diff options
| author | Vincent Guittot <vincent.guittot@linaro.org> | 2015-02-27 16:54:13 +0100 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-06-12 17:48:15 +0800 |
| commit | 0cb54a4ffbb6e4a1a81727c5da3519732f3ff3b9 (patch) | |
| tree | a35a5390a3ecd486c73f025fb717fca4a36b3355 | |
| parent | 20f5cb28c5d27d37a275e9c4a32e9781b5bd2cb0 (diff) | |
sched: Add SD_PREFER_SIBLING for SMT level
Add the SD_PREFER_SIBLING flag for SMT level in order to ensure that
the scheduler will place at least one task per core.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com>
Cc: Morten.Rasmussen@arm.com
Cc: dietmar.eggemann@arm.com
Cc: efault@gmx.de
Cc: kamalesh@linux.vnet.ibm.com
Cc: linaro-kernel@lists.linaro.org
Cc: nicolas.pitre@linaro.org
Cc: riel@redhat.com
Link: http://lkml.kernel.org/r/1425052454-25797-11-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit caff37ef96eac7fe96a582d032f6958e834e9447)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
| -rw-r--r-- | kernel/sched/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 6688b0cc73c..4d8d6fca530 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5564,6 +5564,7 @@ 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% */ |