From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Date: Mon, 4 Mar 2024 03:41:05 +0000 (+0900)
Subject: selftests/ftrace: Add test cases for entry args at function exit
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f6e2253a617c4030b807a18383101b59d6f0f536;p=linux.git

selftests/ftrace: Add test cases for entry args at function exit

Add kretprobe and function exit probe test cases for checking whether
those can access entry arguments at function exit correctly.

Link: https://lore.kernel.org/all/170952366504.229804.11605173085475141091.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc
new file mode 100644
index 0000000000000..d183b8a8ecf82
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc
@@ -0,0 +1,18 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Function return probe entry argument access
+# requires: dynamic_events 'f[:[<group>/][<event>]] <func-name>':README 'kernel return probes support:':README
+
+echo 'f:tests/myevent1 vfs_open arg=$arg1' >> dynamic_events
+echo 'f:tests/myevent2 vfs_open%return arg=$arg1' >> dynamic_events
+
+echo 1 > events/tests/enable
+
+echo > trace
+cat trace > /dev/null
+
+function streq() {
+	test $1 = $2
+}
+
+streq `grep -A 1 -m 1 myevent1 trace | sed -r 's/^.*(arg=.*)/\1/' `
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc
new file mode 100644
index 0000000000000..53b82f36a1d01
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc
@@ -0,0 +1,18 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Kretprobe entry argument access
+# requires: kprobe_events 'kernel return probes support:':README
+
+echo 'p:myevent1 vfs_open arg=$arg1' >> kprobe_events
+echo 'r:myevent2 vfs_open arg=$arg1' >> kprobe_events
+
+echo 1 > events/kprobes/enable
+
+echo > trace
+cat trace > /dev/null
+
+function streq() {
+	test $1 = $2
+}
+
+streq `grep -A 1 -m 1 myevent1 trace | sed -r 's/^.*(arg=.*)/\1/' `