extern void calc_global_load(unsigned long ticks);
extern void update_cpu_load_nohz(void);
+/* Notifier for when a task gets migrated to a new CPU */
+struct task_migration_notifier {
+ struct task_struct *task;
+ int from_cpu;
+ int to_cpu;
+};
+extern void register_task_migration_notifier(struct notifier_block *n);
+
extern unsigned long get_parent_ip(unsigned long addr);
+extern void dump_cpu_task(int cpu);
+
struct seq_file;
struct cfs_rq;
struct task_group;
u32 incr_error;
};
+/**
+ * struct cputime - snaphsot of system and user cputime
+ * @utime: time spent in user mode
+ * @stime: time spent in system mode
+ *
+ * Gathers a generic snapshot of user and system time.
+ */
+struct cputime {
+ cputime_t utime;
+ cputime_t stime;
+};
+
/**
* struct task_cputime - collected CPU time counts
* @utime: time spent in user mode, in &cputime_t units
* @stime: time spent in kernel mode, in &cputime_t units
* @sum_exec_runtime: total time spent on the CPU, in nanoseconds
*
- * This structure groups together three kinds of CPU time that are
- * tracked for threads and thread groups. Most things considering
+ * This is an extension of struct cputime that includes the total runtime
+ * spent by the task from the scheduler point of view.
+ *
+ * As a result, this structure groups together three kinds of CPU time
+ * that are tracked for threads and thread groups. Most things considering
* CPU time want to group these counts together and treat all three
* of them in parallel.
*/
cputime_t gtime;
cputime_t cgtime;
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
- cputime_t prev_utime, prev_stime;
+ struct cputime prev_cputime;
#endif
unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
struct rw_semaphore group_rwsem;
#endif
- int oom_score_adj; /* OOM kill score adjustment */
- int oom_score_adj_min; /* OOM kill score adjustment minimum value.
- * Only settable by CAP_SYS_RESOURCE. */
+ oom_flags_t oom_flags;
+ short oom_score_adj; /* OOM kill score adjustment */
+ short oom_score_adj_min; /* OOM kill score adjustment min value.
+ * Only settable by CAP_SYS_RESOURCE. */
struct mutex cred_guard_mutex; /* guard against foreign influences on
* credential calculations
#ifdef CONFIG_SMP
int (*select_task_rq)(struct task_struct *p, int sd_flag, int flags);
+ void (*migrate_task_rq)(struct task_struct *p, int next_cpu);
void (*pre_schedule) (struct rq *this_rq, struct task_struct *task);
void (*post_schedule) (struct rq *this_rq);
unsigned long weight, inv_weight;
};
+struct sched_avg {
+ /*
+ * These sums represent an infinite geometric series and so are bound
+ * above by 1024/(1-y). Thus we only need a u32 to store them for for all
+ * choices of y < 1-2^(-32)*1024.
+ */
+ u32 runnable_avg_sum, runnable_avg_period;
+ u64 last_runnable_update;
+ s64 decay_count;
+ unsigned long load_avg_contrib;
+};
+
#ifdef CONFIG_SCHEDSTATS
struct sched_statistics {
u64 wait_start;
/* rq "owned" by this entity/group: */
struct cfs_rq *my_q;
#endif
+/*
+ * Load-tracking only depends on SMP, FAIR_GROUP_SCHED dependency below may be
+ * removed when useful for applications beyond shares distribution (e.g.
+ * load-balance).
+ */
+#if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED)
+ /* Per-entity load-tracking */
+ struct sched_avg avg;
+#endif
};
struct sched_rt_entity {
cputime_t utime, stime, utimescaled, stimescaled;
cputime_t gtime;
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
- cputime_t prev_utime, prev_stime;
+ struct cputime prev_cputime;
#endif
unsigned long nvcsw, nivcsw; /* context switch counts */
struct timespec start_time; /* monotonic time */
short il_next;
short pref_node_fork;
#endif
+#ifdef CONFIG_NUMA_BALANCING
+ int numa_scan_seq;
+ int numa_migrate_seq;
+ unsigned int numa_scan_period;
+ u64 node_stamp; /* migration stamp */
+ struct callback_head numa_work;
+#endif /* CONFIG_NUMA_BALANCING */
+
struct rcu_head rcu;
/*
unsigned long nr_pages; /* uncharged usage */
unsigned long memsw_nr_pages; /* uncharged mem+swap usage */
} memcg_batch;
+ unsigned int memcg_kmem_skip_account;
#endif
#ifdef CONFIG_HAVE_HW_BREAKPOINT
atomic_t ptrace_bp_refcnt;
/* Future-safe accessor for struct task_struct's cpus_allowed. */
#define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
+#ifdef CONFIG_NUMA_BALANCING
+extern void task_numa_fault(int node, int pages, bool migrated);
+extern void set_numabalancing_state(bool enabled);
+#else
+static inline void task_numa_fault(int node, int pages, bool migrated)
+{
+}
+static inline void set_numabalancing_state(bool enabled)
+{
+}
+#endif
+
/*
* Priority of a process goes from 0..MAX_PRIO-1, valid RT
* priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH
return tsk->pid == 1;
}
-/*
- * is_container_init:
- * check whether in the task is init in its own pid namespace.
- */
-extern int is_container_init(struct task_struct *tsk);
-
extern struct pid *cad_pid;
extern void free_task(struct task_struct *tsk);
__put_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 void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st);
+extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st);
/*
* Per process flags
#endif
-static inline void rcu_switch(struct task_struct *prev,
- struct task_struct *next)
-{
-#ifdef CONFIG_RCU_USER_QS
- rcu_user_hooks_switch(prev, next);
-#endif
-}
-
static inline void tsk_restore_flags(struct task_struct *task,
unsigned long orig_flags, unsigned long flags)
{
};
extern enum sched_tunable_scaling sysctl_sched_tunable_scaling;
+extern unsigned int sysctl_numa_balancing_scan_delay;
+extern unsigned int sysctl_numa_balancing_scan_period_min;
+extern unsigned int sysctl_numa_balancing_scan_period_max;
+extern unsigned int sysctl_numa_balancing_scan_period_reset;
+extern unsigned int sysctl_numa_balancing_scan_size;
+extern unsigned int sysctl_numa_balancing_settle_count;
+
#ifdef CONFIG_SCHED_DEBUG
extern unsigned int sysctl_sched_migration_cost;
extern unsigned int sysctl_sched_nr_migrate;
projects / ~andy / linux / blobdiff