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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2020-02-18 15:45:34 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-02-27 10:08:27 +0100 |
| commit | 289de35984815576793f579ec27248609e75976e (patch) | |
| tree | 1a762bbacc79405609bcc9e1746e62bfb37d880a /kernel | |
| parent | Merge tag 'riscv-for-linux-5.6-rc4' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| download | linux-289de35984815576793f579ec27248609e75976e.tar.xz linux-289de35984815576793f579ec27248609e75976e.zip | |
sched/fair: Fix statistics for find_idlest_group()
sgs->group_weight is not set while gathering statistics in
update_sg_wakeup_stats(). This means that a group can be classified as
fully busy with 0 running tasks if utilization is high enough.
This path is mainly used for fork and exec.
Fixes: 57abff067a08 ("sched/fair: Rework find_idlest_group()")
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Link: https://lore.kernel.org/r/20200218144534.4564-1-vincent.guittot@linaro.org
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/fair.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 3c8a379c357e..c1217bfe5e81 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8337,6 +8337,8 @@ static inline void update_sg_wakeup_stats(struct sched_domain *sd, sgs->group_capacity = group->sgc->capacity; + sgs->group_weight = group->group_weight; + sgs->group_type = group_classify(sd->imbalance_pct, group, sgs); /* |