accomodate mq block device I/O
diff --git a/examples/disksnoop.py b/examples/disksnoop.py
index 352a170..206b618 100755
--- a/examples/disksnoop.py
+++ b/examples/disksnoop.py
@@ -17,6 +17,9 @@
# load BPF program
b = BPF(src_file="disksnoop.c")
+b.attach_kprobe(event="blk_start_request", fn_name="trace_start")
+b.attach_kprobe(event="blk_mq_start_request", fn_name="trace_start")
+b.attach_kprobe(event="blk_account_io_completion", fn_name="trace_completion")
# header
print("%-18s %-2s %-7s %8s" % ("TIME(s)", "T", "BYTES", "LAT(ms)"))