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linux/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_entry_arg.tc
Masami Hiramatsu (Google) f6e2253a61 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>
2024-03-07 00:27:44 +09:00

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#!/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/' `