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 13:00:55
Last Modify:2020-03-17 19:30:04 Copyright©Brick
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函数名称:g_buffer_read_start - start a non consuming read of the buffer*@iter: The iterator returned by ring_buffer_read_prepare* This finalizes the startup of an iteration through the buffer

函数原型:void ring_buffer_read_start(struct ring_buffer_iter *iter)

返回类型:void

参数:

类型参数名称
struct ring_buffer_iter *iter
4258  如果非iter则返回
4261  cpu_buffer等于cpu_buffer
4263  raw_spin_lock_irqsave( & serialize readers , flags)
4264  r sched/core.c and kernel_lock.c: ( & lock)
4265  rb_iter_reset(iter)
4266  arch_spin_unlock( & lock)
4267  raw_spin_unlock_irqrestore( & serialize readers , flags)
调用者
名称描述
__tracing_open
ftrace_dump_buf