1ace9bad4SMark Rutlandcat <<EOF
2*9257959aSMark Rutland	${int} dec, c = raw_${atomic}_read(v);
3ace9bad4SMark Rutland
4ace9bad4SMark Rutland	do {
5ace9bad4SMark Rutland		dec = c - 1;
6ace9bad4SMark Rutland		if (unlikely(dec < 0))
7ace9bad4SMark Rutland			break;
8*9257959aSMark Rutland	} while (!raw_${atomic}_try_cmpxchg(v, &c, dec));
9ace9bad4SMark Rutland
10ace9bad4SMark Rutland	return dec;
11ace9bad4SMark RutlandEOF
12