Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[sfrench/cifs-2.6.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 28b71ee133f02aafa2462384512337a628990ec8..b55e988988b589dca9ead5726e1f3ac52df4f98e 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -274,11 +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
 
 /*
@@ -953,6 +959,7 @@ struct sched_domain {
        char *name;
 #endif
 
+       unsigned int span_weight;
        /*
         * Span of all CPUs in this domain.
         *
@@ -1025,12 +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);
@@ -1039,7 +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);
@@ -1076,36 +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;
@@ -1137,6 +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
@@ -1839,6 +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) {}