文件操作 - add_unless
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文件: /usr/src/linux-headers-5.15.0-186/scripts/atomic/fallbacks/add_unless
编辑文件内容
cat << EOF /** * arch_${atomic}_add_unless - add unless the number is already a given value * @v: pointer of type ${atomic}_t * @a: the amount to add to v... * @u: ...unless v is equal to u. * * Atomically adds @a to @v, if @v was not already @u. * Returns true if the addition was done. */ static __always_inline bool arch_${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u) { return arch_${atomic}_fetch_add_unless(v, a, u) != u; } EOF
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