linux-kernel - Re: [PATCH 0/24] x86: arch/x86/kernel/ cleanups

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Message-ID: <20080728212052.GB9986@elte.hu>
Date:	Mon, 28 Jul 2008 23:20:52 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Gustavo F. Padovan" <gustavo@....ic.unicamp.br>
Cc:	linux-kernel@...r.kernel.org,
	the arch/x86 maintainers <x86@...nel.org>
Subject: Re: [PATCH 0/24] x86: arch/x86/kernel/ cleanups


* Gustavo F. Padovan <gustavo@....ic.unicamp.br> wrote:

> Ingo,
> 
> I removed many extra whitespaces and tabs from arch/x86/kernel/

hm, we tend to do a full cleanup of files we touch for style 
cleanup.

You can check some style errors via:

  scripts/checkpatch.pl --file arch/x86/kernel/alternative.c

but it also makes sense to look at the file and figure out places that 
look ugly.

> 	x86: kernel/alternative.c cleanup

total: 4 errors, 15 warnings, 4 checks, 540 lines checked

> 	x86: kernel/apm_32.c cleanup

total: 6 errors, 27 warnings, 5 checks, 2416 lines checked

[ etc. ]

If we did each style problem separately we'd be generating over 1 
million commits for the entire tree - that's not feasible. So we go per 
file and once a file has been cleaned up, we keep it clean.

Note, checkpatch errors can be false positives occasionally, and not all 
warnings have to be fixed all the time - ask if unsure about whether to 
fix something or not.

It's also useful to check that the .o's are unchanged after a cleanup. 
You can see commits that do that, for example:

 commit d4413732b54a17684e48fbb4b52fade5bf965b5d
 Author: Paolo Ciarrocchi <paolo.ciarrocchi@...il.com>
 Date:   Tue Feb 19 23:51:27 2008 +0100

    x86: coding style fixes to arch/x86/oprofile/op_model_athlon.c

    The patch fixes 33 errors and a few warnings reported by checkpatch.pl

    arch/x86/oprofile/op_model_athlon.o:
       text    data     bss     dec     hex filename
       1691       0      32    1723     6bb op_model_athlon.o.before
       1691       0      32    1723     6bb op_model_athlon.o.after
    md5:
    c354bc2d7140e1e626c03390eddaa0a6  op_model_athlon.o.before.asm
    c354bc2d7140e1e626c03390eddaa0a6  op_model_athlon.o.after.asm

    Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@...il.com>
    Signed-off-by: Ingo Molnar <mingo@...e.hu>

	Ingo
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