Commit-ID: cd126afe838d7ea9b971cdea087fd498a7293c7f Gitweb: http://git.kernel.org/tip/cd126afe838d7ea9b971cdea087fd498a7293c7f Author: Yuyang Du <yuyang...@intel.com> AuthorDate: Wed, 15 Jul 2015 08:04:36 +0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 3 Aug 2015 12:21:28 +0200
sched/fair: Remove rq's runnable avg The current rq->avg is not used at all since its merge into the kernel, and the code is in the scheduler's hot path, so remove it. Tested-by: Dietmar Eggemann <dietmar.eggem...@arm.com> Signed-off-by: Yuyang Du <yuyang...@intel.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Reviewed-by: Dietmar Eggemann <dietmar.eggem...@arm.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Mike Galbraith <efa...@gmx.de> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: ar...@linux.intel.com Cc: bseg...@google.com Cc: fengguang...@intel.com Cc: len.br...@intel.com Cc: morten.rasmus...@arm.com Cc: p...@google.com Cc: rafael.j.wyso...@intel.com Cc: umgwanakikb...@gmail.com Cc: vincent.guit...@linaro.org Link: http://lkml.kernel.org/r/1436918682-4971-2-git-send-email-yuyang...@intel.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/debug.c | 7 +------ kernel/sched/fair.c | 25 ++++--------------------- kernel/sched/sched.h | 2 -- 3 files changed, 5 insertions(+), 29 deletions(-) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 4222ec5..363b7e8 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -68,13 +68,8 @@ static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group #define PN(F) \ SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F)) - if (!se) { - struct sched_avg *avg = &cpu_rq(cpu)->avg; - P(avg->runnable_avg_sum); - P(avg->avg_period); + if (!se) return; - } - PN(se->exec_start); PN(se->vruntime); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index ea23f9f..90292c67 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2724,19 +2724,12 @@ static inline void __update_group_entity_contrib(struct sched_entity *se) } } -static inline void update_rq_runnable_avg(struct rq *rq, int runnable) -{ - __update_entity_runnable_avg(rq_clock_task(rq), cpu_of(rq), &rq->avg, - runnable, runnable); - __update_tg_runnable_avg(&rq->avg, &rq->cfs); -} #else /* CONFIG_FAIR_GROUP_SCHED */ static inline void __update_cfs_rq_tg_load_contrib(struct cfs_rq *cfs_rq, int force_update) {} static inline void __update_tg_runnable_avg(struct sched_avg *sa, struct cfs_rq *cfs_rq) {} static inline void __update_group_entity_contrib(struct sched_entity *se) {} -static inline void update_rq_runnable_avg(struct rq *rq, int runnable) {} #endif /* CONFIG_FAIR_GROUP_SCHED */ static inline void __update_task_entity_contrib(struct sched_entity *se) @@ -2940,7 +2933,6 @@ static inline void dequeue_entity_load_avg(struct cfs_rq *cfs_rq, */ void idle_enter_fair(struct rq *this_rq) { - update_rq_runnable_avg(this_rq, 1); } /* @@ -2950,7 +2942,6 @@ void idle_enter_fair(struct rq *this_rq) */ void idle_exit_fair(struct rq *this_rq) { - update_rq_runnable_avg(this_rq, 0); } static int idle_balance(struct rq *this_rq); @@ -2959,7 +2950,6 @@ static int idle_balance(struct rq *this_rq); static inline void update_entity_load_avg(struct sched_entity *se, int update_cfs_rq) {} -static inline void update_rq_runnable_avg(struct rq *rq, int runnable) {} static inline void enqueue_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se, int wakeup) {} @@ -4258,10 +4248,9 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags) update_entity_load_avg(se, 1); } - if (!se) { - update_rq_runnable_avg(rq, rq->nr_running); + if (!se) add_nr_running(rq, 1); - } + hrtick_update(rq); } @@ -4319,10 +4308,9 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags) update_entity_load_avg(se, 1); } - if (!se) { + if (!se) sub_nr_running(rq, 1); - update_rq_runnable_avg(rq, 1); - } + hrtick_update(rq); } @@ -6005,9 +5993,6 @@ static void __update_blocked_averages_cpu(struct task_group *tg, int cpu) */ if (!se->avg.runnable_avg_sum && !cfs_rq->nr_running) list_del_leaf_cfs_rq(cfs_rq); - } else { - struct rq *rq = rq_of(cfs_rq); - update_rq_runnable_avg(rq, rq->nr_running); } } @@ -7988,8 +7973,6 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued) if (numabalancing_enabled) task_tick_numa(rq, curr); - - update_rq_runnable_avg(rq, 1); } /* diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 84d4879..e13210c 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -595,8 +595,6 @@ struct rq { #ifdef CONFIG_FAIR_GROUP_SCHED /* list of leaf cfs_rq on this cpu: */ struct list_head leaf_cfs_rq_list; - - struct sched_avg avg; #endif /* CONFIG_FAIR_GROUP_SCHED */ /* -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
