TRACK_ALLOC
p = get_track(s, object, TRACK_ALLOC);
print_track("Allocated", get_track(s, object, TRACK_ALLOC), pr_time);
set_track(s, object, TRACK_ALLOC, ac->caller_addr, gfpflags);
trackp = get_track(s, objp, TRACK_ALLOC);
bool is_alloc = (alloc == TRACK_ALLOC);
TRACK_ALLOC, &slab_debugfs_fops);