Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[safe/jmp/linux-2.6] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4b1ebd3..78efe7c 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -192,6 +192,12 @@ print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 #define TASK_DEAD              64
 #define TASK_WAKEKILL          128
 #define TASK_WAKING            256
+#define TASK_STATE_MAX         512
+
+#define TASK_STATE_TO_CHAR_STR "RSDTtZXxKW"
+
+extern char ___assert_task_state[1 - 2*!!(
+               sizeof(TASK_STATE_TO_CHAR_STR)-1 != ilog2(TASK_STATE_MAX)+1)];
 
 /* Convenience macros for the sake of set_task_state */
 #define TASK_KILLABLE          (TASK_WAKEKILL | TASK_UNINTERRUPTIBLE)
@@ -304,6 +310,7 @@ extern void sched_show_task(struct task_struct *p);
 #ifdef CONFIG_DETECT_SOFTLOCKUP
 extern void softlockup_tick(void);
 extern void touch_softlockup_watchdog(void);
+extern void touch_softlockup_watchdog_sync(void);
 extern void touch_all_softlockup_watchdogs(void);
 extern int proc_dosoftlockup_thresh(struct ctl_table *table, int write,
                                    void __user *buffer,
@@ -317,6 +324,9 @@ static inline void softlockup_tick(void)
 static inline void touch_softlockup_watchdog(void)
 {
 }
+static inline void touch_softlockup_watchdog_sync(void)
+{
+}
 static inline void touch_all_softlockup_watchdogs(void)
 {
 }
@@ -371,6 +381,8 @@ extern int sysctl_max_map_count;
 
 #include <linux/aio.h>
 
+#ifdef CONFIG_MMU
+extern void arch_pick_mmap_layout(struct mm_struct *mm);
 extern unsigned long
 arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
                       unsigned long, unsigned long);
@@ -380,6 +392,9 @@ arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
                          unsigned long flags);
 extern void arch_unmap_area(struct mm_struct *, unsigned long);
 extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long);
+#else
+static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
+#endif
 
 #if USE_SPLIT_PTLOCKS
 /*
@@ -1091,7 +1106,8 @@ struct sched_class {
                              enum cpu_idle_type idle);
        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);
+       void (*task_waking) (struct rq *this_rq, struct task_struct *task);
+       void (*task_woken) (struct rq *this_rq, struct task_struct *task);
 
        void (*set_cpus_allowed)(struct task_struct *p,
                                 const struct cpumask *newmask);
@@ -1115,7 +1131,7 @@ struct sched_class {
                                         struct task_struct *task);
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
-       void (*moved_group) (struct task_struct *p);
+       void (*moved_group) (struct task_struct *p, int on_rq);
 #endif
 };
 
@@ -1174,7 +1190,6 @@ struct sched_entity {
        u64                     nr_failed_migrations_running;
        u64                     nr_failed_migrations_hot;
        u64                     nr_forced_migrations;
-       u64                     nr_forced2_migrations;
 
        u64                     nr_wakeups;
        u64                     nr_wakeups_sync;
@@ -1358,7 +1373,7 @@ struct task_struct {
        char comm[TASK_COMM_LEN]; /* executable name excluding path
                                     - access with [gs]et_task_comm (which lock
                                       it with task_lock())
-                                    - initialized normally by flush_old_exec */
+                                    - initialized normally by setup_new_exec */
 /* file system info */
        int link_count, total_link_count;
 #ifdef CONFIG_SYSVIPC
@@ -1410,7 +1425,7 @@ struct task_struct {
 #endif
 
        /* Protection of the PI data structures: */
-       spinlock_t pi_lock;
+       raw_spinlock_t pi_lock;
 
 #ifdef CONFIG_RT_MUTEXES
        /* PI waiters blocked on a rt_mutex held by this task */
@@ -1543,10 +1558,18 @@ struct task_struct {
        unsigned long trace_recursion;
 #endif /* CONFIG_TRACING */
        unsigned long stack_start;
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR /* memcg uses this to do batch job */
+       struct memcg_batch_info {
+               int do_batch;   /* incremented when batch uncharge started */
+               struct mem_cgroup *memcg; /* target memcg of uncharge */
+               unsigned long bytes;            /* uncharged usage */
+               unsigned long memsw_bytes; /* uncharged mem+swap usage */
+       } memcg_batch;
+#endif
 };
 
 /* Future-safe accessor for struct task_struct's cpus_allowed. */
-#define tsk_cpumask(tsk) (&(tsk)->cpus_allowed)
+#define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
 
 /*
  * Priority of a process goes from 0..MAX_PRIO-1, valid RT
@@ -1839,7 +1862,8 @@ static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask)
 extern int sched_clock_stable;
 #endif
 
-extern unsigned long long sched_clock(void);
+/* ftrace calls sched_clock() directly */
+extern unsigned long long notrace sched_clock(void);
 
 extern void sched_clock_init(void);
 extern u64 sched_clock_cpu(int cpu);
@@ -1902,13 +1926,22 @@ extern unsigned int sysctl_sched_wakeup_granularity;
 extern unsigned int sysctl_sched_shares_ratelimit;
 extern unsigned int sysctl_sched_shares_thresh;
 extern unsigned int sysctl_sched_child_runs_first;
+
+enum sched_tunable_scaling {
+       SCHED_TUNABLESCALING_NONE,
+       SCHED_TUNABLESCALING_LOG,
+       SCHED_TUNABLESCALING_LINEAR,
+       SCHED_TUNABLESCALING_END,
+};
+extern enum sched_tunable_scaling sysctl_sched_tunable_scaling;
+
 #ifdef CONFIG_SCHED_DEBUG
 extern unsigned int sysctl_sched_migration_cost;
 extern unsigned int sysctl_sched_nr_migrate;
 extern unsigned int sysctl_sched_time_avg;
 extern unsigned int sysctl_timer_migration;
 
-int sched_nr_latency_handler(struct ctl_table *table, int write,
+int sched_proc_update_handler(struct ctl_table *table, int write,
                void __user *buffer, size_t *length,
                loff_t *ppos);
 #endif
@@ -2064,7 +2097,6 @@ extern int kill_proc_info(int, struct siginfo *, pid_t);
 extern int do_notify_parent(struct task_struct *, int);
 extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
 extern void force_sig(int, struct task_struct *);
-extern void force_sig_specific(int, struct task_struct *);
 extern int send_sig(int, struct task_struct *, int);
 extern void zap_other_threads(struct task_struct *p);
 extern struct sigqueue *sigqueue_alloc(void);
@@ -2083,11 +2115,6 @@ static inline int kill_cad_pid(int sig, int priv)
 #define SEND_SIG_PRIV  ((struct siginfo *) 1)
 #define SEND_SIG_FORCED        ((struct siginfo *) 2)
 
-static inline int is_si_special(const struct siginfo *info)
-{
-       return info <= SEND_SIG_FORCED;
-}
-
 /*
  * True if we are on the alternate signal stack.
  */
@@ -2473,8 +2500,6 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
 
 #endif /* CONFIG_SMP */
 
-extern void arch_pick_mmap_layout(struct mm_struct *mm);
-
 #ifdef CONFIG_TRACING
 extern void
 __trace_special(void *__tr, void *__data,
@@ -2583,7 +2608,27 @@ static inline void mm_init_owner(struct mm_struct *mm, struct task_struct *p)
 }
 #endif /* CONFIG_MM_OWNER */
 
-#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
+static inline unsigned long task_rlimit(const struct task_struct *tsk,
+               unsigned int limit)
+{
+       return ACCESS_ONCE(tsk->signal->rlim[limit].rlim_cur);
+}
+
+static inline unsigned long task_rlimit_max(const struct task_struct *tsk,
+               unsigned int limit)
+{
+       return ACCESS_ONCE(tsk->signal->rlim[limit].rlim_max);
+}
+
+static inline unsigned long rlimit(unsigned int limit)
+{
+       return task_rlimit(current, limit);
+}
+
+static inline unsigned long rlimit_max(unsigned int limit)
+{
+       return task_rlimit_max(current, limit);
+}
 
 #endif /* __KERNEL__ */