From mboxrd@z Thu Jan 1 00:00:00 1970 From: preeti@linux.vnet.ibm.com (Preeti U Murthy) Date: Wed, 24 Sep 2014 17:57:51 +0530 Subject: [PATCH v6 6/6] sched: add SD_PREFER_SIBLING for SMT level In-Reply-To: <1411488485-10025-7-git-send-email-vincent.guittot@linaro.org> References: <1411488485-10025-1-git-send-email-vincent.guittot@linaro.org> <1411488485-10025-7-git-send-email-vincent.guittot@linaro.org> Message-ID: <5422B8C7.6090905@linux.vnet.ibm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > --- > 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