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 11:40:55
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：hrtimer_sleeper_start_expires - Start a hrtimer sleeper timer*@sl: sleeper to be started*@mode: timer mode abs/rel* Wrapper around hrtimer_start_expires() for hrtimer_sleeper based timers* to allow PREEMPT_RT to tweak the delivery mode (soft/hardirq

函数原型：void hrtimer_sleeper_start_expires(struct hrtimer_sleeper *sl, enum hrtimer_mode mode)

返回类型：void

参数：

类型参数名称
struct hrtimer_sleeper *sl
enum hrtimer_modemode
1792  如果IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_PREEMPT_RT)且is_hard则mode或等于 Timer callback function will be executed in
1795  hrtimer_start_expires( & timer, mode)
调用者
名称描述
do_nanosleep
schedule_hrtimeout_range_clockschedule_hrtimeout_range_clock - sleep until timeout*@expires: timeout value (ktime_t)*@delta: slack in expires timeout (ktime_t)*@mode: timer mode*@clock_id: timer clock to be used
futex_wait_queue_meex_wait_queue_me() - queue_me() and wait for wakeup, timeout, or signal*@hb: the futex hash bucket, must be locked by the caller*@q: the futex_q to queue up on*@timeout: the prepared hrtimer_sleeper, or null for no timeout
futex_lock_piUserspace tried a 0 -> TID atomic transition of the futex value* and failed. The kernel side here does the whole locking operation:* if there are waiters then it will block as a consequence of relying* on rt-mutexes, it does PI, etc
blk_mq_poll_hybrid_sleep