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[PATCH] hrtimer: convert posix timers completely

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- 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>
This commit is contained in:
Thomas Gleixner
2006-01-09 20:52:38 -08:00
committed by Linus Torvalds
parent 97735f25d2
commit becf8b5d00
5 changed files with 149 additions and 622 deletions
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7
include/linux/hrtimer.h
View File

@@ -93,6 +93,13 @@ struct hrtimer_base {
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: */

37
include/linux/posix-timers.h
View File

@@ -51,12 +51,8 @@ struct k_itimer {
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 @@ struct k_itimer {
} 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 @@ int do_posix_clock_nosettime(const clockid_t, struct timespec *tp);
/* 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);

3
include/linux/time.h
View File

@@ -73,8 +73,7 @@ struct timespec current_kernel_time(void);
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,