Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace.c Create Date:2022-07-28 12:00:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:trace_empty

Proto:int trace_empty(struct trace_iterator *iter)

Type:int

Parameter:

TypeParameterName
struct trace_iterator *iter
3927  If cpu_file != RING_BUFFER_ALL_CPUS Then
3928  cpu = cpu_file
3929  buf_iter = trace_buffer_iter(iter, cpu)
3930  If buf_iter Then
3931  If Not g_buffer_iter_empty - check if an iterator has no more to read*@iter: The iterator to check Then Return 0
3933  Else
3934  If Not g_buffer_empty_cpu - is a cpu buffer of a ring buffer empty?*@buffer: The ring buffer*@cpu: The CPU buffer to test Then Return 0
3937  Return 1
3940  for_each_tracing_cpu(cpu)
3941  buf_iter = trace_buffer_iter(iter, cpu)
3942  If buf_iter Then
3943  If Not g_buffer_iter_empty - check if an iterator has no more to read*@iter: The iterator to check Then Return 0
3945  Else
3946  If Not g_buffer_empty_cpu - is a cpu buffer of a ring buffer empty?*@buffer: The ring buffer*@cpu: The CPU buffer to test Then Return 0
3951  Return 1
Caller
NameDescribe
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