函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\include\asm\bitops.h Create Date:2022-07-27 06:38:08
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：arch___test_and_set_bit

函数原型：static __always_inline bool arch___test_and_set_bit(long nr, volatile unsigned long *addr)

返回类型：bool

参数：

类型参数名称
longnr
volatile unsigned long *addr
152  asm(__ASM_SIZE " %2,%1" CC_SET:CC_OUT(oldbit):ADDR, "Ir"(nr):"memory")
156  返回:oldbit
调用者
名称描述
__test_and_set_bit__test_and_set_bit - Set a bit and return its old value*@nr: Bit to set*@addr: Address to count from* This operation is non-atomic. If two instances of this operation race, one* can appear to succeed but actually fail.