only thing that ever shows up
> > in wchan. E.g.
> > 
> >   16995 0 bash     S __schedule_loop.constprop.0
> >   17036 1 kworker/ I __schedule_loop.constprop.0
> >   17151 1 kworker/ I __schedule_loop.constprop.0
> >   17235 0 sleep    S __schedule_loop.constprop.0
> >   17236 4 ps       R -
> 
> But but but __always_inline... ?!?
> 

Yep, sorry. Totally missed those characters (and this reply of yours).

The older version from the rt tree had neither. 


Cheers,
Phil
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