linux-kernel - Re: [PATCH] remove PAGE_SIZE from headers

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Date:	Sun, 15 Jul 2007 09:51:44 +0200
From:	Olaf Hering <olaf@...fle.de>
To:	Mike Frysinger <vapier.adi@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] remove PAGE_SIZE from headers_install

On Sat, Jul 14, Mike Frysinger wrote:

> On 7/14/07, Olaf Hering <olaf@...fle.de> wrote:
> >Declare PAGE_SIZE as getpagesize() for userspace.
> >PAGE_SIZE is used in resource.h and shm.h
> >
> >define PAGE_SIZE in asm-generic/page.h
> >guard get_order() with _ARCH_HAS_GET_ORDER for ia64 and xtensa
> >include asm-generic/page.h in asm/page.h
> >make asm/page.h nearly empty by moving the #ifdef guards up
> >remove unneeded page.h export from frv
> 
> imo, asm/page.h should just go away for userspace.  the attached patch
> is what i've been using in Gentoo ... but somethings (like an arch or
> two in glibc) still assume asm/page.h is OK.  in general though,
> considering asm/page.h has become so unreliable lately (a large number
> of arches ifdef the whole thing out), most packages out there have
> updated already to use the userspace interface from unistd.h.
> -mike

nothing appears to use linux/shm.h and linux/resource.h

strace-4.5.15 uses linux/a.out.h in #ifdef LINUXSPARC

glibc uses asm/elf.h in sys/procfs.h, also in alpha and powerpc.

kexec-tools use linux/elf.h

psmisc and ltrace use linux/user.h
glibc (for sh) and mono-debugger use asm/user.h

And alot of asm/page.h users.

Thats the upstream status today. What you do at home doesnt really
matter.
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