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 13:06:02
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：trace_empty

函数原型：int trace_empty(struct trace_iterator *iter)

返回类型：int

参数：

类型参数名称
struct trace_iterator *iter
3927  如果cpu_file不等于RING_BUFFER_ALL_CPUS则
3928  cpu等于cpu_file
3929  buf_iter等于trace_buffer_iter(iter, cpu)
3930  如果buf_iter则
3931  如果非g_buffer_iter_empty - check if an iterator has no more to read*@iter: The iterator to check则返回:0
3933  否则
3934  如果非g_buffer_empty_cpu - is a cpu buffer of a ring buffer empty?*@buffer: The ring buffer*@cpu: The CPU buffer to test则返回:0
3937  返回:1
3940  for_each_tracing_cpu(cpu)
3941  buf_iter等于trace_buffer_iter(iter, cpu)
3942  如果buf_iter则
3943  如果非g_buffer_iter_empty - check if an iterator has no more to read*@iter: The iterator to check则返回:0
3945  否则
3946  如果非g_buffer_empty_cpu - is a cpu buffer of a ring buffer empty?*@buffer: The ring buffer*@cpu: The CPU buffer to test则返回:0
3951  返回:1
调用者
名称描述
trace_latency_header
trace_default_header
s_show
tracing_wait_pipeMust be called with iter->mutex held.
tracing_read_pipeConsumer reader.
tracing_buffers_read
ftrace_dump
print_graph_headers_flags