linux-kernel - Re: [PATCH 5/5] perf test: squelch warnings about undefined sizeof

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Message-ID: <CAM9d7ciRP17_YV5dtrphWKEXEzOTy7XQw7tG13oVs5RV3XzcYg@mail.gmail.com>
Date:	Tue, 18 Mar 2014 23:26:53 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Ramkumar Ramachandra <artagnon@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 5/5] perf test: squelch warnings about undefined sizeof

Hi Jiri,

On Tue, Mar 18, 2014 at 10:23 PM, Jiri Olsa <jolsa@...hat.com> wrote:
> On Tue, Mar 18, 2014 at 05:09:33PM +0900, Namhyung Kim wrote:
>> On Mon, 17 Mar 2014 18:26:38 -0400, Ramkumar Ramachandra wrote:
>> > perf test emits the following warnings on the parse events test:
>> >
>> >   $ perf test
>> >    5: parse events tests
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     Warning: function sizeof not defined
>> >     ...
>> >
>> > Squelch the warnings by explicitly ignoring the sizeof function.
>>
>> It just hides the warning leaving the real problem untouched.  If you
>> really don't want to see those, I guess installing proper plugin for the
>> failing events will help you (in case you didn't).
>
> it wont' help, sizeof is special.. AFAIK we did not figure
> out a way to handle that so far
>
> but I think it was used only in one trace subsystem.. maybe we
> could replace it and forbid to use it in future ;-)

Yep, I know.  But I meant that if we have a handler for the failing
event, it might print the event without even using the sizeof somehow.
;-)

Thanks,
Namhyung
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