Messages in this thread | | | From | Vincent Guittot <> | Date | Thu, 25 Sep 2014 10:35:03 +0200 | Subject | Re: [PATCH v6 5/6] sched: replace capacity_factor by usage |
| |
On 24 September 2014 19:48, Dietmar Eggemann <dietmar.eggemann@arm.com> wrote: > On 23/09/14 17:08, Vincent Guittot wrote: >
[snip]
> > This review (by PeterZ) during v5 of your patch-set recommended some > renaming (e.g. s/group_has_free_capacity/group_has_capacity and > s/group_out_of_capacity/group_no_capacity as well as reordering of the > parameters which I agree with: > > https://lkml.org/lkml/2014/9/11/706
Ah... you're right, these changes have passed through my seance of renaming
> >> >> -/*
[snip]
>> - if (sgs->group_capacity_factor > sgs->sum_nr_running) >> - sgs->group_has_free_capacity = 1; >> + sgs->group_type = group_classify(group, sgs, env); >> + >> + sgs->group_out_of_capacity = group_is_overloaded(sgs, env); > > In case sgs->group_type is group_overloaded you could set > sgs->group_out_of_capacity to 1 without calling group_is_overloaded again.
I prefer to keep sgs->group_out_of_capacity = group_is_overloaded(sgs, env) and use it in group_classify in case of future changes in the classification order
Regards, Vincent > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 7cdf271e8e52..52d441c92a4f 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -6037,7 +6037,8 @@ static inline void update_sg_lb_stats(struct > lb_env *env, > > sgs->group_type = group_classify(group, sgs, env); > > - sgs->group_out_of_capacity = group_is_overloaded(sgs, env); > + if (sgs->group_type == group_overloaded) > + sgs->group_out_of_capacity = 1; > } > >> } >> >> /** >> @@ -6198,17 +6163,21 @@ static inline void update_sd_lb_stats(struct lb_env *env, struct sd_lb_stats *sd > > [...] >
| |