linux-kernel - Re: [PATCH v2 4/4] tracing: Add new testcases for hist trigger parsing errors

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Date:   Wed, 29 Jan 2020 09:22:00 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Tom Zanussi <zanussi@...nel.org>
Cc:     mhiramat@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] tracing: Add new testcases for hist trigger
 parsing errors

On Fri, 28 Jun 2019 12:40:23 -0500
Tom Zanussi <zanussi@...nel.org> wrote:

> Add a testcase ensuring that the tracing error_log correctly displays
> hist trigger parsing errors.

Hi Tom,

I noticed that I never applied these patches (just did), but I also
notice that this test case fails.

Can you have a look on my ftrace/core branch:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git

Thanks,

-- Steve

> 
> Signed-off-by: Tom Zanussi <zanussi@...nel.org>
> Reviewed-by: Masami Hiramatsu <mhiramat@...nel.org>
> ---
>  .../test.d/trigger/trigger-hist-syntax-errors.tc   | 32 ++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>  create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc
> new file mode 100644
> index 000000000000..d44087a2f3d1
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc
> @@ -0,0 +1,32 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0
> +# description: event trigger - test histogram parser errors
> +
> +if [ ! -f set_event -o ! -d events/kmem ]; then
> +    echo "event tracing is not supported"
> +    exit_unsupported
> +fi
> +
> +if [ ! -f events/kmem/kmalloc/trigger ]; then
> +    echo "event trigger is not supported"
> +    exit_unsupported
> +fi
> +
> +if [ ! -f events/kmem/kmalloc/hist ]; then
> +    echo "hist trigger is not supported"
> +    exit_unsupported
> +fi
> +
> +[ -f error_log ] || exit_unsupported
> +
> +check_error() { # command-with-error-pos-by-^
> +    ftrace_errlog_check 'hist:kmem:kmalloc' "$1" 'events/kmem/kmalloc/trigger'
> +}
> +
> +check_error 'hist:keys=common_pid:vals=bytes_req:sort=common_pid,^junk'	# INVALID_SORT_FIELD
> +check_error 'hist:keys=common_pid:vals=bytes_req:^sort='		# EMPTY_ASSIGNMENT
> +check_error 'hist:keys=common_pid:vals=bytes_req:^sort=common_pid,'	# EMPTY_SORT_FIELD
> +check_error 'hist:keys=common_pid:vals=bytes_req:sort=common_pid.^junk'	# INVALID_SORT_MODIFIER
> +check_error 'hist:keys=common_pid:vals=bytes_req,bytes_alloc:^sort=common_pid,bytes_req,bytes_alloc'	# TOO_MANY_SORT_FIELDS
> +
> +exit 0