The following commit has been merged into the sched/core branch of tip: Commit-ID: b1d1779e5ef7a60b192b61fd97201f322e1e9303 Gitweb: https://git.kernel.org/tip/b1d1779e5ef7a60b192b61fd97201f322e1e9303 Author: Wei Yang <richard.weiyang@xxxxxxxxx> AuthorDate: Thu, 23 Apr 2020 21:44:43 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Thu, 30 Apr 2020 20:14:42 +02:00 sched/core: Simplify sched_init() Currently root_task_group.shares and cfs_bandwidth are initialized for each online cpu, which not necessary. Let's take it out to do it only once. Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Link: https://lkml.kernel.org/r/20200423214443.29994-1-richard.weiyang@xxxxxxxxx --- kernel/sched/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index f6ae262..b58efb1 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6597,6 +6597,8 @@ void __init sched_init(void) root_task_group.cfs_rq = (struct cfs_rq **)ptr; ptr += nr_cpu_ids * sizeof(void **); + root_task_group.shares = ROOT_TASK_GROUP_LOAD; + init_cfs_bandwidth(&root_task_group.cfs_bandwidth); #endif /* CONFIG_FAIR_GROUP_SCHED */ #ifdef CONFIG_RT_GROUP_SCHED root_task_group.rt_se = (struct sched_rt_entity **)ptr; @@ -6649,7 +6651,6 @@ void __init sched_init(void) init_rt_rq(&rq->rt); init_dl_rq(&rq->dl); #ifdef CONFIG_FAIR_GROUP_SCHED - root_task_group.shares = ROOT_TASK_GROUP_LOAD; INIT_LIST_HEAD(&rq->leaf_cfs_rq_list); rq->tmp_alone_branch = &rq->leaf_cfs_rq_list; /* @@ -6671,7 +6672,6 @@ void __init sched_init(void) * We achieve this by letting root_task_group's tasks sit * directly in rq->cfs (i.e root_task_group->se[] = NULL). */ - init_cfs_bandwidth(&root_task_group.cfs_bandwidth); init_tg_cfs_entry(&root_task_group, &rq->cfs, NULL, i, NULL); #endif /* CONFIG_FAIR_GROUP_SCHED */
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