Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

[linux-flexiantxendom0-3.2.10.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c0c5876..f044f66 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -273,9 +273,11 @@ extern int runqueue_is_locked(int cpu);
 
 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ)
 extern void select_nohz_load_balancer(int stop_tick);
+extern void set_cpu_sd_state_idle(void);
 extern int get_nohz_timer_target(void);
 #else
 static inline void select_nohz_load_balancer(int stop_tick) { }
+static inline void set_cpu_sd_state_idle(void) { }
 #endif
 
 /*
@@ -483,8 +485,8 @@ struct task_cputime {
 
 #define INIT_CPUTIME   \
        (struct task_cputime) {                                 \
-               .utime = cputime_zero,                          \
-               .stime = cputime_zero,                          \
+               .utime = 0,                                     \
+               .stime = 0,                                     \
                .sum_exec_runtime = 0,                          \
        }
 
@@ -903,6 +905,10 @@ struct sched_group_power {
         * single CPU.
         */
        unsigned int power, power_orig;
+       /*
+        * Number of busy cpus in this group.
+        */
+       atomic_t nr_busy_cpus;
 };
 
 struct sched_group {
@@ -927,6 +933,15 @@ static inline struct cpumask *sched_group_cpus(struct sched_group *sg)
        return to_cpumask(sg->cpumask);
 }
 
+/**
+ * group_first_cpu - Returns the first cpu in the cpumask of a sched_group.
+ * @group: The group whose first cpu is to be returned.
+ */
+static inline unsigned int group_first_cpu(struct sched_group *group)
+{
+       return cpumask_first(sched_group_cpus(group));
+}
+
 struct sched_domain_attr {
        int relax_domain_level;
 };
@@ -1317,8 +1332,8 @@ struct task_struct {
         * older sibling, respectively.  (p->father can be replaced with 
         * p->real_parent->pid)
         */
-       struct task_struct *real_parent; /* real parent process */
-       struct task_struct *parent; /* recipient of SIGCHLD, wait4() reports */
+       struct task_struct __rcu *real_parent; /* real parent process */
+       struct task_struct __rcu *parent; /* recipient of SIGCHLD, wait4() reports */
        /*
         * children/sibling forms the list of my natural children
         */
@@ -2070,6 +2085,14 @@ extern int sched_setscheduler(struct task_struct *, int,
 extern int sched_setscheduler_nocheck(struct task_struct *, int,
                                      const struct sched_param *);
 extern struct task_struct *idle_task(int cpu);
+/**
+ * is_idle_task - is the specified task an idle task?
+ * @tsk: the task in question.
+ */
+static inline bool is_idle_task(struct task_struct *p)
+{
+       return p->pid == 0;
+}
 extern struct task_struct *curr_task(int cpu);
 extern void set_curr_task(int cpu, struct task_struct *p);