mod_timer — modify a timer's timeout
int mod_timer ( | struct timer_list * timer, |
unsigned long expires); |
mod_timer is a more efficient way to update the expire field of an
active timer (if the timer is inactive it will be activated)
mod_timer(timer, expires) is equivalent to:
del_timer(timer); timer->expires = expires; add_timer(timer);
Note that if there are multiple unserialized concurrent users of the
same timer, then mod_timer is the only safe way to modify the timeout,
since add_timer cannot modify an already running timer.
The function returns whether it has modified a pending timer or not.
(ie. mod_timer of an inactive timer returns 0, mod_timer of an
active timer returns 1.)