Merge remote-tracking branch 'stable/linux-3.0.y' into develop-3.0

[firefly-linux-kernel-4.4.55.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index a837b20ba190330c23b59ec5a3fb584fc9f6308f..5039e0af0cdfcd31d1774fbcb72844cf6d102537 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -808,7 +808,7 @@ enum cpu_idle_type {
  * when BITS_PER_LONG <= 32 are pretty high and the returns do not justify the
  * increased costs.
  */
-#if BITS_PER_LONG > 32
+#if 0 /* BITS_PER_LONG > 32 -- currently broken: it increases power usage under light load  */
 # define SCHED_LOAD_RESOLUTION 10
 # define scale_load(w)         ((w) << SCHED_LOAD_RESOLUTION)
 # define scale_load_down(w)    ((w) >> SCHED_LOAD_RESOLUTION)
@@ -844,6 +844,7 @@ enum cpu_idle_type {
 #define SD_SERIALIZE           0x0400  /* Only a single load balancing instance */
 #define SD_ASYM_PACKING                0x0800  /* Place busy groups earlier in the domain */
 #define SD_PREFER_SIBLING      0x1000  /* Prefer to place tasks in a sibling domain */
+#define SD_OVERLAP             0x2000  /* sched_domains of this level overlap */
 
 enum powersavings_balance_level {
        POWERSAVINGS_BALANCE_NONE = 0,  /* No power saving load balance */
@@ -893,16 +894,21 @@ static inline int sd_power_saving_flags(void)
        return 0;
 }
 
-struct sched_group {
-       struct sched_group *next;       /* Must be a circular list */
+struct sched_group_power {
        atomic_t ref;
-
        /*
         * CPU power of this group, SCHED_LOAD_SCALE being max power for a
         * single CPU.
         */
-       unsigned int cpu_power, cpu_power_orig;
+       unsigned int power, power_orig;
+};
+
+struct sched_group {
+       struct sched_group *next;       /* Must be a circular list */
+       atomic_t ref;
+
        unsigned int group_weight;
+       struct sched_group_power *sgp;
 
        /*
         * The CPUs this group covers.
@@ -1229,6 +1235,9 @@ struct task_struct {
        const struct sched_class *sched_class;
        struct sched_entity se;
        struct sched_rt_entity rt;
+#ifdef CONFIG_CGROUP_SCHED
+       struct task_group *sched_task_group;
+#endif
 
 #ifdef CONFIG_PREEMPT_NOTIFIERS
        /* list of struct preempt_notifier: */
@@ -1254,6 +1263,9 @@ struct task_struct {
 #ifdef CONFIG_PREEMPT_RCU
        int rcu_read_lock_nesting;
        char rcu_read_unlock_special;
+#if defined(CONFIG_RCU_BOOST) && defined(CONFIG_TREE_PREEMPT_RCU)
+       int rcu_boosted;
+#endif /* #if defined(CONFIG_RCU_BOOST) && defined(CONFIG_TREE_PREEMPT_RCU) */
        struct list_head rcu_node_entry;
 #endif /* #ifdef CONFIG_PREEMPT_RCU */
 #ifdef CONFIG_TREE_PREEMPT_RCU
@@ -1475,7 +1487,7 @@ struct task_struct {
 #endif
 #ifdef CONFIG_CPUSETS
        nodemask_t mems_allowed;        /* Protected by alloc_lock */
-       int mems_allowed_change_disable;
+       seqcount_t mems_allowed_seq;    /* Seqence no to catch updates */
        int cpuset_mem_spread_rotor;
        int cpuset_slab_spread_rotor;
 #endif
@@ -1745,6 +1757,9 @@ static inline void put_task_struct(struct task_struct *t)
 extern void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st);
 extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st);
 
+extern int task_free_register(struct notifier_block *n);
+extern int task_free_unregister(struct notifier_block *n);
+
 /*
  * Per process flags
  */
@@ -1928,7 +1943,6 @@ static inline void disable_sched_clock_irqtime(void) {}
 
 extern unsigned long long
 task_sched_runtime(struct task_struct *task);
-extern unsigned long long thread_group_sched_runtime(struct task_struct *task);
 
 /* sched_exec is called by processes performing an exec */
 #ifdef CONFIG_SMP
@@ -2605,7 +2619,7 @@ extern int sched_group_set_rt_period(struct task_group *tg,
 extern long sched_group_rt_period(struct task_group *tg);
 extern int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk);
 #endif
-#endif
+#endif /* CONFIG_CGROUP_SCHED */
 
 extern int task_can_switch_user(struct user_struct *up,
                                        struct task_struct *tsk);