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From: Mike Frysinger <vapier@gentoo.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Sam Ravnborg <sam@ravnborg.org>, Ingo Molnar <mingo@elte.hu>,
	tglx@linutronix.de, mingo@redhat.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86 byteorder.h: use __asm__/__inline__ for userspace
Date: Sat, 27 Dec 2008 14:21:07 -0500	[thread overview]
Message-ID: <200812271421.10087.vapier@gentoo.org> (raw)
In-Reply-To: <49567EB5.5030409@zytor.com>

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On Saturday 27 December 2008 14:15:01 H. Peter Anvin wrote:
> Sam Ravnborg wrote:
> > On Sat, Dec 27, 2008 at 10:58:11AM -0800, H. Peter Anvin wrote:
> >> Sam Ravnborg wrote:
> >>> I wnet with the scripted conversion for now.
> >>> If that does not fly we can come back to this proposal.
> >>>
> >>> What I like most with the auto conversion is that we avoid
> >>> adding yet another special rule about how to do stuff in exported
> >>> headers.
> >>
> >> Indeed, and being keyword conversion, it's independent of context, at
> >> least as long as one doesn't have too many run-ins with weird uses of
> >> the # and ## preprocessor operators, which are a *lot* easier to rule
> >> out globally.
> >
> > Speaking of what we want to use in exported headers.
> > What is the recommendation with respect to uint32_t and friends?
> > To my best knowledge they are banned in exported headers as they
> > are not part of the kernel namespace and I see few users too.
> > But is this something we should check for?
>
> I personally would not be upset if we auto-changed {su}{8,16,32,64},
> [u]int_{8,16,32,64}_t

{su}{8,16,32,64} doesnt matter too much to me vs {u,}int_t{8,16,32,64}_t.  as 
long as people stop using __{su}{8,16,32,64}.  using the latter though does 
mean headers will more likely be "just usable" w/out needing linux/types.h 
include.  but then people would be forced to include stdint.h or similar 
before a linux header ... and that sucks.

unless of course we start adding appropriate C library includes for 
!__KERNEL__ ... i'd love that personally

> and bool into the appropriate __{su}{8,16,32,64}
> types and _Bool.

i dont get your bool comment.  the "bool" type is already a standard type.  
there is no conversion needed.
-mike

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  reply	other threads:[~2008-12-27 19:21 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-27  6:50 Mike Frysinger
2008-12-27  7:12 ` Sam Ravnborg
2008-12-27  7:55   ` Mike Frysinger
2008-12-27  8:47   ` Ingo Molnar
2008-12-27  9:21     ` Mike Frysinger
2008-12-27 18:57     ` Sam Ravnborg
2008-12-27 18:58       ` H. Peter Anvin
2008-12-27 19:12         ` Sam Ravnborg
2008-12-27 19:15           ` H. Peter Anvin
2008-12-27 19:21             ` Mike Frysinger [this message]
2008-12-27 19:23               ` H. Peter Anvin
2008-12-27 20:05                 ` Mike Frysinger
2008-12-27 20:45                   ` H. Peter Anvin
2008-12-27 20:57                     ` Mike Frysinger
2008-12-27 21:08                       ` H. Peter Anvin
2008-12-27 21:09                       ` H. Peter Anvin
2008-12-29 11:56                         ` Mike Frysinger
2008-12-29 17:44                           ` H. Peter Anvin
2008-12-27 19:24             ` Sam Ravnborg
2008-12-27 19:24               ` H. Peter Anvin
2008-12-29 11:12             ` [PATCH] kbuild: auto-convert size types in userspace headers Mike Frysinger
2008-12-29 14:03               ` Sam Ravnborg
2008-12-29 20:34                 ` Mike Frysinger
2008-12-29 20:36                   ` H. Peter Anvin
2008-12-29 22:04                     ` Mike Frysinger
2008-12-29 23:35                 ` H. Peter Anvin
2008-12-30 10:43                   ` Sam Ravnborg
2008-12-30 17:42                     ` H. Peter Anvin
2009-01-18 20:53                       ` Sam Ravnborg
2009-01-07 16:44           ` [PATCH] x86 byteorder.h: use __asm__/__inline__ for userspace David Woodhouse
2008-12-27 21:15     ` H. Peter Anvin
2008-12-28 22:35 ` Marcin Slusarz
2008-12-28 23:03   ` H. Peter Anvin

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