Merge commit 'v2.6.34-rc7' into perf/nmi

Merge reason: catch up with latest softlockup detector changes.

1 files changed, 22 insertions, 84 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6f7bba93929b..dad7f668ebf7 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -97,7 +97,7 @@ struct sched_param {
 struct exec_domain;
 struct futex_pi_state;
 struct robust_list_head;
-struct bio;
+struct bio_list;
 struct fs_struct;
 struct bts_context;
 struct perf_event_context;
@@ -258,6 +258,10 @@ extern spinlock_t mmlist_lock;
 
 struct task_struct;
 
+#ifdef CONFIG_PROVE_RCU
+extern int lockdep_tasklist_lock_is_held(void);
+#endif /* #ifdef CONFIG_PROVE_RCU */
+
 extern void sched_init(void);
 extern void sched_init_smp(void);
 extern asmlinkage void schedule_tail(struct task_struct *prev);
@@ -310,6 +314,7 @@ 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,
@@ -323,6 +328,9 @@ 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)
 {
 }
@@ -392,60 +400,6 @@ extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long);
 static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
 #endif
 
-#if USE_SPLIT_PTLOCKS
-/*
- * The mm counters are not protected by its page_table_lock,
- * so must be incremented atomically.
- */
-#define set_mm_counter(mm, member, value) atomic_long_set(&(mm)->_##member, value)
-#define get_mm_counter(mm, member) ((unsigned long)atomic_long_read(&(mm)->_##member))
-#define add_mm_counter(mm, member, value) atomic_long_add(value, &(mm)->_##member)
-#define inc_mm_counter(mm, member) atomic_long_inc(&(mm)->_##member)
-#define dec_mm_counter(mm, member) atomic_long_dec(&(mm)->_##member)
-
-#else  /* !USE_SPLIT_PTLOCKS */
-/*
- * The mm counters are protected by its page_table_lock,
- * so can be incremented directly.
- */
-#define set_mm_counter(mm, member, value) (mm)->_##member = (value)
-#define get_mm_counter(mm, member) ((mm)->_##member)
-#define add_mm_counter(mm, member, value) (mm)->_##member += (value)
-#define inc_mm_counter(mm, member) (mm)->_##member++
-#define dec_mm_counter(mm, member) (mm)->_##member--
-
-#endif /* !USE_SPLIT_PTLOCKS */
-
-#define get_mm_rss(mm)                                  \
-        (get_mm_counter(mm, file_rss) + get_mm_counter(mm, anon_rss))
-#define update_hiwater_rss(mm)  do {                    \
-        unsigned long _rss = get_mm_rss(mm);            \
-        if ((mm)->hiwater_rss < _rss)                   \
-                (mm)->hiwater_rss = _rss;               \
-} while (0)
-#define update_hiwater_vm(mm)   do {                    \
-        if ((mm)->hiwater_vm < (mm)->total_vm)          \
-                (mm)->hiwater_vm = (mm)->total_vm;      \
-} while (0)
-
-static inline unsigned long get_mm_hiwater_rss(struct mm_struct *mm)
-{
-        return max(mm->hiwater_rss, get_mm_rss(mm));
-}
-
-static inline void setmax_mm_hiwater_rss(unsigned long *maxrss,
-                                         struct mm_struct *mm)
-{
-        unsigned long hiwater_rss = get_mm_hiwater_rss(mm);
-
-        if (*maxrss < hiwater_rss)
-                *maxrss = hiwater_rss;
-}
-
-static inline unsigned long get_mm_hiwater_vm(struct mm_struct *mm)
-{
-        return max(mm->hiwater_vm, mm->total_vm);
-}
 
 extern void set_dumpable(struct mm_struct *mm, int value);
 extern int get_dumpable(struct mm_struct *mm);
@@ -736,14 +690,6 @@ struct user_struct {
         uid_t uid;
         struct user_namespace *user_ns;
 
-#ifdef CONFIG_USER_SCHED
-        struct task_group *tg;
-#ifdef CONFIG_SYSFS
-        struct kobject kobj;
-        struct delayed_work work;
-#endif
-#endif
-
 #ifdef CONFIG_PERF_EVENTS
         atomic_long_t locked_vm;
 #endif
@@ -874,7 +820,10 @@ static inline int sd_balance_for_mc_power(void)
         if (sched_smt_power_savings)
                 return SD_POWERSAVINGS_BALANCE;
 
-        return SD_PREFER_SIBLING;
+        if (!sched_mc_power_savings)
+                return SD_PREFER_SIBLING;
+
+        return 0;
 }
 
 static inline int sd_balance_for_package_power(void)
@@ -1080,7 +1029,8 @@ struct sched_domain;
 struct sched_class {
         const struct sched_class *next;
 
-        void (*enqueue_task) (struct rq *rq, struct task_struct *p, int wakeup);
+        void (*enqueue_task) (struct rq *rq, struct task_struct *p, int wakeup,
+                              bool head);
         void (*dequeue_task) (struct rq *rq, struct task_struct *p, int sleep);
         void (*yield_task) (struct rq *rq);
 
@@ -1092,14 +1042,6 @@ struct sched_class {
 #ifdef CONFIG_SMP
         int  (*select_task_rq)(struct task_struct *p, int sd_flag, int flags);
 
-        unsigned long (*load_balance) (struct rq *this_rq, int this_cpu,
-                        struct rq *busiest, unsigned long max_load_move,
-                        struct sched_domain *sd, enum cpu_idle_type idle,
-                        int *all_pinned, int *this_best_prio);
-
-        int (*move_one_task) (struct rq *this_rq, int this_cpu,
-                              struct rq *busiest, struct sched_domain *sd,
-                              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_waking) (struct rq *this_rq, struct task_struct *task);
@@ -1282,7 +1224,9 @@ struct task_struct {
         struct plist_node pushable_tasks;
 
         struct mm_struct *mm, *active_mm;
-
+#if defined(SPLIT_RSS_COUNTING)
+        struct task_rss_stat    rss_stat;
+#endif
 /* task state */
         int exit_state;
         int exit_code, exit_signal;
@@ -1369,7 +1313,7 @@ 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
@@ -1462,7 +1406,7 @@ struct task_struct {
         void *journal_info;
 
 /* stacked block device info */
-        struct bio *bio_list, **bio_tail;
+        struct bio_list *bio_list;
 
 /* VM state */
         struct reclaim_state *reclaim_state;
@@ -1533,7 +1477,7 @@ struct task_struct {
 
         struct list_head        *scm_work_list;
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
-        /* Index of current stored adress in ret_stack */
+        /* Index of current stored address in ret_stack */
         int curr_ret_stack;
         /* Stack of return addresses for return function tracing */
         struct ftrace_ret_stack *ret_stack;
@@ -2451,9 +2395,7 @@ void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times);
 
 static inline void thread_group_cputime_init(struct signal_struct *sig)
 {
-        sig->cputimer.cputime = INIT_CPUTIME;
         spin_lock_init(&sig->cputimer.lock);
-        sig->cputimer.running = 0;
 }
 
 static inline void thread_group_cputime_free(struct signal_struct *sig)
@@ -2513,13 +2455,9 @@ extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
 
 extern void normalize_rt_tasks(void);
 
-#ifdef CONFIG_GROUP_SCHED
+#ifdef CONFIG_CGROUP_SCHED
 
 extern struct task_group init_task_group;
-#ifdef CONFIG_USER_SCHED
-extern struct task_group root_task_group;
-extern void set_tg_uid(struct user_struct *user);
-#endif
 
 extern struct task_group *sched_create_group(struct task_group *parent);
 extern void sched_destroy_group(struct task_group *tg);