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[PATCH] hrtimers: remove state field

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Remove the state field and encode this information in the rb_node similiar to
normal timer.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roman Zippel 2006-03-26 01:38:09 -08:00 committed by Linus Torvalds
parent 432569bb9d
commit b75f7a51ca
2 changed files with 7 additions and 18 deletions
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11
include/linux/hrtimer.h
View file

@ -34,13 +34,7 @@ enum hrtimer_restart {
HRTIMER_RESTART,
};
/*
* Timer states:
*/
enum hrtimer_state {
HRTIMER_INACTIVE, /* Timer is inactive */
HRTIMER_PENDING, /* Timer is pending */
};
#define HRTIMER_INACTIVE ((void *)1UL)
struct hrtimer_base;
@ -61,7 +55,6 @@ struct hrtimer_base;
struct hrtimer {
struct rb_node node;
ktime_t expires;
enum hrtimer_state state;
int (*function)(void *);
void *data;
struct hrtimer_base *base;
@ -124,7 +117,7 @@ extern ktime_t hrtimer_get_next_event(void);
static inline int hrtimer_active(const struct hrtimer *timer)
{
return timer->state == HRTIMER_PENDING;
return timer->node.rb_parent != HRTIMER_INACTIVE;
}
/* Forward a hrtimer so it expires after now: */

14
kernel/hrtimer.c
View file

@ -374,8 +374,6 @@ static void enqueue_hrtimer(struct hrtimer *timer, struct hrtimer_base *base)
rb_link_node(&timer->node, parent, link);
rb_insert_color(&timer->node, &base->active);
timer->state = HRTIMER_PENDING;
if (!base->first || timer->expires.tv64 <
rb_entry(base->first, struct hrtimer, node)->expires.tv64)
base->first = &timer->node;
@ -395,6 +393,7 @@ static void __remove_hrtimer(struct hrtimer *timer, struct hrtimer_base *base)
if (base->first == &timer->node)
base->first = rb_next(&timer->node);
rb_erase(&timer->node, &base->active);
timer->node.rb_parent = HRTIMER_INACTIVE;
}
/*
@ -405,7 +404,6 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_base *base)
{
if (hrtimer_active(timer)) {
__remove_hrtimer(timer, base);
timer->state = HRTIMER_INACTIVE;
return 1;
}
return 0;
@ -579,6 +577,7 @@ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id,
clock_id = CLOCK_MONOTONIC;
timer->base = &bases[clock_id];
timer->node.rb_parent = HRTIMER_INACTIVE;
}
/**
@ -625,7 +624,6 @@ static inline void run_hrtimer_queue(struct hrtimer_base *base)
fn = timer->function;
data = timer->data;
set_curr_timer(base, timer);
timer->state = HRTIMER_INACTIVE;
__remove_hrtimer(timer, base);
spin_unlock_irq(&base->lock);
@ -633,12 +631,10 @@ static inline void run_hrtimer_queue(struct hrtimer_base *base)
spin_lock_irq(&base->lock);
/* Another CPU has added back the timer */
if (timer->state != HRTIMER_INACTIVE)
continue;
if (restart != HRTIMER_NORESTART)
if (restart != HRTIMER_NORESTART) {
BUG_ON(hrtimer_active(timer));
enqueue_hrtimer(timer, base);
}
}
set_curr_timer(base, NULL);
spin_unlock_irq(&base->lock);