linux-kernel - Re: [PATCH 18/18] 2.6.17.9 perfmon2 patch for review: new x86

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Message-ID: <20060823205734.GA16392@infradead.org>
Date:	Wed, 23 Aug 2006 21:57:34 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Stephane Eranian <eranian@....hp.com>
Cc:	Christoph Hellwig <hch@...radead.org>, Andi Kleen <ak@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 18/18] 2.6.17.9 perfmon2 patch for review: new x86_64 files

On Wed, Aug 23, 2006 at 08:53:21AM -0700, Stephane Eranian wrote:
> > Please use a string name, just like every other interface for
> > such selections.
> 
> What are the advantages at the syscall level (i.e., copy_user, 
> format parsing) compared to a 16-entry byte array?

None.  In fact for a machine it doesn't matter whether you parse
an char foo[16] array as uuid or string.  The string is extremly
useful when a human enters a game, e.g. when debugging or
trouble-shooting things.  (or just reading the code)

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