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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next prev parent 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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