kvm_getswapinfo
int kvm_getswapinfo (kvm_t *, struct kvm_swap *, int, int);
kvnsw = kvm_getswapinfo(kd, kvmsw, 16, 0);
if (kvm_getswapinfo(kd, &dummy, 1, 0) < 0) {
kvnsw = kvm_getswapinfo(kd, ls->kvmsw, NKVMSW, 0);
n = kvm_getswapinfo(kd, swapary, 1, 0);
n = kvm_getswapinfo(