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| author | Ricardo Neri <ricardo.neri-calderon@linux.intel.com> | 2021-09-10 18:18:18 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-10-05 15:52:04 +0200 |
| commit | aafc917a3c31dcc76cb0279cd7617dda11b15f2a (patch) | |
| tree | c8213fcd7edfbced556626f142e043edad11e6a3 /kernel/sched | |
| parent | c0d14b57fe0c11b65ce8a1a4a58a48f3f324ca0f (diff) | |
| download | linux-stable-aafc917a3c31dcc76cb0279cd7617dda11b15f2a.tar.gz linux-stable-aafc917a3c31dcc76cb0279cd7617dda11b15f2a.tar.bz2 linux-stable-aafc917a3c31dcc76cb0279cd7617dda11b15f2a.zip | |
sched/fair: Carve out logic to mark a group for asymmetric packing
Create a separate function, sched_asym(). A subsequent changeset will
introduce logic to deal with SMT in conjunction with asmymmetric
packing. Such logic will need the statistics of the scheduling
group provided as argument. Update them before calling sched_asym().
Co-developed-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Len Brown <len.brown@intel.com>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210911011819.12184-6-ricardo.neri-calderon@linux.intel.com
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/fair.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 2e8ef337c7d4..1c8b5fa58c23 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8571,6 +8571,13 @@ group_type group_classify(unsigned int imbalance_pct, return group_has_spare; } +static inline bool +sched_asym(struct lb_env *env, struct sd_lb_stats *sds, struct sg_lb_stats *sgs, + struct sched_group *group) +{ + return sched_asym_prefer(env->dst_cpu, group->asym_prefer_cpu); +} + /** * update_sg_lb_stats - Update sched_group's statistics for load balancing. * @env: The load balancing environment. @@ -8631,18 +8638,17 @@ static inline void update_sg_lb_stats(struct lb_env *env, } } + sgs->group_capacity = group->sgc->capacity; + + sgs->group_weight = group->group_weight; + /* Check if dst CPU is idle and preferred to this group */ if (!local_group && env->sd->flags & SD_ASYM_PACKING && - env->idle != CPU_NOT_IDLE && - sgs->sum_h_nr_running && - sched_asym_prefer(env->dst_cpu, group->asym_prefer_cpu)) { + env->idle != CPU_NOT_IDLE && sgs->sum_h_nr_running && + sched_asym(env, sds, sgs, group)) { sgs->group_asym_packing = 1; } - sgs->group_capacity = group->sgc->capacity; - - sgs->group_weight = group->group_weight; - sgs->group_type = group_classify(env->sd->imbalance_pct, group, sgs); /* Computing avg_load makes sense only when group is overloaded */ |