函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\time\timekeeping.c Create Date:2022-07-27 11:41:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ktime_get_resolution_ns

函数原型：unsigned int ktime_get_resolution_ns(void)

返回类型：unsigned int

参数：无

769  tk等于timekeeper
773  WARN_ON(lag for if timekeeping is suspended )
775  循环
776  seq等于ad_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* read_seqcount_begin opens a read critical section of the given seqcount
777  nsecs等于mult右移shift位
778  当ad_seqcount_retry - end a seq-read critical section*@s: pointer to seqcount_t*@start: count, from read_seqcount_begin* Returns: 1 if retry is required, else 0* read_seqcount_retry closes a read critical section of the given seqcount循环
780  返回:nsecs