Commit a1ca2389 authored by Masami Hiramatsu (Google)'s avatar Masami Hiramatsu (Google) Committed by Shuah Khan
Browse files

selftests: tracing: Add tprobe enable/disable testcase 

Commit 2867495d ("tracing: tprobe-events: Register tracepoint when
enable tprobe event") caused regression bug and tprobe did not work.
To prevent similar problems, add a testcase which enables/disables a
tprobe and check the results.

Link: https://lore.kernel.org/r/176252610176.214996.3978515319000806265.stgit@devnote2


Signed-off-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent d9e6269e

tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc

0 → 100644
+40 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# description: Generic dynamic event - enable/disable tracepoint probe events

# requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README



echo 0 > events/enable

echo > dynamic_events



TRACEPOINT=sched_switch

ENABLEFILE=events/tracepoints/myprobe/enable



:;: "Add tracepoint event on $TRACEPOINT" ;:



echo "t:myprobe ${TRACEPOINT}" >> dynamic_events



:;: "Check enable/disable to ensure it works" ;:



echo 1 > $ENABLEFILE



grep -q $TRACEPOINT trace



echo 0 > $ENABLEFILE



echo > trace



! grep -q $TRACEPOINT trace



:;: "Repeat enable/disable to ensure it works" ;:



echo 1 > $ENABLEFILE



grep -q $TRACEPOINT trace



echo 0 > $ENABLEFILE



echo > trace



! grep -q $TRACEPOINT trace



exit 0