Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\preemptirq_delay_test.c Create Date:2022-07-28 12:08:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:preemptoff_test

Proto:static __always_inline void preemptoff_test(void)

Type:void

Parameter:Nothing

54  Even if we don't have any preemption, we need preempt disable/enable* to be barriers, so that we don't have things like get_user/put_user* that can cause faults and scheduling migrate into our preempt-protected* region.()
55  busy_wait(delay)
56  preempt_enable()
Caller
NameDescribe
execute_preemptirqtest