1 files changed, 27 insertions, 31 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index e0054c1b9a09..d04186d8cc68 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -35,6 +35,7 @@
 #include <linux/topology.h>
 #include <linux/seccomp.h>
 #include <linux/rcupdate.h>
+#include <linux/futex.h>
 
 #include <linux/auxvec.h>       /* For AT_VECTOR_SIZE */
 
@@ -354,16 +355,8 @@ struct sighand_struct {
         atomic_t                count;
         struct k_sigaction      action[_NSIG];
         spinlock_t              siglock;
-        struct rcu_head         rcu;
 };
 
-extern void sighand_free_cb(struct rcu_head *rhp);
-
-static inline void sighand_free(struct sighand_struct *sp)
-{
-        call_rcu(&sp->rcu, sighand_free_cb);
-}
-
 /*
  * NOTE! "signal_struct" does not have it's own
  * locking, because a shared signal_struct always
@@ -402,6 +395,7 @@ struct signal_struct {
 
         /* ITIMER_REAL timer for the process */
         struct hrtimer real_timer;
+        struct task_struct *tsk;
         ktime_t it_real_incr;
 
         /* ITIMER_PROF and ITIMER_VIRTUAL timers for the process */
@@ -758,6 +752,7 @@ struct task_struct {
 
         /* PID/PID hash table linkage. */
         struct pid pids[PIDTYPE_MAX];
+        struct list_head thread_group;
 
         struct completion *vfork_done;          /* for vfork() */
         int __user *set_child_tid;              /* CLONE_CHILD_SETTID */
@@ -871,6 +866,11 @@ struct task_struct {
         int cpuset_mems_generation;
         int cpuset_mem_spread_rotor;
 #endif
+        struct robust_list_head __user *robust_list;
+#ifdef CONFIG_COMPAT
+        struct compat_robust_list_head __user *compat_robust_list;
+#endif
+
         atomic_t fs_excl;       /* holding fs exclusive resources */
         struct rcu_head rcu;
 };
@@ -1094,7 +1094,6 @@ 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 int kill_pg(pid_t, int, int);
-extern int kill_sl(pid_t, int, int);
 extern int kill_proc(pid_t, int, int);
 extern struct sigqueue *sigqueue_alloc(void);
 extern void sigqueue_free(struct sigqueue *);
@@ -1151,10 +1150,8 @@ extern void flush_thread(void);
 extern void exit_thread(void);
 
 extern void exit_files(struct task_struct *);
-extern void exit_signal(struct task_struct *);
-extern void __exit_signal(struct task_struct *);
-extern void exit_sighand(struct task_struct *);
-extern void __exit_sighand(struct task_struct *);
+extern void __cleanup_signal(struct signal_struct *);
+extern void __cleanup_sighand(struct sighand_struct *);
 extern void exit_itimers(struct signal_struct *);
 
 extern NORET_TYPE void do_group_exit(int);
@@ -1178,19 +1175,7 @@ extern void wait_task_inactive(task_t * p);
 #endif
 
 #define remove_parent(p)        list_del_init(&(p)->sibling)
-#define add_parent(p, parent)   list_add_tail(&(p)->sibling,&(parent)->children)
-
-#define REMOVE_LINKS(p) do {                                    \
-        if (thread_group_leader(p))                             \
-                list_del_init(&(p)->tasks);                     \
-        remove_parent(p);                                       \
-        } while (0)
-
-#define SET_LINKS(p) do {                                       \
-        if (thread_group_leader(p))                             \
-                list_add_tail(&(p)->tasks,&init_task.tasks);    \
-        add_parent(p, (p)->parent);                             \
-        } while (0)
+#define add_parent(p)           list_add_tail(&(p)->sibling,&(p)->parent->children)
 
 #define next_task(p)    list_entry((p)->tasks.next, struct task_struct, tasks)
 #define prev_task(p)    list_entry((p)->tasks.prev, struct task_struct, tasks)
@@ -1208,20 +1193,22 @@ extern void wait_task_inactive(task_t * p);
 #define while_each_thread(g, t) \
         while ((t = next_thread(t)) != g)
 
-extern task_t * FASTCALL(next_thread(const task_t *p));
-
 #define thread_group_leader(p)  (p->pid == p->tgid)
 
+static inline task_t *next_thread(task_t *p)
+{
+        return list_entry(rcu_dereference(p->thread_group.next),
+                                task_t, thread_group);
+}
+
 static inline int thread_group_empty(task_t *p)
 {
-        return list_empty(&p->pids[PIDTYPE_TGID].pid_list);
+        return list_empty(&p->thread_group);
 }
 
 #define delay_group_leader(p) \
                 (thread_group_leader(p) && !thread_group_empty(p))
 
-extern void unhash_process(struct task_struct *p);
-
 /*
  * Protects ->fs, ->files, ->mm, ->ptrace, ->group_info, ->comm, keyring
  * subscriptions and synchronises with wait4().  Also used in procfs.  Also
@@ -1241,6 +1228,15 @@ static inline void task_unlock(struct task_struct *p)
         spin_unlock(&p->alloc_lock);
 }
 
+extern struct sighand_struct *lock_task_sighand(struct task_struct *tsk,
+                                                        unsigned long *flags);
+
+static inline void unlock_task_sighand(struct task_struct *tsk,
+                                                unsigned long *flags)
+{
+        spin_unlock_irqrestore(&tsk->sighand->siglock, *flags);
+}
+
 #ifndef __HAVE_THREAD_FUNCTIONS
 
 #define task_thread_info(task) (task)->thread_info