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Merge branch 'timers/range-hrtimers' into v28-range-hrtimers-for-linus-v2

Browse source 
Conflicts:

	kernel/time/tick-sched.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2008-10-22 09:48:06 +02:00
commit 268a3dcfea
30 changed files with 710 additions and 379 deletions
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105
include/linux/hrtimer.h
View file

@ -20,6 +20,8 @@
#include <linux/init.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/percpu.h>
struct hrtimer_clock_base;
struct hrtimer_cpu_base;
@ -101,9 +103,14 @@ enum hrtimer_cb_mode {
/**
* struct hrtimer - the basic hrtimer structure
* @node: red black tree node for time ordered insertion
* @expires: the absolute expiry time in the hrtimers internal
* @_expires: the absolute expiry time in the hrtimers internal
* representation. The time is related to the clock on
* which the timer is based.
* which the timer is based. Is setup by adding
* slack to the _softexpires value. For non range timers
* identical to _softexpires.
* @_softexpires: the absolute earliest expiry time of the hrtimer.
* The time which was given as expiry time when the timer
* was armed.
* @function: timer expiry callback function
* @base: pointer to the timer base (per cpu and per clock)
* @state: state information (See bit values above)
@ -121,7 +128,8 @@ enum hrtimer_cb_mode {
*/
struct hrtimer {
struct rb_node node;
ktime_t expires;
ktime_t _expires;
ktime_t _softexpires;
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
unsigned long state;
@ -201,6 +209,71 @@ struct hrtimer_cpu_base {
#endif
};
static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time)
{
timer->_expires = time;
timer->_softexpires = time;
}
static inline void hrtimer_set_expires_range(struct hrtimer *timer, ktime_t time, ktime_t delta)
{
timer->_softexpires = time;
timer->_expires = ktime_add_safe(time, delta);
}
static inline void hrtimer_set_expires_range_ns(struct hrtimer *timer, ktime_t time, unsigned long delta)
{
timer->_softexpires = time;
timer->_expires = ktime_add_safe(time, ns_to_ktime(delta));
}
static inline void hrtimer_set_expires_tv64(struct hrtimer *timer, s64 tv64)
{
timer->_expires.tv64 = tv64;
timer->_softexpires.tv64 = tv64;
}
static inline void hrtimer_add_expires(struct hrtimer *timer, ktime_t time)
{
timer->_expires = ktime_add_safe(timer->_expires, time);
timer->_softexpires = ktime_add_safe(timer->_softexpires, time);
}
static inline void hrtimer_add_expires_ns(struct hrtimer *timer, unsigned long ns)
{
timer->_expires = ktime_add_ns(timer->_expires, ns);
timer->_softexpires = ktime_add_ns(timer->_softexpires, ns);
}
static inline ktime_t hrtimer_get_expires(const struct hrtimer *timer)
{
return timer->_expires;
}
static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer)
{
return timer->_softexpires;
}
static inline s64 hrtimer_get_expires_tv64(const struct hrtimer *timer)
{
return timer->_expires.tv64;
}
static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer)
{
return timer->_softexpires.tv64;
}
static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer)
{
return ktime_to_ns(timer->_expires);
}
static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer)
{
return ktime_sub(timer->_expires, timer->base->get_time());
}
#ifdef CONFIG_HIGH_RES_TIMERS
struct clock_event_device;
@ -221,6 +294,8 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer)
return timer->base->cpu_base->hres_active;
}
extern void hrtimer_peek_ahead_timers(void);
/*
* The resolution of the clocks. The resolution value is returned in
* the clock_getres() system call to give application programmers an
@ -243,6 +318,7 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer)
* is expired in the next softirq when the clock was advanced.
*/
static inline void clock_was_set(void) { }
static inline void hrtimer_peek_ahead_timers(void) { }
static inline void hres_timers_resume(void) { }
@ -264,6 +340,10 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer)
extern ktime_t ktime_get(void);
extern ktime_t ktime_get_real(void);
DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
/* Exported timer functions: */
/* Initialize timers: */
@ -288,12 +368,25 @@ static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { }
/* Basic timer operations: */
extern int hrtimer_start(struct hrtimer *timer, ktime_t tim,
const enum hrtimer_mode mode);
extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
unsigned long range_ns, const enum hrtimer_mode mode);
extern int hrtimer_cancel(struct hrtimer *timer);
extern int hrtimer_try_to_cancel(struct hrtimer *timer);
static inline int hrtimer_start_expires(struct hrtimer *timer,
enum hrtimer_mode mode)
{
unsigned long delta;
ktime_t soft, hard;
soft = hrtimer_get_softexpires(timer);
hard = hrtimer_get_expires(timer);
delta = ktime_to_ns(ktime_sub(hard, soft));
return hrtimer_start_range_ns(timer, soft, delta, mode);
}
static inline int hrtimer_restart(struct hrtimer *timer)
{
return hrtimer_start(timer, timer->expires, HRTIMER_MODE_ABS);
return hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
}
/* Query timers: */
@ -350,6 +443,10 @@ extern long hrtimer_nanosleep_restart(struct restart_block *restart_block);
extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl,
struct task_struct *tsk);
extern int schedule_hrtimeout_range(ktime_t *expires, unsigned long delta,
const enum hrtimer_mode mode);
extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode);
/* Soft interrupt function to run the hrtimer queues: */
extern void hrtimer_run_queues(void);
extern void hrtimer_run_pending(void);