Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\events\core.c Create Date:2022-07-28 13:35:35
Last Modify:2022-05-20 07:50:19 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:arch_perf_update_userpage

Proto:void __weak arch_perf_update_userpage(struct perf_event *event, struct perf_event_mmap_page *userpg, u64 now)

Type:void

Parameter:

TypeParameterName
struct perf_event *event
struct perf_event_mmap_page *userpg
u64now

NULL

Caller
NameDescribe
perf_event_update_userpageCallers need to ensure there can be no nesting of this function, otherwise* the seqlock logic goes bad. We can not serialize this because the arch* code calls this from NMI context.