linux-kernel - [PATCH 1/2] selftests/ftrace: Fix BTFARG testcase to check fprobe is enabled correctly

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Message-Id: <171478279040.109670.8403406322028922001.stgit@devnote2>
Date: Sat,  4 May 2024 09:33:10 +0900
From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>,
	Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	mhiramat@...nel.org,
	Jiri Olsa <jolsa@...nel.org>,
	linux-kselftest@...r.kernel.org
Subject: [PATCH 1/2] selftests/ftrace: Fix BTFARG testcase to check fprobe is enabled correctly

From: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Since the dynevent/add_remove_btfarg.tc test case forgets to ensure that
fprobe is enabled for some structure field access tests which uses the
fprobe, it fails if CONFIG_FPROBE=n or CONFIG_FPROBE_EVENTS=n.
Fixes it to ensure the fprobe events are supported.

Fixes: d892d3d3d885 ("selftests/ftrace: Add BTF fields access testcases")
Cc: stable@...r.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 .../ftrace/test.d/dynevent/add_remove_btfarg.tc    |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
index b9c21a81d248..c0cdad4c400e 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc
@@ -53,7 +53,7 @@ fi
 
 echo > dynamic_events
 
-if [ "$FIELDS" ] ; then
+if [ "$FIELDS" -a "$FPROBES" ] ; then
 echo "t:tpevent ${TP2} obj_size=s->object_size" >> dynamic_events
 echo "f:fpevent ${TP3}%return path=\$retval->name:string" >> dynamic_events
 echo "t:tpevent2 ${TP4} p->se.group_node.next->prev" >> dynamic_events