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

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Message-ID: <20140318132355.GA7845@krava.brq.redhat.com>
Date:	Tue, 18 Mar 2014 14:23:55 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
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

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 ;-)

jirka
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