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-rw-r--r--kernel/sched/fair.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 74dc29ba1ad..db788222f19 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1102,6 +1102,26 @@ static inline u64 __synchronize_entity_decay(struct sched_entity *se)
return decays;
}
+#ifdef CONFIG_FAIR_GROUP_SCHED
+static inline void __update_cfs_rq_tg_load_contrib(struct cfs_rq *cfs_rq,
+ int force_update)
+{
+ struct task_group *tg = cfs_rq->tg;
+ s64 tg_contrib;
+
+ tg_contrib = cfs_rq->runnable_load_avg + cfs_rq->blocked_load_avg;
+ tg_contrib -= cfs_rq->tg_load_contrib;
+
+ if (force_update || abs64(tg_contrib) > cfs_rq->tg_load_contrib / 8) {
+ atomic64_add(tg_contrib, &tg->load_avg);
+ cfs_rq->tg_load_contrib += tg_contrib;
+ }
+}
+#else
+static inline void __update_cfs_rq_tg_load_contrib(struct cfs_rq *cfs_rq,
+ int force_update) {}
+#endif
+
/* Compute the current contribution to load_avg by se, return any delta */
static long __update_entity_load_avg_contrib(struct sched_entity *se)
{
@@ -1172,6 +1192,8 @@ static void update_cfs_rq_blocked_load(struct cfs_rq *cfs_rq, int force_update)
atomic64_add(decays, &cfs_rq->decay_counter);
cfs_rq->last_decay = now;
}
+
+ __update_cfs_rq_tg_load_contrib(cfs_rq, force_update);
}
static inline void update_rq_runnable_avg(struct rq *rq, int runnable)