Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[linux-2.6] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1301c087537056949c225b1ad4a288bd90e360b5..ee800e7a70de427ae9ce46e34c27ac659d04336b 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -254,6 +254,7 @@ long io_schedule_timeout(long timeout);
 
 extern void cpu_init (void);
 extern void trap_init(void);
+extern void account_process_tick(struct task_struct *task, int user);
 extern void update_process_times(int user);
 extern void scheduler_tick(void);
 
@@ -429,7 +430,17 @@ struct signal_struct {
        cputime_t it_prof_incr, it_virt_incr;
 
        /* job control IDs */
-       pid_t pgrp;
+
+       /*
+        * pgrp and session fields are deprecated.
+        * use the task_session_Xnr and task_pgrp_Xnr routines below
+        */
+
+       union {
+               pid_t pgrp __deprecated;
+               pid_t __pgrp;
+       };
+
        struct pid *tty_old_pgrp;
 
        union {
@@ -737,6 +748,8 @@ struct sched_domain {
 #endif
 };
 
+extern void partition_sched_domains(int ndoms_new, cpumask_t *doms_new);
+
 #endif /* CONFIG_SMP */
 
 /*
@@ -816,12 +829,17 @@ struct sched_class {
        struct task_struct * (*pick_next_task) (struct rq *rq);
        void (*put_prev_task) (struct rq *rq, struct task_struct *p);
 
+#ifdef CONFIG_SMP
        unsigned long (*load_balance) (struct rq *this_rq, int this_cpu,
-                       struct rq *busiest,
-                       unsigned long max_nr_move, unsigned long max_load_move,
+                       struct rq *busiest, unsigned long max_load_move,
                        struct sched_domain *sd, enum cpu_idle_type idle,
                        int *all_pinned, int *this_best_prio);
 
+       int (*move_one_task) (struct rq *this_rq, int this_cpu,
+                             struct rq *busiest, struct sched_domain *sd,
+                             enum cpu_idle_type idle);
+#endif
+
        void (*set_curr_task) (struct rq *rq);
        void (*task_tick) (struct rq *rq, struct task_struct *p);
        void (*task_new) (struct rq *rq, struct task_struct *p);
@@ -845,7 +863,6 @@ struct sched_entity {
        struct load_weight      load;           /* for load-balancing */
        struct rb_node          run_node;
        unsigned int            on_rq;
-       int                     peer_preempt;
 
        u64                     exec_start;
        u64                     sum_exec_runtime;
@@ -992,6 +1009,7 @@ struct task_struct {
        unsigned int rt_priority;
        cputime_t utime, stime, utimescaled, stimescaled;
        cputime_t gtime;
+       cputime_t prev_utime, prev_stime;
        unsigned long nvcsw, nivcsw; /* context switch counts */
        struct timespec start_time;             /* monotonic time */
        struct timespec real_start_time;        /* boot based time */
@@ -1194,6 +1212,11 @@ static inline void set_task_session(struct task_struct *tsk, pid_t session)
        tsk->signal->__session = session;
 }
 
+static inline void set_task_pgrp(struct task_struct *tsk, pid_t pgrp)
+{
+       tsk->signal->__pgrp = pgrp;
+}
+
 static inline struct pid *task_pid(struct task_struct *task)
 {
        return task->pids[PIDTYPE_PID].pid;
@@ -1243,11 +1266,7 @@ static inline pid_t task_pid_nr(struct task_struct *tsk)
        return tsk->pid;
 }
 
-static inline pid_t task_pid_nr_ns(struct task_struct *tsk,
-               struct pid_namespace *ns)
-{
-       return pid_nr_ns(task_pid(tsk), ns);
-}
+pid_t task_pid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
 
 static inline pid_t task_pid_vnr(struct task_struct *tsk)
 {
@@ -1260,11 +1279,7 @@ static inline pid_t task_tgid_nr(struct task_struct *tsk)
        return tsk->tgid;
 }
 
-static inline pid_t task_tgid_nr_ns(struct task_struct *tsk,
-               struct pid_namespace *ns)
-{
-       return pid_nr_ns(task_tgid(tsk), ns);
-}
+pid_t task_tgid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
 
 static inline pid_t task_tgid_vnr(struct task_struct *tsk)
 {
@@ -1274,14 +1289,10 @@ static inline pid_t task_tgid_vnr(struct task_struct *tsk)
 
 static inline pid_t task_pgrp_nr(struct task_struct *tsk)
 {
-       return tsk->signal->pgrp;
+       return tsk->signal->__pgrp;
 }
 
-static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk,
-               struct pid_namespace *ns)
-{
-       return pid_nr_ns(task_pgrp(tsk), ns);
-}
+pid_t task_pgrp_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
 
 static inline pid_t task_pgrp_vnr(struct task_struct *tsk)
 {
@@ -1294,11 +1305,7 @@ static inline pid_t task_session_nr(struct task_struct *tsk)
        return tsk->signal->__session;
 }
 
-static inline pid_t task_session_nr_ns(struct task_struct *tsk,
-               struct pid_namespace *ns)
-{
-       return pid_nr_ns(task_session(tsk), ns);
-}
+pid_t task_session_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
 
 static inline pid_t task_session_vnr(struct task_struct *tsk)
 {
@@ -1453,12 +1460,17 @@ extern void sched_idle_next(void);
 
 #ifdef CONFIG_SCHED_DEBUG
 extern unsigned int sysctl_sched_latency;
-extern unsigned int sysctl_sched_nr_latency;
+extern unsigned int sysctl_sched_min_granularity;
 extern unsigned int sysctl_sched_wakeup_granularity;
 extern unsigned int sysctl_sched_batch_wakeup_granularity;
 extern unsigned int sysctl_sched_child_runs_first;
 extern unsigned int sysctl_sched_features;
 extern unsigned int sysctl_sched_migration_cost;
+extern unsigned int sysctl_sched_nr_migrate;
+
+int sched_nr_latency_handler(struct ctl_table *table, int write,
+               struct file *file, void __user *buffer, size_t *length,
+               loff_t *ppos);
 #endif
 
 extern unsigned int sysctl_sched_compat_yield;
@@ -1523,9 +1535,8 @@ extern struct pid_namespace init_pid_ns;
  *      type and namespace specified
  * find_task_by_pid_ns():
  *      finds a task by its pid in the specified namespace
- * find_task_by_pid_type():
- *      finds a task by its global id with the specified type, e.g.
- *      by global session id
+ * find_task_by_vpid():
+ *      finds a task by its virtual pid
  * find_task_by_pid():
  *      finds a task by its global pid
  *
@@ -1535,12 +1546,10 @@ extern struct pid_namespace init_pid_ns;
 extern struct task_struct *find_task_by_pid_type_ns(int type, int pid,
                struct pid_namespace *ns);
 
-#define find_task_by_pid_ns(nr, ns)    \
-               find_task_by_pid_type_ns(PIDTYPE_PID, nr, ns)
-#define find_task_by_pid_type(type, nr)        \
-               find_task_by_pid_type_ns(type, nr, &init_pid_ns)
-#define find_task_by_pid(nr)           \
-               find_task_by_pid_type(PIDTYPE_PID, nr)
+extern struct task_struct *find_task_by_pid(pid_t nr);
+extern struct task_struct *find_task_by_vpid(pid_t nr);
+extern struct task_struct *find_task_by_pid_ns(pid_t nr,
+               struct pid_namespace *ns);
 
 extern void __set_special_pids(pid_t session, pid_t pgrp);
 
@@ -1728,6 +1737,12 @@ static inline int has_group_leader_pid(struct task_struct *p)
        return p->pid == p->tgid;
 }
 
+static inline
+int same_thread_group(struct task_struct *p1, struct task_struct *p2)
+{
+       return p1->tgid == p2->tgid;
+}
+
 static inline struct task_struct *next_thread(const struct task_struct *p)
 {
        return list_entry(rcu_dereference(p->thread_group.next),
@@ -1973,6 +1988,14 @@ static inline void inc_syscw(struct task_struct *tsk)
 }
 #endif
 
+#ifdef CONFIG_SMP
+void migration_init(void);
+#else
+static inline void migration_init(void)
+{
+}
+#endif
+
 #endif /* __KERNEL__ */
 
 #endif