Update biosnoop.py (iovisor#4124)

“blk_start_request” and “blk_mq_start_request” should be chosen between the two.
ego · Jul 29, 2022 · 4902819 · 4902819
1 parent 4a8b593
commit 4902819
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/tools/biosnoop.py b/tools/biosnoop.py
@@ -209,7 +209,8 @@
  b.attach_kprobe(event="blk_account_io_start", fn_name="trace_pid_start")
 if BPF.get_kprobe_functions(b'blk_start_request'):
  b.attach_kprobe(event="blk_start_request", fn_name="trace_req_start")
-b.attach_kprobe(event="blk_mq_start_request", fn_name="trace_req_start")
+else:
+ b.attach_kprobe(event="blk_mq_start_request", fn_name="trace_req_start")
 if BPF.get_kprobe_functions(b'__blk_account_io_done'):
  b.attach_kprobe(event="__blk_account_io_done", fn_name="trace_req_completion")
 else: