scripts/atomic/fallbacks/fetch_add_unless

cat << EOF
static __always_inline ${int}
raw_${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u)
{
	${int} c = raw_${atomic}_read(v);

	do {
		if (unlikely(c == u))
			break;
	} while (!raw_${atomic}_try_cmpxchg(v, &c, c + a));

	return c;
}
EOF