mod_timer

函数名称：mod_timer - modify a timer's timeout*@timer: the timer to be modified*@expires: new timeout in jiffies* 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,

函数原型：int mod_timer(struct timer_list *timer, unsigned long expires)

返回类型：int

参数：

类型	参数	名称
struct timer_list *	timer
unsigned long	expires

**调用者**
名称	描述
uv_heartbeat	percpu heartbeat timer
idle_worker_timeout
pool_mayday_timeout
maybe_create_worker	maybe_create_worker - create a new worker if necessary@pool: pool to create a new worker for Create a new worker for @pool if necessary
poll_spurious_irqs
note_interrupt
rcu_torture_reader	RCU torture reader kthread. Repeatedly dereferences rcu_torture_current,* incrementing the corresponding element of the pipeline array. The* counter in the element should never be greater than 1, otherwise, the* RCU implementation is broken.
add_timer	add_timer - start a timer@timer: the timer to be added The kernel will do a ->function(@timer) callback from the* timer interrupt at the ->expires point in the future
writeout_period	On idle system, we can be called long after we scheduled because we use* deferred timers so count with missed periods.
laptop_io_completion	We've spun up the disk and we're in laptop mode: schedule writeback* of all dirty data a few seconds from now. If the flush is already scheduled* then push it back - the user is still using the disk.
blk_mq_timeout_work
throtl_schedule_pending_timer	Call with queue lock held
blkcg_iolatency_throttle
__start_timer
worker_enter_idle	worker_enter_idle - enter idle state@worker: worker which is entering idle state@worker is entering idle state. Update stats and idle timer if* necessary.* LOCKING:* spin_lock_irq(pool->lock).
wb_domain_writeout_inc
blk_stat_activate_nsecs	lk_stat_activate_nsecs() - Gather block statistics during a time window in* nanoseconds.@cb: The callback.@nsecs: Number of nanoseconds to gather statistics for.* The timer callback will be called when the window expires.
blk_stat_activate_msecs	lk_stat_activate_msecs() - Gather block statistics during a time window in* milliseconds.@cb: The callback.@msecs: Number of milliseconds to gather statistics for.* The timer callback will be called when the window expires.
blk_add_timer	lk_add_timer - Start timeout timer for a single request@req: request that is about to start running. Notes:* Each request has its own timer, and as it is added to the queue, we* set up the timer. When the request completes, we cancel the timer.
key_schedule_gc	Schedule a garbage collection run.* - time precision isn't particularly important

函数逻辑报告