NAME¶
mod_timer - modify a timer's timeout
SYNOPSIS¶
int
mod_timer(struct timer_list * timer,
unsigned long expires);
ARGUMENTS¶
timer
the timer to be modified
expires
new timeout in jiffies
DESCRIPTION¶
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.)
COPYRIGHT¶