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    SubjectRe: [PATCH v6 6/6] sched: add SD_PREFER_SIBLING for SMT level
    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@linaro.org>
    > ---
    > 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@linux.vnet.ibm.com>



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