summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--include/linux/posix-timers.h80
1 files changed, 44 insertions, 36 deletions
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index ecda38e07899..ae51473d3d48 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -42,7 +42,7 @@ struct k_itimer {
timer_t it_id; /* timer id */
int it_overrun; /* overrun on pending signal */
int it_overrun_last; /* overrun on last delivered signal */
- int it_requeue_pending; /* waiting to requeue this timer */
+ int it_requeue_pending; /* waiting to requeue this timer */
#define REQUEUE_PENDING 1
int it_sigev_notify; /* notify word of sigevent struct */
int it_sigev_signo; /* signo word of sigevent struct */
@@ -52,8 +52,10 @@ struct k_itimer {
union {
struct {
struct timer_list timer;
- struct list_head abs_timer_entry; /* clock abs_timer_list */
- struct timespec wall_to_prev; /* wall_to_monotonic used when set */
+ /* clock abs_timer_list: */
+ struct list_head abs_timer_entry;
+ /* wall_to_monotonic used when set: */
+ struct timespec wall_to_prev;
unsigned long incr; /* interval in jiffies */
} real;
struct cpu_timer_list cpu;
@@ -70,14 +72,16 @@ struct k_clock_abs {
struct list_head list;
spinlock_t lock;
};
+
struct k_clock {
- int res; /* in nano seconds */
+ int res; /* in nanoseconds */
int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
struct k_clock_abs *abs_struct;
int (*clock_set) (const clockid_t which_clock, struct timespec * tp);
int (*clock_get) (const clockid_t which_clock, struct timespec * tp);
int (*timer_create) (struct k_itimer *timer);
- int (*nsleep) (const clockid_t which_clock, int flags, struct timespec *);
+ int (*nsleep) (const clockid_t which_clock, int flags,
+ struct timespec *);
int (*timer_set) (struct k_itimer * timr, int flags,
struct itimerspec * new_setting,
struct itimerspec * old_setting);
@@ -89,7 +93,7 @@ struct k_clock {
void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);
-/* Error handlers for timer_create, nanosleep and settime */
+/* error handlers for timer_create, nanosleep and settime */
int do_posix_clock_notimer_create(struct k_itimer *timer);
int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *);
int do_posix_clock_nosettime(const clockid_t, struct timespec *tp);
@@ -101,39 +105,43 @@ struct now_struct {
unsigned long jiffies;
};
-#define posix_get_now(now) (now)->jiffies = jiffies;
+#define posix_get_now(now) \
+ do { (now)->jiffies = jiffies; } while (0)
+
#define posix_time_before(timer, now) \
time_before((timer)->expires, (now)->jiffies)
#define posix_bump_timer(timr, now) \
- do { \
- long delta, orun; \
- delta = now.jiffies - (timr)->it.real.timer.expires; \
- if (delta >= 0) { \
- orun = 1 + (delta / (timr)->it.real.incr); \
- (timr)->it.real.timer.expires += \
- orun * (timr)->it.real.incr; \
- (timr)->it_overrun += orun; \
- } \
- }while (0)
-
-int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *);
-int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *);
-int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *tp);
-int posix_cpu_timer_create(struct k_itimer *);
-int posix_cpu_nsleep(const clockid_t, int, struct timespec *);
-int posix_cpu_timer_set(struct k_itimer *, int,
- struct itimerspec *, struct itimerspec *);
-int posix_cpu_timer_del(struct k_itimer *);
-void posix_cpu_timer_get(struct k_itimer *, struct itimerspec *);
-
-void posix_cpu_timer_schedule(struct k_itimer *);
-
-void run_posix_cpu_timers(struct task_struct *);
-void posix_cpu_timers_exit(struct task_struct *);
-void posix_cpu_timers_exit_group(struct task_struct *);
-
-void set_process_cpu_timer(struct task_struct *, unsigned int,
- cputime_t *, cputime_t *);
+ do { \
+ long delta, orun; \
+ \
+ delta = (now).jiffies - (timr)->it.real.timer.expires; \
+ if (delta >= 0) { \
+ orun = 1 + (delta / (timr)->it.real.incr); \
+ (timr)->it.real.timer.expires += \
+ orun * (timr)->it.real.incr; \
+ (timr)->it_overrun += orun; \
+ } \
+ } while (0)
+
+int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts);
+int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts);
+int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts);
+int posix_cpu_timer_create(struct k_itimer *timer);
+int posix_cpu_nsleep(const clockid_t which_clock, int flags,
+ struct timespec *ts);
+int posix_cpu_timer_set(struct k_itimer *timer, int flags,
+ struct itimerspec *new, struct itimerspec *old);
+int posix_cpu_timer_del(struct k_itimer *timer);
+void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp);
+
+void posix_cpu_timer_schedule(struct k_itimer *timer);
+
+void run_posix_cpu_timers(struct task_struct *task);
+void posix_cpu_timers_exit(struct task_struct *task);
+void posix_cpu_timers_exit_group(struct task_struct *task);
+
+void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
+ cputime_t *newval, cputime_t *oldval);
#endif