函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\fcntl.c Create Date:2022-07-29 10:36:00
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：_read_lock() is held

函数原型：static void kill_fasync_rcu(struct fasync_struct *fa, int sig, int band)

返回类型：void

参数：

类型参数名称
struct fasync_struct *fa
intsig
intband
992  当fa循环
995  如果magic不等于FASYNC_MAGIC则
996  printk - print a kernel message*@fmt: format string* This is printk(). It can be called from any context. We want it to work.* We try to grab the console_lock. If we succeed, it's easy - we log the* output and call the console drivers
998  返回
1000  read_lock( & fa_lock)
1001  如果fa_file则
1002  fown等于f_owner
1006  如果非sig恒等于SIGURG且 posix.1b rt signal to be delivered on IO 恒等于0的值则send_sigio(fown, fa_fd, band)
1009  read_unlock( & fa_lock)
1010  fa等于cu_dereference() - fetch RCU-protected pointer for dereferencing*@p: The pointer to read, prior to dereferencing* This is a simple wrapper around rcu_dereference_check().( singly linked list )
调用者
名称描述
kill_fasync