Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\ring_buffer.c Create Date:2022-07-28 11:54:50
Last Modify:2020-03-17 19:30:04 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:g_buffer_bytes_cpu - get the number of bytes consumed in a cpu buffer*@buffer: The ring buffer*@cpu: The per CPU buffer to read from.

Proto:unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu)

Type:unsigned long

Parameter:

TypeParameterName
struct ring_buffer *buffer
intcpu
3386  If Not pumask_test_cpu - test for a cpu in a cpumask*@cpu: cpu number (< nr_cpu_ids)*@cpumask: the cpumask pointer* Returns 1 if @cpu is set in @cpumask, else returns 0 Then Return 0
3389  cpu_buffer = buffers[cpu]
3390  ret = local_read( & entries_bytes) - read_bytes
3392  Return ret
Caller
NameDescribe
tracing_stats_read