/* signal handlers */
struct signal_struct *signal;
struct sighand_struct *sighand;
+
sigset_t blocked, real_blocked;
struct sigpending pending;
atomic_inc(&u->__count);
return u;
}
-
extern void free_uid(struct user_struct *);
extern void switch_uid(struct user_struct *);
}
#endif
-
/*
* Routines for handling mm_structs
*/
#endif /* CONFIG_SMP */
-/* API for registering delay info */
-#ifdef CONFIG_DELAY_ACCT
-
-#define test_delay_flag(tsk,flg) ((tsk)->flags & (flg))
-#define set_delay_flag(tsk,flg) ((tsk)->flags |= (flg))
-#define clear_delay_flag(tsk,flg) ((tsk)->flags &= ~(flg))
-
-#define def_delay_var(var) unsigned long long var
-#define get_delay(tsk,field) ((tsk)->delays.field)
-
-#define start_delay(var) ((var) = sched_clock())
-#define start_delay_set(var,flg) (set_delay_flag(current,flg),(var) = sched_clock())
-
-#define inc_delay(tsk,field) (((tsk)->delays.field)++)
-
-/* because of hardware timer drifts in SMPs and task continue on different cpu
- * then where the start_ts was taken there is a possibility that
- * end_ts < start_ts by some usecs. In this case we ignore the diff
- * and add nothing to the total.
- */
-#ifdef CONFIG_SMP
-#define test_ts_integrity(start_ts,end_ts) (likely((end_ts) > (start_ts)))
-#else
-#define test_ts_integrity(start_ts,end_ts) (1)
-#endif
-
-#define add_delay_ts(tsk,field,start_ts,end_ts) \
- do { if (test_ts_integrity(start_ts,end_ts)) (tsk)->delays.field += ((end_ts)-(start_ts)); } while (0)
-
-#define add_delay_clear(tsk,field,start_ts,flg) \
- do { \
- unsigned long long now = sched_clock();\
- add_delay_ts(tsk,field,start_ts,now); \
- clear_delay_flag(tsk,flg); \
- } while (0)
-
-static inline void add_io_delay(unsigned long long dstart)
-{
- struct task_struct * tsk = current;
- unsigned long long now = sched_clock();
- unsigned long long val;
-
- if (test_ts_integrity(dstart,now))
- val = now - dstart;
- else
- val = 0;
- if (test_delay_flag(tsk,PF_MEMIO)) {
- tsk->delays.mem_iowait_total += val;
- tsk->delays.num_memwaits++;
- } else {
- tsk->delays.iowait_total += val;
- tsk->delays.num_iowaits++;
- }
- clear_delay_flag(tsk,PF_IOWAIT);
-}
-
-inline static void init_delays(struct task_struct *tsk)
-{
- memset((void*)&tsk->delays,0,sizeof(tsk->delays));
-}
-
-#else
-
-#define test_delay_flag(tsk,flg) (0)
-#define set_delay_flag(tsk,flg) do { } while (0)
-#define clear_delay_flag(tsk,flg) do { } while (0)
-
-#define def_delay_var(var)
-#define get_delay(tsk,field) (0)
-
-#define start_delay(var) do { } while (0)
-#define start_delay_set(var,flg) do { } while (0)
-
-#define inc_delay(tsk,field) do { } while (0)
-#define add_delay_ts(tsk,field,start_ts,now) do { } while (0)
-#define add_delay_clear(tsk,field,start_ts,flg) do { } while (0)
-#define add_io_delay(dstart) do { } while (0)
-#define init_delays(tsk) do { } while (0)
-#endif
-
-
-
#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
extern void arch_pick_mmap_layout(struct mm_struct *mm);
#else