xref: /linux/scripts/atomic/fallbacks/fetch_add_unless (revision de84da588f35423c5c2e6a46f2bc8a07f8eaf793)
1cat << EOF
2	${int} c = raw_${atomic}_read(v);
3
4	do {
5		if (unlikely(c == u))
6			break;
7	} while (!raw_${atomic}_try_cmpxchg(v, &c, c + a));
8
9	return c;
10EOF
11