Re: [PATCH v6 6/6] sched: add SD_PREFER_SIBLING for SMT level

[Preeti U Murthy]

On 09/23/2014 09:38 PM, Vincent Guittot wrote:
> add the SD_PREFER_SIBLING flag for SMT level in order to ensure that
> the scheduler will put at least 1 task per core.
> 
> Signed-off-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
> ---
>  kernel/sched/core.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index c7c8ac4..f72663e 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -6134,6 +6134,7 @@ sd_init(struct sched_domain_topology_level *tl, int cpu)
>  	 */
> 
>  	if (sd->flags & SD_SHARE_CPUCAPACITY) {
> +		sd->flags |= SD_PREFER_SIBLING;
>  		sd->imbalance_pct = 110;
>  		sd->smt_gain = 1178; /* ~15% */
> 
Reviewed-by: Preeti U. Murthy <preeti@xxxxxxxxxxxxxxxxxx>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/