函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\atomic-fallback.h Create Date:2022-07-27 06:38:50
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：atomic64_fetch_add_unless - add unless the number is already a given value*@v: pointer of type atomic64_t*@a: the amount to add to v

函数原型：static inline s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)

返回类型：s64

参数：

类型参数名称
atomic64_t *v
s64a
s64u
2196  c等于atomic64_read(v)
2198  循环
2199  如果此条件成立可能性小(为编译器优化)(c == u)则退出
2201  当非atomic64_try_cmpxchg(v, & c, c + a)循环
2203  返回:c
调用者
名称描述
__bpf_map_inc_not_zeromap_idr_lock should have been held
atomic64_add_unlessatomic64_add_unless - add unless the number is already a given value*@v: pointer of type atomic64_t*@a: the amount to add to v...*@u: ...unless v is equal to u.* Atomically adds @a to @v, if @v was not already @u.* Returns true if the addition was done.