Merge branch 'misc' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc...

[pandora-kernel.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index d04186d..29b7d4f 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -100,6 +100,7 @@ DECLARE_PER_CPU(unsigned long, process_counts);
 extern int nr_processes(void);
 extern unsigned long nr_running(void);
 extern unsigned long nr_uninterruptible(void);
+extern unsigned long nr_active(void);
 extern unsigned long nr_iowait(void);
 
 #include <linux/time.h>
@@ -483,6 +484,7 @@ struct signal_struct {
 #define MAX_PRIO               (MAX_RT_PRIO + 40)
 
 #define rt_task(p)             (unlikely((p)->prio < MAX_RT_PRIO))
+#define batch_task(p)          (unlikely((p)->policy == SCHED_BATCH))
 
 /*
  * Some day this will be a full-fledged user tracking system..
@@ -682,6 +684,14 @@ static inline void prefetch_stack(struct task_struct *t) { }
 
 struct audit_context;          /* See audit.c */
 struct mempolicy;
+struct pipe_inode_info;
+
+enum sleep_type {
+       SLEEP_NORMAL,
+       SLEEP_NONINTERACTIVE,
+       SLEEP_INTERACTIVE,
+       SLEEP_INTERRUPTED,
+};
 
 struct task_struct {
        volatile long state;    /* -1 unrunnable, 0 runnable, >0 stopped */
@@ -705,7 +715,7 @@ struct task_struct {
        unsigned long sleep_avg;
        unsigned long long timestamp, last_ran;
        unsigned long long sched_time; /* sched_clock time spent running */
-       int activated;
+       enum sleep_type sleep_type;
 
        unsigned long policy;
        cpumask_t cpus_allowed;
@@ -751,7 +761,7 @@ struct task_struct {
        struct task_struct *group_leader;       /* threadgroup leader */
 
        /* PID/PID hash table linkage. */
-       struct pid pids[PIDTYPE_MAX];
+       struct pid_link pids[PIDTYPE_MAX];
        struct list_head thread_group;
 
        struct completion *vfork_done;          /* for vfork() */
@@ -873,6 +883,11 @@ struct task_struct {
 
        atomic_t fs_excl;       /* holding fs exclusive resources */
        struct rcu_head rcu;
+
+       /*
+        * cache last used pipe for splice
+        */
+       struct pipe_inode_info *splice_pipe;
 };
 
 static inline pid_t process_group(struct task_struct *tsk)
@@ -890,18 +905,18 @@ static inline pid_t process_group(struct task_struct *tsk)
  */
 static inline int pid_alive(struct task_struct *p)
 {
-       return p->pids[PIDTYPE_PID].nr != 0;
+       return p->pids[PIDTYPE_PID].pid != NULL;
 }
 
 extern void free_task(struct task_struct *tsk);
 #define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
 
-extern void __put_task_struct_cb(struct rcu_head *rhp);
+extern void __put_task_struct(struct task_struct *t);
 
 static inline void put_task_struct(struct task_struct *t)
 {
        if (atomic_dec_and_test(&t->usage))
-               call_rcu(&t->rcu, __put_task_struct_cb);
+               __put_task_struct(t);
 }
 
 /*
@@ -1177,8 +1192,7 @@ extern void wait_task_inactive(task_t * p);
 #define remove_parent(p)       list_del_init(&(p)->sibling)
 #define add_parent(p)          list_add_tail(&(p)->sibling,&(p)->parent->children)
 
-#define next_task(p)   list_entry((p)->tasks.next, struct task_struct, tasks)
-#define prev_task(p)   list_entry((p)->tasks.prev, struct task_struct, tasks)
+#define next_task(p)   list_entry(rcu_dereference((p)->tasks.next), struct task_struct, tasks)
 
 #define for_each_process(p) \
        for (p = &init_task ; (p = next_task(p)) != &init_task ; )
@@ -1193,9 +1207,10 @@ extern void wait_task_inactive(task_t * p);
 #define while_each_thread(g, t) \
        while ((t = next_thread(t)) != g)
 
-#define thread_group_leader(p) (p->pid == p->tgid)
+/* de_thread depends on thread_group_leader not being a pid based check */
+#define thread_group_leader(p) (p == p->group_leader)
 
-static inline task_t *next_thread(task_t *p)
+static inline task_t *next_thread(const task_t *p)
 {
        return list_entry(rcu_dereference(p->thread_group.next),
                                task_t, thread_group);