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| MOD_TIMER(9) | Driver Basics | MOD_TIMER(9) |
NAME¶
mod_timer - modify a timer's timeoutSYNOPSIS¶
int
mod_timer(struct timer_list * timer,
unsigned long expires);
ARGUMENTS¶
timerthe 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¶
| January 2017 | Kernel Hackers Manual 4.8. |