linux-kernel - Re: [PATCH 09/12] perf diff: Add weighted diff computation way to compare hist entries

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Message-ID: <1347024784.1505.12.camel@leonhard>
Date:	Fri, 07 Sep 2012 22:33:04 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andi Kleen <andi@...stfloor.org>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 09/12] perf diff: Add weighted diff computation way to
 compare hist entries

2012-09-07 (금), 11:28 +0200, Jiri Olsa:
> On Fri, Sep 07, 2012 at 02:58:19PM +0900, Namhyung Kim wrote:
> > I don't see why this do { } while(0) loop is necessary.
> > How about this?
> > 
> > 	w1 = strtol(opt, &tmp, 10);
> > 	if (*tmp != ',')
> > 		goto error;
> > 
> > 	opt = tmp + 1;
> > 	w2 = strtol(opt, &tmp, 10);
> > 	if (*tmp != '\0')
> > 		goto error;
> > 
> > 	if (!w1 || !w2)
> > 		goto error;
> 
> I do this not to use labels & goto ;)

But isn't it usual?  Do you have a reason not to do it?

I was a bit confused finding which path actually make it a loop... but
there's none. :-/

Thanks,
Namhyung


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