linux-kernel - Re: [PATCH -tip] x86: headers - include linux/types.h instead of asm/types.h

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Message-ID: <20090113131020.GD7682@localhost>
Date:	Tue, 13 Jan 2009 16:10:20 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Harvey Harrison <harvey.harrison@...il.com>,
	Sam Ravnborg <sam@...nborg.org>,
	Jaswinder Singh Rajput <jaswinderrajput@...il.com>
Subject: Re: [PATCH -tip] x86: headers - include linux/types.h instead of
	asm/types.h

[Ingo Molnar - Tue, Jan 13, 2009 at 01:59:28PM +0100]
| 
| * Cyrill Gorcunov <gorcunov@...il.com> wrote:
| 
| > [Cyrill Gorcunov - Tue, Jan 13, 2009 at 03:09:05PM +0300]
| > | Impact: cleanup
| > | 
| > | 'make headers_check' warns that linux/types.h is
| > | preferred over asm/types.h. So be it.
| > | 
| > | Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
| > | CC: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
| > | CC: Sam Ravnborg <sam@...nborg.org>
| > | CC: Harvey Harrison <harvey.harrison@...il.com>
| > | ---
| > | 
| > |  arch/x86/include/asm/e820.h       |    2 ++
| > |  arch/x86/include/asm/kvm.h        |    2 +-
| > |  arch/x86/include/asm/mce.h        |    2 +-
| > |  arch/x86/include/asm/mtrr.h       |    1 +
| > |  arch/x86/include/asm/ptrace-abi.h |    2 +-
| > |  arch/x86/include/asm/sigcontext.h |    2 +-
| > |  arch/x86/include/asm/swab.h       |    2 +-
| > |  7 files changed, 8 insertions(+), 5 deletions(-)
| > |
| > ...
| > 
| > well... on the other hand I'm not sure if it's really
| > a good idea to include linux/types.h where we need only
| > __u[8,16] and so on definitions.
| 
| Well, linux/types.h is supposed to be a 'lightweight', 'core data types 
| only' kind of header file, so including it is not wrong per se.
| 
| Sam, is there some other preferred way perhaps to resolve these?
| 
| 	Ingo
| 

Until such a file not passed to some *.S. For example for e820.h
we have it included to arch/x86/boot/header.S but fortunately
we're bound by __ASSEMBLY__. So there linux/types.h shouldn't hurt.
Will check others and report then.

		- Cyrill -
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