[PATCH] hrtimer: convert posix timers completely
- convert posix-timers.c to use hrtimers
- remove the now obsolete abslist code
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 2ac20b4..cf5cfdf 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -93,6 +93,13 @@
struct hrtimer *curr_timer;
};
+/*
+ * clock_was_set() is a NOP for non- high-resolution systems. The
+ * time-sorted order guarantees that a timer does not expire early and
+ * is expired in the next softirq when the clock was advanced.
+ */
+#define clock_was_set() do { } while (0)
+
/* Exported timer functions: */
/* Initialize timers: */
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 3c0a5be..54faf52 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -51,12 +51,8 @@
struct sigqueue *sigq; /* signal queue entry. */
union {
struct {
- struct timer_list timer;
- /* 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 */
+ struct hrtimer timer;
+ ktime_t interval;
} real;
struct cpu_timer_list cpu;
struct {
@@ -68,15 +64,9 @@
} it;
};
-struct k_clock_abs {
- struct list_head list;
- spinlock_t lock;
-};
-
struct k_clock {
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);
@@ -102,29 +92,6 @@
/* function to call to trigger timer event */
int posix_timer_event(struct k_itimer *timr, int si_private);
-struct now_struct {
- unsigned long 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 *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);
diff --git a/include/linux/time.h b/include/linux/time.h
index f639fde..1201155 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -73,8 +73,7 @@
extern void do_gettimeofday(struct timeval *tv);
extern int do_settimeofday(struct timespec *tv);
extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);
-extern void clock_was_set(void); // call whenever the clock is set
-extern int do_posix_clock_monotonic_gettime(struct timespec *tp);
+#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
extern long do_utimes(char __user *filename, struct timeval *times);
struct itimerval;
extern int do_setitimer(int which, struct itimerval *value,