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-rw-r--r--include/linux/sched.h80
1 files changed, 37 insertions, 43 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index dad7f668ebf7..b55e988988b5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -99,7 +99,6 @@ struct futex_pi_state;
struct robust_list_head;
struct bio_list;
struct fs_struct;
-struct bts_context;
struct perf_event_context;
/*
@@ -275,11 +274,17 @@ extern cpumask_var_t nohz_cpu_mask;
#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ)
extern int select_nohz_load_balancer(int cpu);
extern int get_nohz_load_balancer(void);
+extern int nohz_ratelimit(int cpu);
#else
static inline int select_nohz_load_balancer(int cpu)
{
return 0;
}
+
+static inline int nohz_ratelimit(int cpu)
+{
+ return 0;
+}
#endif
/*
@@ -954,6 +959,7 @@ struct sched_domain {
char *name;
#endif
+ unsigned int span_weight;
/*
* Span of all CPUs in this domain.
*
@@ -1026,12 +1032,17 @@ struct sched_domain;
#define WF_SYNC 0x01 /* waker goes to sleep after wakup */
#define WF_FORK 0x02 /* child wakeup after fork */
+#define ENQUEUE_WAKEUP 1
+#define ENQUEUE_WAKING 2
+#define ENQUEUE_HEAD 4
+
+#define DEQUEUE_SLEEP 1
+
struct sched_class {
const struct sched_class *next;
- void (*enqueue_task) (struct rq *rq, struct task_struct *p, int wakeup,
- bool head);
- void (*dequeue_task) (struct rq *rq, struct task_struct *p, int sleep);
+ void (*enqueue_task) (struct rq *rq, struct task_struct *p, int flags);
+ void (*dequeue_task) (struct rq *rq, struct task_struct *p, int flags);
void (*yield_task) (struct rq *rq);
void (*check_preempt_curr) (struct rq *rq, struct task_struct *p, int flags);
@@ -1040,7 +1051,8 @@ struct sched_class {
void (*put_prev_task) (struct rq *rq, struct task_struct *p);
#ifdef CONFIG_SMP
- int (*select_task_rq)(struct task_struct *p, int sd_flag, int flags);
+ int (*select_task_rq)(struct rq *rq, struct task_struct *p,
+ int sd_flag, int flags);
void (*pre_schedule) (struct rq *this_rq, struct task_struct *task);
void (*post_schedule) (struct rq *this_rq);
@@ -1077,36 +1089,8 @@ struct load_weight {
unsigned long weight, inv_weight;
};
-/*
- * CFS stats for a schedulable entity (task, task-group etc)
- *
- * Current field usage histogram:
- *
- * 4 se->block_start
- * 4 se->run_node
- * 4 se->sleep_start
- * 6 se->load.weight
- */
-struct sched_entity {
- struct load_weight load; /* for load-balancing */
- struct rb_node run_node;
- struct list_head group_node;
- unsigned int on_rq;
-
- u64 exec_start;
- u64 sum_exec_runtime;
- u64 vruntime;
- u64 prev_sum_exec_runtime;
-
- u64 last_wakeup;
- u64 avg_overlap;
-
- u64 nr_migrations;
-
- u64 start_runtime;
- u64 avg_wakeup;
-
#ifdef CONFIG_SCHEDSTATS
+struct sched_statistics {
u64 wait_start;
u64 wait_max;
u64 wait_count;
@@ -1138,6 +1122,24 @@ struct sched_entity {
u64 nr_wakeups_affine_attempts;
u64 nr_wakeups_passive;
u64 nr_wakeups_idle;
+};
+#endif
+
+struct sched_entity {
+ struct load_weight load; /* for load-balancing */
+ struct rb_node run_node;
+ struct list_head group_node;
+ unsigned int on_rq;
+
+ u64 exec_start;
+ u64 sum_exec_runtime;
+ u64 vruntime;
+ u64 prev_sum_exec_runtime;
+
+ u64 nr_migrations;
+
+#ifdef CONFIG_SCHEDSTATS
+ struct sched_statistics statistics;
#endif
#ifdef CONFIG_FAIR_GROUP_SCHED
@@ -1272,12 +1274,6 @@ struct task_struct {
struct list_head ptraced;
struct list_head ptrace_entry;
- /*
- * This is the tracer handle for the ptrace BTS extension.
- * This field actually belongs to the ptracer task.
- */
- struct bts_context *bts;
-
/* PID/PID hash table linkage. */
struct pid_link pids[PIDTYPE_MAX];
struct list_head thread_group;
@@ -1497,7 +1493,6 @@ struct task_struct {
/* bitmask of trace recursion */
unsigned long trace_recursion;
#endif /* CONFIG_TRACING */
- unsigned long stack_start;
#ifdef CONFIG_CGROUP_MEM_RES_CTLR /* memcg uses this to do batch job */
struct memcg_batch_info {
int do_batch; /* incremented when batch uncharge started */
@@ -1847,6 +1842,7 @@ extern void sched_clock_idle_sleep_event(void);
extern void sched_clock_idle_wakeup_event(u64 delta_ns);
#ifdef CONFIG_HOTPLUG_CPU
+extern void move_task_off_dead_cpu(int dead_cpu, struct task_struct *p);
extern void idle_task_exit(void);
#else
static inline void idle_task_exit(void) {}
@@ -2123,10 +2119,8 @@ extern void set_task_comm(struct task_struct *tsk, char *from);
extern char *get_task_comm(char *to, struct task_struct *tsk);
#ifdef CONFIG_SMP
-extern void wait_task_context_switch(struct task_struct *p);
extern unsigned long wait_task_inactive(struct task_struct *, long match_state);
#else
-static inline void wait_task_context_switch(struct task_struct *p) {}
static inline unsigned long wait_task_inactive(struct task_struct *p,
long match_state)
{