linux-kernel - Re: [RFC][PATCH v5 3/4] trace/objtrace: Add testcases for objtrace trigger parsing

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Message-ID: <20220105195327.5eac3a45@rorschach.local.home>
Date:   Wed, 5 Jan 2022 19:53:27 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     fuyufan <835863489@...com>
Cc:     mhiramat@...nel.org, mingo@...hat.com, zanussi@...nel.org,
        linux-kernel@...r.kernel.org, xuhuijie <xuhujie2@...wei.com>,
        xuhuijie <xuhujie2@...il.com>
Subject: Re: [RFC][PATCH v5 3/4] trace/objtrace: Add testcases for objtrace
 trigger parsing

On Thu,  6 Jan 2022 00:02:53 +0000
fuyufan <835863489@...com> wrote:

> From: xuhuijie <xuhujie2@...wei.com>

Needs a change log.

-- Steve

> 
> Signed-off-by: xuhuijie <xuhujie2@...wei.com>
> ---
>  .../ftrace/test.d/trigger/trigger-objtrace.tc | 41 +++++++++++++++++++
>  1 file changed, 41 insertions(+)
>  create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc
> new file mode 100644
> index 000000000000..4efcd7eee694
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc
> @@ -0,0 +1,41 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0
> +# description: event trigger - test objtrace-trigger
> +# requires: kprobe_events
> +
> +fail() { #msg
> +    echo $1
> +    exit_fail
> +}
> +
> +echo 'p bio_add_page arg1=$arg1' > kprobe_events
> +
> +FEATURE=`grep objtrace events/kprobes/p_bio_add_page_0/trigger`
> +if [ -z "$FEATURE" ]; then
> +    echo "objtrace trigger is not supported"
> +    exit_unsupported
> +fi
> +
> +echo "Test objtrace trigger"
> +echo 'objtrace:add:0x28(arg1):u32:1 if comm == "cat"' > \
> +	events/kprobes/p_bio_add_page_0/trigger
> +if [ -z $? ]; then
> +	fail "objtrace trigger syntax error"
> +fi
> +
> +echo "Test objtrace semantic errors"
> +
> +# Being lack of type size
> +! echo 'objtrace:add:0x28(arg1):1' > events/kprobes/p_bio_add_page_0/trigger
> +# Being lack of objtrace command
> +! echo 'objtrace:0x28(arg1):u32:1' > events/kprobes/p_bio_add_page_0/trigger
> +# Bad parameter name
> +! echo 'objtrace:add:argx:u32:1' > events/kprobes/p_bio_add_page_0/trigger
> +
> +echo "reset objtrace trigger"
> +
> +echo '!objtrace:add:0x28(arg1):u32' > \
> +	events/kprobes/p_bio_add_page_0/trigger
> +echo '-:p_bio_add_page_0' >> ./kprobe_events
> +
> +exit 0