more_data += sizeof(u64);
        }
 
-       dprintf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d: %p period: %Ld\n",
+       dprintf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
                (void *)(offset + head),
                (void *)(long)(event->header.size),
                event->header.misc,
-               event->ip.pid,
+               event->ip.pid, event->ip.tid,
                (void *)(long)ip,
                (long long)period);
 
        struct thread *thread = threads__findnew(event->mmap.pid);
        struct map *map = map__new(&event->mmap);
 
-       dprintf("%p [%p]: PERF_EVENT_MMAP %d: [%p(%p) @ %p]: %s\n",
+       dprintf("%p [%p]: PERF_EVENT_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
                (void *)(offset + head),
                (void *)(long)(event->header.size),
                event->mmap.pid,
+               event->mmap.tid,
                (void *)(long)event->mmap.start,
                (void *)(long)event->mmap.len,
                (void *)(long)event->mmap.pgoff,