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From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: Michal Simek <michal.simek-g5w7nrANp4BDPfheJLI6IQ@public.gmane.org>
Cc: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
	linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	microblaze-uclinux-rVRm/Wmeqae7NGdpmJTKYQ@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Matthew Wilcox <matthew-Ztpu424NOJ8@public.gmane.org>
Subject: Re: USE_ELF_CORE_DUMP?
Date: Sun, 26 Apr 2009 11:21:03 +0200	[thread overview]
Message-ID: <20090426092103.GB8207@lst.de> (raw)
In-Reply-To: <49F16786.7010401-g5w7nrANp4BDPfheJLI6IQ@public.gmane.org>

On Fri, Apr 24, 2009 at 09:17:26AM +0200, Michal Simek wrote:
> Christoph Hellwig wrote:
> > Currently all architectures but microblaze unconditionally define
> > USE_ELF_CORE_DUMP.  The microblaze ommision seems like an error to
> > me, so can we just kill this ifdef and make sure we are the same
> > everywhere?
> >   
> Where did you find it?
> I haven't seen in in mainline (noMMU kernel). It is in my MMU patches
> which I want to send for review soon.

USE_ELF_CORE_DUMP is defined in arch/x86/include/*/elf.h (or sometimes
elf_{32,64}.h) on all architectures but microblaze.

> For noMMU I use CONFIG_BINFMT_FLAT (binfmt_flat.c) where I don't need
> USE_ELF_CORE_DUMP
> For MMU I use CONFIG_BINFMT_ELF (binfmt_elf.c) where USE_ELF_CORE_DUMP
> make sense to me.

USE_ELF_CORE_DUMP only comes into play if CONFIG_ELF_CORE is set, so in
the mmu example above.  These two are in fact always checked together,
so not setting USE_ELF_CORE_DUMP is an obscure way to disable elf core
dumps despite CONFIG_ELF_CORE being set.

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Michal Simek <michal.simek@petalogix.com>
Cc: Christoph Hellwig <hch@lst.de>,
	linux-arch@vger.kernel.org, microblaze-uclinux@itee.uq.edu.au,
	linux-kernel@vger.kernel.org, Matthew Wilcox <matthew@wil.cx>
Subject: Re: USE_ELF_CORE_DUMP?
Date: Sun, 26 Apr 2009 11:21:03 +0200	[thread overview]
Message-ID: <20090426092103.GB8207@lst.de> (raw)
Message-ID: <20090426092103.RzyM_oun-TIdoY8pLA5a14Sdr1x8s_FjQZ3HBWbAKCU@z> (raw)
In-Reply-To: <49F16786.7010401@petalogix.com>

On Fri, Apr 24, 2009 at 09:17:26AM +0200, Michal Simek wrote:
> Christoph Hellwig wrote:
> > Currently all architectures but microblaze unconditionally define
> > USE_ELF_CORE_DUMP.  The microblaze ommision seems like an error to
> > me, so can we just kill this ifdef and make sure we are the same
> > everywhere?
> >   
> Where did you find it?
> I haven't seen in in mainline (noMMU kernel). It is in my MMU patches
> which I want to send for review soon.

USE_ELF_CORE_DUMP is defined in arch/x86/include/*/elf.h (or sometimes
elf_{32,64}.h) on all architectures but microblaze.

> For noMMU I use CONFIG_BINFMT_FLAT (binfmt_flat.c) where I don't need
> USE_ELF_CORE_DUMP
> For MMU I use CONFIG_BINFMT_ELF (binfmt_elf.c) where USE_ELF_CORE_DUMP
> make sense to me.

USE_ELF_CORE_DUMP only comes into play if CONFIG_ELF_CORE is set, so in
the mmu example above.  These two are in fact always checked together,
so not setting USE_ELF_CORE_DUMP is an obscure way to disable elf core
dumps despite CONFIG_ELF_CORE being set.


  parent reply	other threads:[~2009-04-26  9:21 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-23 18:33 USE_ELF_CORE_DUMP? Christoph Hellwig
2009-04-23 18:48 ` USE_ELF_CORE_DUMP? Matthew Wilcox
2009-04-24  7:17 ` USE_ELF_CORE_DUMP? Michal Simek
     [not found]   ` <49F16786.7010401-g5w7nrANp4BDPfheJLI6IQ@public.gmane.org>
2009-04-26  9:21     ` Christoph Hellwig [this message]
2009-04-26  9:21       ` USE_ELF_CORE_DUMP? Christoph Hellwig
2009-09-26 19:50   ` [PATCH] kill USE_ELF_CORE_DUMP Christoph Hellwig
2009-09-26 20:03     ` Hugh Dickins
2009-09-29 12:05     ` Ralf Baechle

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