From: Guan Jing guanjing6@huawei.com
Offering: HULK hulk inclusion category: feature bugzilla: 188161
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Track how many tasks are present with qos_offline_policy in each cfs_rq. This will be used by later commits.
Signed-off-by: Guan Jing guanjing6@huawei.com
Signed-off-by: Guan Jing guanjing6@huawei.com --- kernel/sched/fair.c | 76 +++++++++++++++++++++++++++++++++++++++++--- kernel/sched/sched.h | 20 ++++++++++++ 2 files changed, 91 insertions(+), 5 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index d3c4b945c019..769508559ee8 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4863,6 +4863,9 @@ static bool throttle_cfs_rq(struct cfs_rq *cfs_rq) struct cfs_bandwidth *cfs_b = tg_cfs_bandwidth(cfs_rq->tg); struct sched_entity *se; long task_delta, idle_task_delta, dequeue = 1; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + long qos_idle_delta; +#endif
raw_spin_lock(&cfs_b->lock); /* This will start the period timer if necessary */ @@ -4894,6 +4897,10 @@ static bool throttle_cfs_rq(struct cfs_rq *cfs_rq)
task_delta = cfs_rq->h_nr_running; idle_task_delta = cfs_rq->idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + qos_idle_delta = cfs_rq->qos_idle_h_nr_running; +#endif + for_each_sched_entity(se) { struct cfs_rq *qcfs_rq = cfs_rq_of(se); /* throttled entity or throttle-on-deactivate */ @@ -4909,6 +4916,9 @@ static bool throttle_cfs_rq(struct cfs_rq *cfs_rq)
qcfs_rq->h_nr_running -= task_delta; qcfs_rq->idle_h_nr_running -= idle_task_delta; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + qcfs_rq->qos_idle_h_nr_running -= qos_idle_delta; +#endif
if (qcfs_rq->load.weight) dequeue = 0; @@ -4936,6 +4946,9 @@ void unthrottle_cfs_rq(struct cfs_rq *cfs_rq) struct cfs_bandwidth *cfs_b = tg_cfs_bandwidth(cfs_rq->tg); struct sched_entity *se; long task_delta, idle_task_delta; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + long qos_idle_delta; +#endif
se = cfs_rq->tg->se[cpu_of(rq)];
@@ -4964,6 +4977,9 @@ void unthrottle_cfs_rq(struct cfs_rq *cfs_rq)
task_delta = cfs_rq->h_nr_running; idle_task_delta = cfs_rq->idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + qos_idle_delta = cfs_rq->qos_idle_h_nr_running; +#endif for_each_sched_entity(se) { if (se->on_rq) break; @@ -4972,6 +4988,9 @@ void unthrottle_cfs_rq(struct cfs_rq *cfs_rq)
cfs_rq->h_nr_running += task_delta; cfs_rq->idle_h_nr_running += idle_task_delta; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running += qos_idle_delta; +#endif
/* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) @@ -4986,7 +5005,9 @@ void unthrottle_cfs_rq(struct cfs_rq *cfs_rq)
cfs_rq->h_nr_running += task_delta; cfs_rq->idle_h_nr_running += idle_task_delta; - +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running += qos_idle_delta; +#endif
/* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) @@ -5620,6 +5641,9 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags) struct cfs_rq *cfs_rq; struct sched_entity *se = &p->se; int idle_h_nr_running = task_has_idle_policy(p); +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + int qos_idle_h_nr_running = task_has_qos_idle_policy(p); +#endif int task_new = !(flags & ENQUEUE_WAKEUP); unsigned int prev_nr = rq->cfs.h_nr_running;
@@ -5647,6 +5671,9 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
cfs_rq->h_nr_running++; cfs_rq->idle_h_nr_running += idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running += qos_idle_h_nr_running; +#endif
/* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) @@ -5664,6 +5691,9 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
cfs_rq->h_nr_running++; cfs_rq->idle_h_nr_running += idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running += qos_idle_h_nr_running; +#endif
/* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) @@ -5738,6 +5768,9 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags) struct sched_entity *se = &p->se; int task_sleep = flags & DEQUEUE_SLEEP; int idle_h_nr_running = task_has_idle_policy(p); +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + int qos_idle_h_nr_running = task_has_qos_idle_policy(p); +#endif unsigned int prev_nr = rq->cfs.h_nr_running; bool was_sched_idle = sched_idle_rq(rq);
@@ -5749,6 +5782,9 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
cfs_rq->h_nr_running--; cfs_rq->idle_h_nr_running -= idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running -= qos_idle_h_nr_running; +#endif
/* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) @@ -5778,6 +5814,9 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
cfs_rq->h_nr_running--; cfs_rq->idle_h_nr_running -= idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running -= qos_idle_h_nr_running; +#endif
/* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) @@ -7299,7 +7338,9 @@ static void throttle_qos_cfs_rq(struct cfs_rq *cfs_rq) struct sched_entity *se; unsigned int prev_nr = cfs_rq->h_nr_running; long task_delta, idle_task_delta, dequeue = 1; - +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + long qos_idle_delta; +#endif se = cfs_rq->tg->se[cpu_of(rq_of(cfs_rq))];
/* freeze hierarchy runnable averages while throttled */ @@ -7309,6 +7350,9 @@ static void throttle_qos_cfs_rq(struct cfs_rq *cfs_rq)
task_delta = cfs_rq->h_nr_running; idle_task_delta = cfs_rq->idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + qos_idle_delta = cfs_rq->qos_idle_h_nr_running; +#endif for_each_sched_entity(se) { struct cfs_rq *qcfs_rq = cfs_rq_of(se); /* throttled entity or throttle-on-deactivate */ @@ -7324,6 +7368,9 @@ static void throttle_qos_cfs_rq(struct cfs_rq *cfs_rq)
qcfs_rq->h_nr_running -= task_delta; qcfs_rq->idle_h_nr_running -= idle_task_delta; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + qcfs_rq->qos_idle_h_nr_running -= qos_idle_delta; +#endif
if (qcfs_rq->load.weight) dequeue = 0; @@ -7351,6 +7398,9 @@ static void unthrottle_qos_cfs_rq(struct cfs_rq *cfs_rq) struct sched_entity *se; unsigned int prev_nr = cfs_rq->h_nr_running; long task_delta, idle_task_delta; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + long qos_idle_delta; +#endif
se = cfs_rq->tg->se[cpu_of(rq)];
@@ -7372,6 +7422,9 @@ static void unthrottle_qos_cfs_rq(struct cfs_rq *cfs_rq)
task_delta = cfs_rq->h_nr_running; idle_task_delta = cfs_rq->idle_h_nr_running; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + qos_idle_delta = cfs_rq->qos_idle_h_nr_running; +#endif for_each_sched_entity(se) { if (se->on_rq) break; @@ -7381,6 +7434,9 @@ static void unthrottle_qos_cfs_rq(struct cfs_rq *cfs_rq)
cfs_rq->h_nr_running += task_delta; cfs_rq->idle_h_nr_running += idle_task_delta; +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running += qos_idle_delta; +#endif
if (cfs_rq_throttled(cfs_rq)) goto unthrottle_throttle; @@ -7394,7 +7450,9 @@ static void unthrottle_qos_cfs_rq(struct cfs_rq *cfs_rq)
cfs_rq->h_nr_running += task_delta; cfs_rq->idle_h_nr_running += idle_task_delta; - +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + cfs_rq->qos_idle_h_nr_running += qos_idle_delta; +#endif /* end evaluation on encountering a throttled cfs_rq */ if (cfs_rq_throttled(cfs_rq)) goto unthrottle_throttle; @@ -7568,6 +7626,14 @@ static bool qos_smt_check_siblings_status(int this_cpu) return false; }
+static bool qos_sched_idle_cpu(int this_cpu) +{ + struct rq *rq = cpu_rq(this_cpu); + + return unlikely(rq->nr_running == rq->cfs.qos_idle_h_nr_running && + rq->nr_running); +} + static bool qos_smt_expelled(int this_cpu) { /* @@ -7575,7 +7641,7 @@ static bool qos_smt_expelled(int this_cpu) * offline tasks enqueued, there is not suitable task, * so pick_next_task_fair return null. */ - if (qos_smt_check_siblings_status(this_cpu) && sched_idle_cpu(this_cpu)) + if (qos_smt_check_siblings_status(this_cpu) && qos_sched_idle_cpu(this_cpu)) return true;
return false; @@ -7655,7 +7721,7 @@ static bool _qos_smt_check_need_resched(int this_cpu, struct rq *rq) }
if (per_cpu(qos_smt_status, cpu) == QOS_LEVEL_OFFLINE && - rq->curr == rq->idle && sched_idle_cpu(this_cpu)) { + rq->curr == rq->idle && qos_sched_idle_cpu(this_cpu)) { trace_sched_qos_smt_expel(cpu_curr(cpu), per_cpu(qos_smt_status, cpu)); return true; } diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 0ab8e2532f2d..a79289190368 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -650,6 +650,12 @@ struct cfs_rq { unsigned int forceidle_seq; KABI_FILL_HOLE(unsigned int kabi_hole) u64 min_vruntime_fi; +#elif defined CONFIG_QOS_SCHED_SMT_EXPELLER + union { + unsigned int qos_idle_h_nr_running; /* qos_level：-1 */ + unsigned long qos_idle_h_nr_running_padding; + }; + KABI_FILL_HOLE(unsigned long kabi_hole) #else KABI_RESERVE(3) KABI_RESERVE(4) @@ -3015,5 +3021,19 @@ static inline bool is_per_cpu_kthread(struct task_struct *p) } #endif
+#ifdef CONFIG_QOS_SCHED +static inline int qos_idle_policy(int policy) +{ + return policy == QOS_LEVEL_OFFLINE; +} +#endif + +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER +static inline int task_has_qos_idle_policy(struct task_struct *p) +{ + return qos_idle_policy(task_group(p)->qos_level) && p->policy == SCHED_IDLE; +} +#endif + void swake_up_all_locked(struct swait_queue_head *q); void __prepare_to_swait(struct swait_queue_head *q, struct swait_queue *wait);