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SubjectRe: [RFC][PATCH] timers fixes/improvements
Oh, It never ends. Andrew, please apply this too.
Or I can send you updated previous patch if your prefer.

[PATCH] timers fixes/improvements fix

1. Fix compilation with CONFIG_NO_IDLE_HZ:
s/->lock/->t_base.lock/

2. s/_base/base as Ingo suggested.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>

--- 2.6.12-rc1/include/linux/timer.h~FIX 2005-04-01 00:33:33.000000000 +0400
+++ 2.6.12-rc1/include/linux/timer.h 2005-04-02 16:08:45.000000000 +0400
@@ -17,7 +17,7 @@ struct timer_list {
void (*function)(unsigned long);
unsigned long data;

- struct timer_base_s *_base;
+ struct timer_base_s *base;
};

#define TIMER_MAGIC 0x4b87ad6e
@@ -28,7 +28,7 @@ extern struct timer_base_s __init_timer_
.function = (_function), \
.expires = (_expires), \
.data = (_data), \
- ._base = &__init_timer_base, \
+ .base = &__init_timer_base, \
.magic = TIMER_MAGIC, \
}

--- 2.6.12-rc1/kernel/timer.c~FIX 2005-04-02 15:49:13.000000000 +0400
+++ 2.6.12-rc1/kernel/timer.c 2005-04-02 16:09:11.000000000 +0400
@@ -172,7 +172,7 @@ EXPORT_SYMBOL(__init_timer_base);
void fastcall init_timer(struct timer_list *timer)
{
timer->entry.next = NULL;
- timer->_base = &per_cpu(tvec_bases,
+ timer->base = &per_cpu(tvec_bases,
__smp_processor_id()).t_base;
timer->magic = TIMER_MAGIC;
}
@@ -195,11 +195,11 @@ static timer_base_t *lock_timer_base(str
timer_base_t *base;

for (;;) {
- base = timer->_base;
+ base = timer->base;
/* Can be NULL while __mod_timer switches bases */
if (likely(base != NULL)) {
spin_lock_irqsave(&base->lock, *flags);
- if (likely(base == timer->_base))
+ if (likely(base == timer->base))
return base;
spin_unlock_irqrestore(&base->lock, *flags);
}
@@ -233,13 +233,13 @@ int __mod_timer(struct timer_list *timer
}

if (base != &new_base->t_base) {
- timer->_base = NULL;
+ timer->base = NULL;
/* Safe: the timer can't be seen via ->entry,
- * and lock_timer_base checks ->_base != 0. */
+ * and lock_timer_base checks ->base != 0. */
spin_unlock(&base->lock);
base = &new_base->t_base;
spin_lock(&base->lock);
- timer->_base = base;
+ timer->base = base;
}

timer->expires = expires;
@@ -270,7 +270,7 @@ void add_timer_on(struct timer_list *tim
check_timer(timer);

spin_lock_irqsave(&base->t_base.lock, flags);
- timer->_base = &base->t_base;
+ timer->base = &base->t_base;
internal_add_timer(base, timer);
spin_unlock_irqrestore(&base->t_base.lock, flags);
}
@@ -409,7 +409,7 @@ static int cascade(tvec_base_t *base, tv
struct timer_list *tmp;

tmp = list_entry(curr, struct timer_list, entry);
- BUG_ON(tmp->_base != &base->t_base);
+ BUG_ON(tmp->base != &base->t_base);
curr = curr->next;
internal_add_timer(base, tmp);
}
@@ -491,7 +491,7 @@ unsigned long next_timer_interrupt(void)
int i, j;

base = &__get_cpu_var(tvec_bases);
- spin_lock(&base->lock);
+ spin_lock(&base->t_base.lock);
expires = base->timer_jiffies + (LONG_MAX >> 1);
list = 0;

@@ -539,7 +539,7 @@ found:
expires = nte->expires;
}
}
- spin_unlock(&base->lock);
+ spin_unlock(&base->t_base.lock);
return expires;
}
#endif
@@ -1301,7 +1301,7 @@ static void migrate_timer_list(tvec_base
while (!list_empty(head)) {
timer = list_entry(head->next, struct timer_list, entry);
detach_timer(timer, 0);
- timer->_base = &new_base->t_base;
+ timer->base = &new_base->t_base;
internal_add_timer(new_base, timer);
}
}
-
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