linux-kernel - Re: [RFC, Announce] Unified x86 architecture, arch/x86

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Message-Id: <1185090646.4012.149.camel@chaos>
Date:	Sun, 22 Jul 2007 09:50:46 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Chris Wright <chrisw@...s-sol.org>
Cc:	Matt Mackall <mpm@...enic.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>, Andi Kleen <ak@...e.de>,
	Ingo Molnar <mingo@...e.hu>,
	Arjan van de Ven <arjan@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC, Announce] Unified x86 architecture, arch/x86

On Sat, 2007-07-21 at 16:51 -0700, Chris Wright wrote:
> * Matt Mackall (mpm@...enic.com) wrote:
> > Can we see some stats on:
> > 
> > How many files were auto-merged?
> > How many files got 32.c and 64.c extensions?
> > How many existed only in one arch?
> 
> It's mostly about file movement first.
> 
>  918 files changed, 4745 insertions(+), 2836 deletions(-)

Hmm, did you forget to make distclean ?

Numbers from the script:

include/asm-i386     240 files
include/asm-x86_64   169 files
------------------------------
                     409 files

include/asm-x86      389 files

arch/i386            335 files
arch/x86_64          141 files
------------------------------
                     476 files

arch/x86             484 files

The increase here is due to migration helper files which only include
the (_32.x or the _64.x) variant.

Makefile helpers       9 files
Kconfig helpers        1 file
Source helpers         4 files
------------------------------
                      14 files

Summary:
vanilla            22657 files
vanilla->x86       22649 files

------------------------------

include/x86 has 125 _32 and 125 _64 files
arch/x86 has     55 _32 and  55 _64 files

25 files were auto-merged

Looking at include/asm-x86/*_[32/64].h there are offhand ~ 50 of the 125
which differ only minimal (white space damage, comment changes, ...),
where the unification is a no brainer.

	tglx


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