On Fri, Aug 30, 2019 at 18:49:38 +0100, subhra mazumdar wrote...
> Add a new sched feature SIS_CORE to have an option to disable idle core
> search (select_idle_core).
>
> Signed-off-by: subhra mazumdar <subhra.mazum...@oracle.com>
> ---
> kernel/sched/features.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/kernel/sched/features.h b/kernel/sched/features.h
> index 858589b..de4d506 100644
> --- a/kernel/sched/features.h
> +++ b/kernel/sched/features.h
> @@ -57,6 +57,7 @@ SCHED_FEAT(TTWU_QUEUE, true)
> */
> SCHED_FEAT(SIS_AVG_CPU, false)
> SCHED_FEAT(SIS_PROP, true)
> +SCHED_FEAT(SIS_CORE, true)
Why do we need a sched_feature? If you think there are systems in
which the usage of latency-nice does not make sense for in "Select Idle
Sibling", then we should probably better add a new Kconfig option.
If that's the case, you can probably use the init/Kconfig's
"Scheduler features" section, recently added by:
commit 69842cba9ace ("sched/uclamp: Add CPU's clamp buckets refcounting")
> /*
> * Issue a WARN when we do multiple update_rq_clock() calls
Best,
Patrick
--
#include <best/regards.h>
Patrick Bellasi
