Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\ring_buffer.c Create Date:2022-07-28 11:54:48
Last Modify:2020-03-17 19:30:04 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:The total entries in the ring buffer is the running counter* of entries entered into the ring buffer, minus the sum of* the entries read from the ring buffer and the number of* entries that were overwritten.

Proto:static inline unsigned long rb_num_of_entries(struct ring_buffer_per_cpu *cpu_buffer)

Type:unsigned long

Parameter:

TypeParameterName
struct ring_buffer_per_cpu *cpu_buffer
3339  Return local_read( & entries) - local_read( & overrun) + read
Caller
NameDescribe
ring_buffer_entries_cpug_buffer_entries_cpu - get the number of entries in a cpu buffer*@buffer: The ring buffer*@cpu: The per CPU buffer to get the entries from.
ring_buffer_entriesg_buffer_entries - get the number of entries in a buffer*@buffer: The ring buffer* Returns the total number of entries in the ring buffer* (all CPU entries)
rb_get_reader_page