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selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD"

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This patch adds test cases for new print format type "%pd/%pD".The test cases
test the following items:
1. Test README if add "%pd/%pD" type;
2. Test "%pd" type for dput();
3. Test "%pD" type for vfs_read();

This test case require enable CONFIG_HAVE_FUNCTION_ARG_ACCESS_API configuration.

Link: https://lore.kernel.org/all/20240322064308.284457-5-yebin10@huawei.com/

Signed-off-by: Ye Bin <yebin10@huawei.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
This commit is contained in:
Ye Bin 2024-03-22 14:43:07 +08:00 committed by Masami Hiramatsu (Google)
parent 5e37460f5f
commit c01768b05e
1 changed files with 40 additions and 0 deletions
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40
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_vfs.tc Normal file
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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Kprobe event VFS type argument
# requires: kprobe_events "%pd/%pD":README
: "Test argument %pd with name"
echo 'p:testprobe dput name=$arg1:%pd' > kprobe_events
echo 1 > events/kprobes/testprobe/enable
grep -q "1" events/kprobes/testprobe/enable
echo 0 > events/kprobes/testprobe/enable
grep "dput" trace | grep -q "enable"
echo "" > kprobe_events
echo "" > trace
: "Test argument %pd without name"
echo 'p:testprobe dput $arg1:%pd' > kprobe_events
echo 1 > events/kprobes/testprobe/enable
grep -q "1" events/kprobes/testprobe/enable
echo 0 > events/kprobes/testprobe/enable
grep "dput" trace | grep -q "enable"
echo "" > kprobe_events
echo "" > trace
: "Test argument %pD with name"
echo 'p:testprobe vfs_read name=$arg1:%pD' > kprobe_events
echo 1 > events/kprobes/testprobe/enable
grep -q "1" events/kprobes/testprobe/enable
echo 0 > events/kprobes/testprobe/enable
grep "vfs_read" trace | grep -q "enable"
echo "" > kprobe_events
echo "" > trace
: "Test argument %pD without name"
echo 'p:testprobe vfs_read $arg1:%pD' > kprobe_events
echo 1 > events/kprobes/testprobe/enable
grep -q "1" events/kprobes/testprobe/enable
echo 0 > events/kprobes/testprobe/enable
grep "vfs_read" trace | grep -q "enable"
echo "" > kprobe_events
echo "" > trace