signal/timer/event: signalfd core

[linux-2.6-omap-h63xx.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 15ab3e039535eb7eb710f625b6fe58a699122464..97c0c7da58efe896e519ef3a5a338da716c2b052 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -391,6 +391,7 @@ struct sighand_struct {
        atomic_t                count;
        struct k_sigaction      action[_NSIG];
        spinlock_t              siglock;
+       struct list_head        signalfd_list;
 };
 
 struct pacct_struct {
@@ -469,6 +470,7 @@ struct signal_struct {
        cputime_t utime, stime, cutime, cstime;
        unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
        unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
+       unsigned long inblock, oublock, cinblock, coublock;
 
        /*
         * Cumulative ns of scheduled CPU time for dead threads in the
@@ -680,8 +682,14 @@ struct sched_group {
        /*
         * CPU power of this group, SCHED_LOAD_SCALE being max power for a
         * single CPU. This is read only (except for setup, hotplug CPU).
+        * Note : Never change cpu_power without recompute its reciprocal
         */
-       unsigned long cpu_power;
+       unsigned int __cpu_power;
+       /*
+        * reciprocal value of cpu_power to avoid expensive divides
+        * (see include/linux/reciprocal_div.h)
+        */
+       u32 reciprocal_cpu_power;
 };
 
 struct sched_domain {
@@ -811,7 +819,7 @@ struct prio_array;
 
 struct task_struct {
        volatile long state;    /* -1 unrunnable, 0 runnable, >0 stopped */
-       struct thread_info *thread_info;
+       void *stack;
        atomic_t usage;
        unsigned int flags;     /* per process flags, defined below */
        unsigned int ptrace;
@@ -1311,6 +1319,7 @@ extern int in_egroup_p(gid_t);
 
 extern void proc_caches_init(void);
 extern void flush_signals(struct task_struct *);
+extern void ignore_signals(struct task_struct *);
 extern void flush_signal_handlers(struct task_struct *, int force_default);
 extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info);
 
@@ -1506,8 +1515,8 @@ static inline void unlock_task_sighand(struct task_struct *tsk,
 
 #ifndef __HAVE_THREAD_FUNCTIONS
 
-#define task_thread_info(task) (task)->thread_info
-#define task_stack_page(task) ((void*)((task)->thread_info))
+#define task_thread_info(task) ((struct thread_info *)(task)->stack)
+#define task_stack_page(task)  ((task)->stack)
 
 static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org)
 {
@@ -1517,7 +1526,7 @@ static inline void setup_thread_stack(struct task_struct *p, struct task_struct
 
 static inline unsigned long *end_of_stack(struct task_struct *p)
 {
-       return (unsigned long *)(p->thread_info + 1);
+       return (unsigned long *)(task_thread_info(p) + 1);
 }
 
 #endif