atomic64_sub_if_positive  437 arch/mips/include/asm/atomic.h #define atomic64_dec_if_positive(v)	atomic64_sub_if_positive(1, v)
atomic64_sub_if_positive  355 arch/riscv/include/asm/atomic.h #define atomic64_dec_if_positive(v)	atomic64_sub_if_positive(v, 1)