selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD"
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>
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Kprobe event VFS type argument
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# requires: kprobe_events "%pd/%pD":README
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: "Test argument %pd with name"
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echo 'p:testprobe dput name=$arg1:%pd' > kprobe_events
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echo 1 > events/kprobes/testprobe/enable
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grep -q "1" events/kprobes/testprobe/enable
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echo 0 > events/kprobes/testprobe/enable
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grep "dput" trace | grep -q "enable"
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echo "" > kprobe_events
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echo "" > trace
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: "Test argument %pd without name"
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echo 'p:testprobe dput $arg1:%pd' > kprobe_events
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echo 1 > events/kprobes/testprobe/enable
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grep -q "1" events/kprobes/testprobe/enable
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echo 0 > events/kprobes/testprobe/enable
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grep "dput" trace | grep -q "enable"
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echo "" > kprobe_events
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echo "" > trace
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: "Test argument %pD with name"
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echo 'p:testprobe vfs_read name=$arg1:%pD' > kprobe_events
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echo 1 > events/kprobes/testprobe/enable
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grep -q "1" events/kprobes/testprobe/enable
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echo 0 > events/kprobes/testprobe/enable
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grep "vfs_read" trace | grep -q "enable"
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echo "" > kprobe_events
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echo "" > trace
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: "Test argument %pD without name"
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echo 'p:testprobe vfs_read $arg1:%pD' > kprobe_events
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echo 1 > events/kprobes/testprobe/enable
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grep -q "1" events/kprobes/testprobe/enable
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echo 0 > events/kprobes/testprobe/enable
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grep "vfs_read" trace | grep -q "enable"
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echo "" > kprobe_events
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echo "" > trace
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