cat << EOF
static __always_inline ${int}
arch_${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u)
{
${int} c = arch_${atomic}_read(v);
do {
if (unlikely(c == u))
break;
} while (!arch_${atomic}_try_cmpxchg(v, &c, c + a));
return c;
}
EOF