函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace.c Create Date:2022-07-27 13:07:22
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:tracing_saved_cmdlines_size_read

函数原型:static ssize_t tracing_saved_cmdlines_size_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos)

返回类型:ssize_t

参数:

类型参数名称
struct file *filp
char __user *ubuf
size_tcnt
loff_t *ppos
5277  r sched/core.c and kernel_lock.c: ( & trace_cmdline_lock)
5278  r等于格式化输出字符串
5279  arch_spin_unlock( & trace_cmdline_lock)
5281  返回:simple_read_from_buffer(ubuf, cnt, ppos, buf, r)