extern unsigned long calc_load_update;
extern atomic_long_t calc_load_tasks;
+extern void calc_global_load_tick(struct rq *this_rq);
extern long calc_load_fold_active(struct rq *this_rq);
+
+#ifdef CONFIG_SMP
extern void update_cpu_load_active(struct rq *this_rq);
+#else
+static inline void update_cpu_load_active(struct rq *this_rq) { }
+#endif
/*
* Helpers for converting nanosecond timing to jiffy resolution
*/
#define RUNTIME_INF ((u64)~0ULL)
+static inline int idle_policy(int policy)
+{
+ return policy == SCHED_IDLE;
+}
static inline int fair_policy(int policy)
{
return policy == SCHED_NORMAL || policy == SCHED_BATCH;
{
return policy == SCHED_DEADLINE;
}
+static inline bool valid_policy(int policy)
+{
+ return idle_policy(policy) || fair_policy(policy) ||
+ rt_policy(policy) || dl_policy(policy);
+}
static inline int task_has_rt_policy(struct task_struct *p)
{
return dl_policy(p->policy);
}
-static inline bool dl_time_before(u64 a, u64 b)
-{
- return (s64)(a - b) < 0;
-}
-
/*
* Tells if entity @a should preempt entity @b.
*/
ktime_t rt_period;
u64 rt_runtime;
struct hrtimer rt_period_timer;
+ unsigned int rt_period_active;
};
void __dl_clear_params(struct task_struct *p);
s64 hierarchical_quota;
u64 runtime_expires;
- int idle, timer_active;
+ int idle, period_active;
struct hrtimer period_timer, slack_timer;
struct list_head throttled_cfs_rq;
#ifdef CONFIG_SMP
atomic_long_t load_avg;
- atomic_t runnable_avg;
#endif
#endif
extern int sched_group_set_shares(struct task_group *tg, unsigned long shares);
extern void __refill_cfs_bandwidth_runtime(struct cfs_bandwidth *cfs_b);
-extern void __start_cfs_bandwidth(struct cfs_bandwidth *cfs_b, bool force);
+extern void start_cfs_bandwidth(struct cfs_bandwidth *cfs_b);
extern void unthrottle_cfs_rq(struct cfs_rq *cfs_rq);
extern void free_rt_sched_group(struct task_group *tg);
#ifdef CONFIG_SMP
/*
- * CFS Load tracking
- * Under CFS, load is tracked on a per-entity basis and aggregated up.
- * This allows for the description of both thread and group usage (in
- * the FAIR_GROUP_SCHED case).
- * runnable_load_avg is the sum of the load_avg_contrib of the
- * sched_entities on the rq.
- * blocked_load_avg is similar to runnable_load_avg except that its
- * the blocked sched_entities on the rq.
- * utilization_load_avg is the sum of the average running time of the
- * sched_entities on the rq.
+ * CFS load tracking
*/
- unsigned long runnable_load_avg, blocked_load_avg, utilization_load_avg;
- atomic64_t decay_counter;
- u64 last_decay;
- atomic_long_t removed_load;
-
+ struct sched_avg avg;
+ u64 runnable_load_sum;
+ unsigned long runnable_load_avg;
#ifdef CONFIG_FAIR_GROUP_SCHED
- /* Required to track per-cpu representation of a task_group */
- u32 tg_runnable_contrib;
- unsigned long tg_load_contrib;
+ unsigned long tg_load_avg_contrib;
+#endif
+ atomic_long_t removed_load_avg, removed_util_avg;
+#ifndef CONFIG_64BIT
+ u64 load_last_update_time_copy;
+#endif
+#ifdef CONFIG_FAIR_GROUP_SCHED
/*
* h_load = weight * f(tg)
*
#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 */
/*
unsigned long cpu_capacity;
unsigned long cpu_capacity_orig;
+ struct callback_head *balance_callback;
+
unsigned char idle_balance;
/* For active balancing */
- int post_schedule;
int active_balance;
int push_cpu;
struct cpu_stop_work active_balance_work;
static inline u64 __rq_clock_broken(struct rq *rq)
{
- return ACCESS_ONCE(rq->clock);
+ return READ_ONCE(rq->clock);
}
static inline u64 rq_clock(struct rq *rq)
#ifdef CONFIG_SMP
+static inline void
+queue_balance_callback(struct rq *rq,
+ struct callback_head *head,
+ void (*func)(struct rq *rq))
+{
+ lockdep_assert_held(&rq->lock);
+
+ if (unlikely(head->next))
+ return;
+
+ head->func = (void (*)(struct callback_head *))func;
+ head->next = rq->balance_callback;
+ rq->balance_callback = head;
+}
+
extern void sched_ttwu_pending(void);
#define rcu_dereference_check_sched_domain(p) \
#define sched_feat(x) (sysctl_sched_features & (1UL << __SCHED_FEAT_##x))
#endif /* SCHED_DEBUG && HAVE_JUMP_LABEL */
-#ifdef CONFIG_NUMA_BALANCING
-#define sched_feat_numa(x) sched_feat(x)
-#ifdef CONFIG_SCHED_DEBUG
-#define numabalancing_enabled sched_feat_numa(NUMA)
-#else
-extern bool numabalancing_enabled;
-#endif /* CONFIG_SCHED_DEBUG */
-#else
-#define sched_feat_numa(x) (0)
-#define numabalancing_enabled (0)
-#endif /* CONFIG_NUMA_BALANCING */
+extern struct static_key_false sched_numa_balancing;
static inline u64 global_rt_period(void)
{
#ifndef prepare_arch_switch
# define prepare_arch_switch(next) do { } while (0)
#endif
-#ifndef finish_arch_switch
-# define finish_arch_switch(prev) do { } while (0)
-#endif
#ifndef finish_arch_post_lock_switch
# define finish_arch_post_lock_switch() do { } while (0)
#endif
* After ->on_cpu is cleared, the task can be moved to a different CPU.
* We must ensure this doesn't happen until the switch is completely
* finished.
+ *
+ * In particular, the load of prev->state in finish_task_switch() must
+ * happen before this.
+ *
+ * Pairs with the control dependency and rmb in try_to_wake_up().
*/
- smp_wmb();
- prev->on_cpu = 0;
+ smp_store_release(&prev->on_cpu, 0);
#endif
#ifdef CONFIG_DEBUG_SPINLOCK
/* this is a valid case when another task releases the spinlock */
/* 15 */ 119304647, 148102320, 186737708, 238609294, 286331153,
};
-#define ENQUEUE_WAKEUP 1
-#define ENQUEUE_HEAD 2
+#define ENQUEUE_WAKEUP 0x01
+#define ENQUEUE_HEAD 0x02
#ifdef CONFIG_SMP
-#define ENQUEUE_WAKING 4 /* sched_class::task_waking was called */
+#define ENQUEUE_WAKING 0x04 /* sched_class::task_waking was called */
#else
-#define ENQUEUE_WAKING 0
+#define ENQUEUE_WAKING 0x00
#endif
-#define ENQUEUE_REPLENISH 8
+#define ENQUEUE_REPLENISH 0x08
+#define ENQUEUE_RESTORE 0x10
-#define DEQUEUE_SLEEP 1
+#define DEQUEUE_SLEEP 0x01
+#define DEQUEUE_SAVE 0x02
#define RETRY_TASK ((void *)-1UL)
#ifdef CONFIG_SMP
int (*select_task_rq)(struct task_struct *p, int task_cpu, int sd_flag, int flags);
- void (*migrate_task_rq)(struct task_struct *p, int next_cpu);
+ void (*migrate_task_rq)(struct task_struct *p);
- void (*post_schedule) (struct rq *this_rq);
void (*task_waking) (struct task_struct *task);
void (*task_woken) (struct rq *this_rq, struct task_struct *task);
void (*update_curr) (struct rq *rq);
#ifdef CONFIG_FAIR_GROUP_SCHED
- void (*task_move_group) (struct task_struct *p, int on_rq);
+ void (*task_move_group) (struct task_struct *p);
#endif
};
extern void idle_enter_fair(struct rq *this_rq);
extern void idle_exit_fair(struct rq *this_rq);
+extern void set_cpus_allowed_common(struct task_struct *p, const struct cpumask *new_mask);
+
#else
static inline void idle_enter_fair(struct rq *rq) { }
extern void init_sched_dl_class(void);
extern void init_sched_rt_class(void);
extern void init_sched_fair_class(void);
-extern void init_sched_dl_class(void);
extern void resched_curr(struct rq *rq);
extern void resched_cpu(int cpu);
unsigned long to_ratio(u64 period, u64 runtime);
-extern void update_idle_cpu_load(struct rq *this_rq);
-
-extern void init_task_runnable_average(struct task_struct *p);
+extern void init_entity_runnable_average(struct sched_entity *se);
static inline void add_nr_running(struct rq *rq, unsigned count)
{
}
#endif
+#ifndef arch_scale_cpu_capacity
+static __always_inline
+unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
+{
+ if (sd && (sd->flags & SD_SHARE_CPUCAPACITY) && (sd->span_weight > 1))
+ return sd->smt_gain / sd->span_weight;
+
+ return SCHED_CAPACITY_SCALE;
+}
+#endif
+
static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta)
{
rq->rt_avg += rt_delta * arch_scale_freq_capacity(NULL, cpu_of(rq));
static inline void sched_avg_update(struct rq *rq) { }
#endif
-extern void start_bandwidth_timer(struct hrtimer *period_timer, ktime_t period);
-
/*
* __task_rq_lock - lock the rq @p resides on.
*/
for (;;) {
rq = task_rq(p);
raw_spin_lock(&rq->lock);
- if (likely(rq == task_rq(p) && !task_on_rq_migrating(p)))
+ if (likely(rq == task_rq(p) && !task_on_rq_migrating(p))) {
+ lockdep_pin_lock(&rq->lock);
return rq;
+ }
raw_spin_unlock(&rq->lock);
while (unlikely(task_on_rq_migrating(p)))
* If we observe the new cpu in task_rq_lock, the acquire will
* pair with the WMB to ensure we must then also see migrating.
*/
- if (likely(rq == task_rq(p) && !task_on_rq_migrating(p)))
+ if (likely(rq == task_rq(p) && !task_on_rq_migrating(p))) {
+ lockdep_pin_lock(&rq->lock);
return rq;
+ }
raw_spin_unlock(&rq->lock);
raw_spin_unlock_irqrestore(&p->pi_lock, *flags);
static inline void __task_rq_unlock(struct rq *rq)
__releases(rq->lock)
{
+ lockdep_unpin_lock(&rq->lock);
raw_spin_unlock(&rq->lock);
}
__releases(rq->lock)
__releases(p->pi_lock)
{
+ lockdep_unpin_lock(&rq->lock);
raw_spin_unlock(&rq->lock);
raw_spin_unlock_irqrestore(&p->pi_lock, *flags);
}
extern struct sched_entity *__pick_first_entity(struct cfs_rq *cfs_rq);
extern struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq);
+
+#ifdef CONFIG_SCHED_DEBUG
extern void print_cfs_stats(struct seq_file *m, int cpu);
extern void print_rt_stats(struct seq_file *m, int cpu);
extern void print_dl_stats(struct seq_file *m, int cpu);
+extern void
+print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq);
+
+#ifdef CONFIG_NUMA_BALANCING
+extern void
+show_numa_stats(struct task_struct *p, struct seq_file *m);
+extern void
+print_numa_stats(struct seq_file *m, int node, unsigned long tsf,
+ unsigned long tpf, unsigned long gsf, unsigned long gpf);
+#endif /* CONFIG_NUMA_BALANCING */
+#endif /* CONFIG_SCHED_DEBUG */
extern void init_cfs_rq(struct cfs_rq *cfs_rq);
extern void init_rt_rq(struct rt_rq *rt_rq);
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