Re: [PATCH v3] sched/fair: update scale invariance of PELT

[Patrick Bellasi]

On 18-May 11:36, Peter Zijlstra wrote:
> 
> Replying to the latest version available; given the current interest I
> figure I'd re-read some of the old threads and look at this stuff again.
> 
> On Fri, Apr 28, 2017 at 04:23:55PM +0200, Vincent Guittot wrote:
> 
> > diff --git a/include/linux/sched.h b/include/linux/sched.h
> > index 0978fb7..f8dde36 100644
> > --- a/include/linux/sched.h
> > +++ b/include/linux/sched.h
> > @@ -313,6 +313,7 @@ struct load_weight {
> >   */
> >  struct sched_avg {
> >  	u64				last_update_time;
> > +	u64				stolen_idle_time;
> >  	u64				load_sum;
> >  	u32				util_sum;
> >  	u32				period_contrib;
> 
> Right, so sadly Patrick stole that space with the util_est bits.

Sorry :(

However, I remember we already talked about the idea to
update load_avg and runnable_load_avg to use u32:

   https://marc.info/?l=linux-kernel&m=151334269426419&w=2

-- 
#include <best/regards.h>

Patrick Bellasi