函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\ring_buffer.c Create Date:2022-07-27 12:58:41
Last Modify:2020-03-17 19:30:04 Copyright©Brick
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函数名称：rb_head_page_set_normal

函数原型：static int rb_head_page_set_normal(struct ring_buffer_per_cpu *cpu_buffer, struct buffer_page *head, struct buffer_page *prev, int old_flag)

返回类型：int

参数：

类型参数名称
struct ring_buffer_per_cpu *cpu_buffer
struct buffer_page *head
struct buffer_page *prev
intold_flag
994  返回:rb_head_page_set(cpu_buffer, head, prev, old_flag, Making the ring buffer lockless makes things tricky)
调用者
名称描述
rb_handle_head_page_handle_head_page - writer hit the head page* Returns: +1 to retry page* 0 to continue* -1 on error