Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\rwsem.c Create Date:2022-07-28 09:48:01
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Test the flags in the owner field.

Proto:static inline bool rwsem_test_oflags(struct rw_semaphore *sem, long flags)

Type:bool

Parameter:

TypeParameterName
struct rw_semaphore *sem
longflags
190  Return atomic_long_read( & Write owner or one of the read owners as well flags regarding* the current state of the rwsem. Can be used as a speculative* check to see if the write owner is running on the cpu.) & flags
Caller
NameDescribe
is_rwsem_reader_ownedReturn true if the rwsem is owned by a reader.
__up_writelock after writing