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 12:59:23
Last Modify:2020-03-17 19:30:04 Copyright©Brick
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函数名称：ring_buffer_change_overwrite

函数原型：void ring_buffer_change_overwrite(struct ring_buffer *buffer, int val)

返回类型：void

参数：

类型参数名称
struct ring_buffer *buffer
intval
1896  mutex_lock( & mutex)
1897  如果val则flags或等于RB_FL_OVERWRITE
1899  否则flags与等于RB_FL_OVERWRITE的反
1901  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
调用者
名称描述
set_tracer_flag