Most call sites of update_load_avg() already have cfs_rq_of(se) available, pass it down instead of recomputing it. Signed-off-by: Peter Zijlstra (Intel) --- kernel/sched/fair.c | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-) --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3498,9 +3498,8 @@ update_cfs_rq_load_avg(u64 now, struct c #define SKIP_AGE_LOAD 0x2 /* Update task and its cfs_rq load average */ -static inline void update_load_avg(struct sched_entity *se, int flags) +static inline void update_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags) { - struct cfs_rq *cfs_rq = cfs_rq_of(se); u64 now = cfs_rq_clock_task(cfs_rq); struct rq *rq = rq_of(cfs_rq); int cpu = cpu_of(rq); @@ -3661,9 +3660,9 @@ update_cfs_rq_load_avg(u64 now, struct c #define UPDATE_TG 0x0 #define SKIP_AGE_LOAD 0x0 -static inline void update_load_avg(struct sched_entity *se, int not_used1) +static inline void update_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se, int not_used1) { - cfs_rq_util_change(cfs_rq_of(se)); + cfs_rq_util_change(cfs_rq); } static inline void @@ -3814,7 +3813,7 @@ enqueue_entity(struct cfs_rq *cfs_rq, st * its group cfs_rq * - Add its new weight to cfs_rq->load.weight */ - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq, se, UPDATE_TG); enqueue_entity_load_avg(cfs_rq, se); update_cfs_shares(se); account_entity_enqueue(cfs_rq, se); @@ -3898,7 +3897,7 @@ dequeue_entity(struct cfs_rq *cfs_rq, st * - For group entity, update its weight to reflect the new share * of its group cfs_rq. */ - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq, se, UPDATE_TG); dequeue_entity_load_avg(cfs_rq, se); update_stats_dequeue(cfs_rq, se, flags); @@ -3986,7 +3985,7 @@ set_next_entity(struct cfs_rq *cfs_rq, s */ update_stats_wait_end(cfs_rq, se); __dequeue_entity(cfs_rq, se); - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq, se, UPDATE_TG); } update_stats_curr_start(cfs_rq, se); @@ -4088,7 +4087,7 @@ static void put_prev_entity(struct cfs_r /* Put 'current' back into the tree. */ __enqueue_entity(cfs_rq, prev); /* in !on_rq case, update occurred at dequeue */ - update_load_avg(prev, 0); + update_load_avg(cfs_rq, prev, 0); } cfs_rq->curr = NULL; } @@ -4104,7 +4103,7 @@ entity_tick(struct cfs_rq *cfs_rq, struc /* * Ensure that runnable average is periodically updated. */ - update_load_avg(curr, UPDATE_TG); + update_load_avg(cfs_rq, curr, UPDATE_TG); update_cfs_shares(curr); #ifdef CONFIG_SCHED_HRTICK @@ -5022,7 +5021,7 @@ enqueue_task_fair(struct rq *rq, struct if (cfs_rq_throttled(cfs_rq)) break; - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq, se, UPDATE_TG); update_cfs_shares(se); } @@ -5081,7 +5080,7 @@ static void dequeue_task_fair(struct rq if (cfs_rq_throttled(cfs_rq)) break; - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq, se, UPDATE_TG); update_cfs_shares(se); } @@ -7044,7 +7043,7 @@ static void update_blocked_averages(int /* Propagate pending load changes to the parent, if any: */ se = cfs_rq->tg->se[cpu]; if (se && !skip_blocked_update(se)) - update_load_avg(se, 0); + update_load_avg(cfs_rq_of(se), se, 0); /* * There can be a lot of idle CPU cgroups. Don't let fully @@ -9185,7 +9184,7 @@ static void propagate_entity_cfs_rq(stru if (cfs_rq_throttled(cfs_rq)) break; - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq, se, UPDATE_TG); } } #else @@ -9197,7 +9196,7 @@ static void detach_entity_cfs_rq(struct struct cfs_rq *cfs_rq = cfs_rq_of(se); /* Catch up with the cfs_rq and remove our load when we leave */ - update_load_avg(se, 0); + update_load_avg(cfs_rq, se, 0); detach_entity_load_avg(cfs_rq, se); update_tg_load_avg(cfs_rq, false); propagate_entity_cfs_rq(se); @@ -9216,7 +9215,7 @@ static void attach_entity_cfs_rq(struct #endif /* Synchronize entity with its cfs_rq */ - update_load_avg(se, sched_feat(ATTACH_AGE_LOAD) ? 0 : SKIP_AGE_LOAD); + update_load_avg(cfs_rq, se, sched_feat(ATTACH_AGE_LOAD) ? 0 : SKIP_AGE_LOAD); attach_entity_load_avg(cfs_rq, se); update_tg_load_avg(cfs_rq, false); propagate_entity_cfs_rq(se); @@ -9500,7 +9499,7 @@ int sched_group_set_shares(struct task_g rq_lock_irqsave(rq, &rf); update_rq_clock(rq); for_each_sched_entity(se) { - update_load_avg(se, UPDATE_TG); + update_load_avg(cfs_rq_of(se), se, UPDATE_TG); update_cfs_shares(se); } rq_unlock_irqrestore(rq, &rf);