函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\time\hrtimer.c Create Date:2022-07-27 11:40:36
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：queue_hrtimer - internal function to (re)start a timer* The timer is inserted in expiry order. Insertion into the* red black tree is O(log(n)). Must hold the base lock.* Returns 1 when the new timer is the leftmost timer in the tree.

函数原型：static int enqueue_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base, enum hrtimer_mode mode)

返回类型：int

参数：

类型参数名称
struct hrtimer *timer
struct hrtimer_clock_base *base
enum hrtimer_modemode
965  debug_activate(timer, mode)
967  active_bases或等于1左移index位
970  WRITE_ONCE(state, HRTIMER_STATE_ENQUEUED)
972  返回:添加定时器到时钟队列
调用者
名称描述
__hrtimer_start_range_ns
__run_hrtimerThe write_seqcount_barrier()s in __run_hrtimer() split the thing into 3* distinct sections:* - queued: the timer is queued* - callback: the timer is being ran* - post: the timer is inactive or (re)queued* On the read side we ensure we observe timer->state