sched: add new API sched_setscheduler_nocheck: add a flag to control access checks

[deliverable/linux.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0c35b0343a76bf20327af6a84b1be976493735e3..fe3b9b5d73905e5b6682faf1f590f4d90a402d9e 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -766,7 +766,6 @@ struct sched_domain {
        struct sched_domain *child;     /* bottom domain must be null terminated */
        struct sched_group *groups;     /* the balancing groups of the domain */
        cpumask_t span;                 /* span of all CPUs in this domain */
-       int first_cpu;                  /* cache of the first cpu in this domain */
        unsigned long min_interval;     /* Minimum balance interval ms */
        unsigned long max_interval;     /* Maximum balance interval ms */
        unsigned int busy_factor;       /* less balancing by factor if busy */
@@ -1656,6 +1655,8 @@ extern int can_nice(const struct task_struct *p, const int nice);
 extern int task_curr(const struct task_struct *p);
 extern int idle_cpu(int cpu);
 extern int sched_setscheduler(struct task_struct *, int, struct sched_param *);
+extern int sched_setscheduler_nocheck(struct task_struct *, int,
+                                     struct sched_param *);
 extern struct task_struct *idle_task(int cpu);
 extern struct task_struct *curr_task(int cpu);
 extern void set_curr_task(int cpu, struct task_struct *p);
@@ -1848,7 +1849,9 @@ extern void exit_thread(void);
 extern void exit_files(struct task_struct *);
 extern void __cleanup_signal(struct signal_struct *);
 extern void __cleanup_sighand(struct sighand_struct *);
+
 extern void exit_itimers(struct signal_struct *);
+extern void flush_itimer_signals(void);
 
 extern NORET_TYPE void do_group_exit(int);
 
@@ -2025,9 +2028,22 @@ static inline int fatal_signal_pending(struct task_struct *p)
        return signal_pending(p) && __fatal_signal_pending(p);
 }
 
+static inline int signal_pending_state(long state, struct task_struct *p)
+{
+       if (!(state & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
+               return 0;
+       if (!signal_pending(p))
+               return 0;
+
+       if (state & (__TASK_STOPPED | __TASK_TRACED))
+               return 0;
+
+       return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p);
+}
+
 static inline int need_resched(void)
 {
-       return unlikely(test_tsk_need_resched(current));
+       return unlikely(test_thread_flag(TIF_NEED_RESCHED));
 }
 
 /*
@@ -2037,13 +2053,13 @@ static inline int need_resched(void)
  * cond_resched_lock() will drop the spinlock before scheduling,
  * cond_resched_softirq() will enable bhs before scheduling.
  */
-#ifdef CONFIG_PREEMPT
+extern int _cond_resched(void);
+#ifdef CONFIG_PREEMPT_BKL
 static inline int cond_resched(void)
 {
        return 0;
 }
 #else
-extern int _cond_resched(void);
 static inline int cond_resched(void)
 {
        return _cond_resched();
@@ -2051,6 +2067,10 @@ static inline int cond_resched(void)
 #endif
 extern int cond_resched_lock(spinlock_t * lock);
 extern int cond_resched_softirq(void);
+static inline int cond_resched_bkl(void)
+{
+       return _cond_resched();
+}
 
 /*
  * Does a critical section need to be broken due to another