lock_timer

Name:We are using hashed locking: Holding per_cpu(timer_bases[x]).lock means* that all timers which are tied to this base are locked, and the base itself* is locked too.* So __run_timers/migrate_timers can safely modify all timers which could

Proto:static struct timer_base *lock_timer_base(struct timer_list *timer, unsigned long *flags)__acquires(timer->base->lock)

Type:struct timer_base

Parameter:

Type	Parameter	Name
struct timer_list *	timer
unsigned long *	flags

**Caller**
Name	Describe
__mod_timer
add_timer_on	add_timer_on - start a timer on a particular CPU@timer: the timer to be added@cpu: the CPU to start it on* This is not very scalable on SMP. Double adds are not possible.
del_timer	del_timer - deactivate a timer.@timer: the timer to be deactivated del_timer() deactivates a timer - this works on both active and inactive* timers.* The function returns whether it has deactivated a pending timer or not.* (ie
try_to_del_timer_sync	ry_to_del_timer_sync - Try to deactivate a timer@timer: timer to delete This function tries to deactivate a timer. Upon successful (ret >= 0)* exit the timer is not queued and the handler is not running on any CPU.

Function report