linux-kernel - Re: [PATCH 3/8] perf, tools: Add --branch-history option to report v2

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Date:	Tue, 11 Mar 2014 21:21:49 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Andi Kleen <andi@...stfloor.org>, acme@...hat.com,
	mingo@...nel.org, linux-kernel@...r.kernel.org, eranian@...gle.com,
	namhyung@...nel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 3/8] perf, tools: Add --branch-history option to report
 v2

On Tue, Mar 11, 2014 at 04:25:02PM +0100, Jiri Olsa wrote:
> On Tue, Mar 11, 2014 at 01:31:54AM +0100, Andi Kleen wrote:
> > > this is *same* as parse_branch_mode function and seems to be not needed,
> > > I think both branch-stack and branch-history options could be handled
> > > by OPT_BOOLEAN
> > 
> > They can't because the type checker requires bool, and these variables
> > are tristate (UNSET, TRUE, FALSE)
> > 
> > -Andi
> 
> hum, I can see only 2 states there (please check patch below).. what do I miss?

-1 means undefined. Your patch changes things that the override would
happen even if the user explicitely set these options. It's not
equivalent.


-Andi
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