linux-kernel - Re: [patch v2 02/10] kdump: Make kimage_load_crash

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Date:	Tue, 02 Aug 2011 11:30:03 +0200
From:	Michael Holzheu <holzheu@...ux.vnet.ibm.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	ebiederm@...ssion.com, mahesh@...ux.vnet.ibm.com, hbabu@...ibm.com,
	oomichi@....nes.nec.co.jp, horms@...ge.net.au,
	schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-s390@...r.kernel.org
Subject: Re: [patch v2 02/10] kdump: Make kimage_load_crash_segment() weak

Hello Vivek,

On Mon, 2011-08-01 at 16:31 -0400, Vivek Goyal wrote:
> On Wed, Jul 27, 2011 at 02:55:06PM +0200, Michael Holzheu wrote:

[snip]

> > --- a/kernel/kexec.c
> > +++ b/kernel/kexec.c
> > @@ -842,8 +842,8 @@ out:
> >  	return result;
> >  }
> >  
> > -static int kimage_load_crash_segment(struct kimage *image,
> > -					struct kexec_segment *segment)
> > +int __weak kimage_load_crash_segment(struct kimage *image,
> > +				     struct kexec_segment *segment)
> 
> A comment here why we are making it weak should help in increasing
> the code readability.

What about the following:

/*
 * Load crash segment into memory. Architecture code can override this
 * function. E.g. this is necessary for architectures that do not
 * create page tables for crashkernel memory.
 */
int __weak kimage_load_crash_segment(struct kimage *image,

Michael

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