[PATCH v8 08/10] sched: add SD_PREFER_SIBLING for SMT level
From: Wanpeng Li <hidden>
Date: 2014-11-04 03:21:43
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Hi Vincent, On 14/10/31 ??4:47, 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.
What's the behavior before this patch? Regards, Wanpeng Li
quoted hunk ↗ jump to hunk
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Reviewed-by: Preeti U. Murthy <redacted> --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+)diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 37fb92c..731f2ad 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c@@ -6165,6 +6165,7 @@ 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% */