Merge commit 'v2.6.28-rc7'; branch 'x86/dumpstack' into tracing/ftrace

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

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5c38db536e07f8b7b0d6e5b0dc4f31a9e3cb07c1..2d0a93c3122837ea55d8a51dd4113313a0181629 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -96,6 +96,7 @@ struct exec_domain;
 struct futex_pi_state;
 struct robust_list_head;
 struct bio;
+struct bts_tracer;
 
 /*
  * List of flags we want to share for kernel threads,
@@ -247,6 +248,7 @@ extern void init_idle(struct task_struct *idle, int cpu);
 extern void init_idle_bootup_task(struct task_struct *idle);
 
 extern int runqueue_is_locked(void);
+extern void task_rq_unlock_wait(struct task_struct *p);
 
 extern cpumask_t nohz_cpu_mask;
 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ)
@@ -287,7 +289,6 @@ 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);
-extern void hrtick_resched(void);
 
 extern void sched_show_task(struct task_struct *p);
 
@@ -630,6 +631,10 @@ struct user_struct {
        atomic_t inotify_watches; /* How many inotify watches does this user have? */
        atomic_t inotify_devs;  /* How many inotify devs does this user have opened? */
 #endif
+#ifdef CONFIG_EPOLL
+       atomic_t epoll_devs;    /* The number of epoll descriptors currently open */
+       atomic_t epoll_watches; /* The number of file descriptors currently watched */
+#endif
 #ifdef CONFIG_POSIX_MQUEUE
        /* protected by mq_lock */
        unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */
@@ -681,10 +686,6 @@ struct sched_info {
 };
 #endif /* defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) */
 
-#ifdef CONFIG_SCHEDSTATS
-extern const struct file_operations proc_schedstat_operations;
-#endif /* CONFIG_SCHEDSTATS */
-
 #ifdef CONFIG_TASK_DELAY_ACCT
 struct task_delay_info {
        spinlock_t      lock;
@@ -941,7 +942,6 @@ struct sched_class {
        void (*enqueue_task) (struct rq *rq, struct task_struct *p, int wakeup);
        void (*dequeue_task) (struct rq *rq, struct task_struct *p, int sleep);
        void (*yield_task) (struct rq *rq);
-       int  (*select_task_rq)(struct task_struct *p, int sync);
 
        void (*check_preempt_curr) (struct rq *rq, struct task_struct *p, int sync);
 
@@ -949,6 +949,8 @@ 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 sync);
+
        unsigned long (*load_balance) (struct rq *this_rq, int this_cpu,
                        struct rq *busiest, unsigned long max_load_move,
                        struct sched_domain *sd, enum cpu_idle_type idle,
@@ -960,16 +962,17 @@ struct sched_class {
        void (*pre_schedule) (struct rq *this_rq, struct task_struct *task);
        void (*post_schedule) (struct rq *this_rq);
        void (*task_wake_up) (struct rq *this_rq, struct task_struct *task);
-#endif
 
-       void (*set_curr_task) (struct rq *rq);
-       void (*task_tick) (struct rq *rq, struct task_struct *p, int queued);
-       void (*task_new) (struct rq *rq, struct task_struct *p);
        void (*set_cpus_allowed)(struct task_struct *p,
                                 const cpumask_t *newmask);
 
        void (*rq_online)(struct rq *rq);
        void (*rq_offline)(struct rq *rq);
+#endif
+
+       void (*set_curr_task) (struct rq *rq);
+       void (*task_tick) (struct rq *rq, struct task_struct *p, int queued);
+       void (*task_new) (struct rq *rq, struct task_struct *p);
 
        void (*switched_from) (struct rq *this_rq, struct task_struct *task,
                               int running);
@@ -1163,6 +1166,18 @@ struct task_struct {
        struct list_head ptraced;
        struct list_head ptrace_entry;
 
+#ifdef CONFIG_X86_PTRACE_BTS
+       /*
+        * This is the tracer handle for the ptrace BTS extension.
+        * This field actually belongs to the ptracer task.
+        */
+       struct bts_tracer *bts;
+       /*
+        * The buffer to hold the BTS data.
+        */
+       void *bts_buffer;
+#endif /* CONFIG_X86_PTRACE_BTS */
+
        /* PID/PID hash table linkage. */
        struct pid_link pids[PIDTYPE_MAX];
        struct list_head thread_group;
@@ -1345,6 +1360,25 @@ struct task_struct {
 #ifdef CONFIG_LATENCYTOP
        int latency_record_count;
        struct latency_record latency_record[LT_SAVECOUNT];
+#endif
+       /*
+        * time slack values; these are used to round up poll() and
+        * select() etc timeout values. These are in nanoseconds.
+        */
+       unsigned long timer_slack_ns;
+       unsigned long default_timer_slack_ns;
+
+       struct list_head        *scm_work_list;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+       /* Index of current stored adress in ret_stack */
+       int curr_ret_stack;
+       /* Stack of return addresses for return function tracing */
+       struct ftrace_ret_stack *ret_stack;
+       /*
+        * Number of functions that haven't been traced
+        * because of depth overrun.
+        */
+       atomic_t trace_overrun;
 #endif
 };
 
@@ -1665,6 +1699,7 @@ extern unsigned int sysctl_sched_features;
 extern unsigned int sysctl_sched_migration_cost;
 extern unsigned int sysctl_sched_nr_migrate;
 extern unsigned int sysctl_sched_shares_ratelimit;
+extern unsigned int sysctl_sched_shares_thresh;
 
 int sched_nr_latency_handler(struct ctl_table *table, int write,
                struct file *file, void __user *buffer, size_t *length,