snapshot_walk
int snapshot_walk(enum snapshot_types type, struct snapshot *old,
(void) snapshot_walk(SNAP_CPUS, old, new, cpu_report, &pset);
(void) snapshot_walk(SNAP_PSETS, old, new,
ret = snapshot_walk(SNAP_CPUS, old, new, dummy_cb, NULL);
ret = snapshot_walk(SNAP_PSETS, old, new, dummy_cb, NULL);
ret = snapshot_walk(SNAP_IODEVS, old, new, dummy_cb, NULL);
(void) snapshot_walk(SNAP_IODEVS, oldss, newss, show_disk_errors, NULL);
(void) snapshot_walk(SNAP_IODEVS, oldss, newss, show_disk, &count);
(void) snapshot_walk(SNAP_IODEVS, oldss, newss, show_disk, &count);
(void) snapshot_walk(SNAP_IODEVS, oldss, newss, show_disk, &count);
(void) snapshot_walk(SNAP_IODEVS, NULL, newss,
(void) snapshot_walk(SNAP_IODEVS, NULL, newss,
(void) snapshot_walk(type, old, new, cb, NULL);
(void) snapshot_walk(SNAP_IODEVS, old, new, show_disk, NULL);
(void) snapshot_walk(SNAP_IODEVS, NULL, ss, print_disk, NULL);