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 08:44:27 -0600
From:   Tom Zanussi <zanussi@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.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

Hi Steve,

On Wed, 2020-01-29 at 09:22 -0500, Steven Rostedt wrote:
> 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
> 

All the trigger testcases are passing for me, including this one:

  # ./ftracetest test.d/trigger/trigger-hist-syntax-errors.tc 
=== Ftrace unit tests ===
[1] event trigger - test histogram parser errors	[PASS]


# of passed:  1
# of failed:  0
# of unresolved:  0
# of untested:  0
# of unsupported:  0
# of xfailed:  0
# of undefined(test bug):  0


Tom


> 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,b
> > ytes_req,bytes_alloc'	# TOO_MANY_SORT_FIELDS
> > +
> > +exit 0
> 
>