Commit f6e2253a authored Mar 04, 2024 by Masami Hiramatsu (Google)

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>

parent 25f00e40

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

0 → 100644

+18 −0

Original line number	Diff line number	Diff line
		#!/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/' `

tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_entry_arg.tc

0 → 100644

+18 −0

Original line number	Diff line number	Diff line
		#!/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/' `