linux-kernel - Re: [PATCH v5 1/5] vmcore: Introduce ELF header in new memory feature

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Date:	Mon, 10 Jun 2013 15:53:25 +0200
From:	Michael Holzheu <holzheu@...ux.vnet.ibm.com>
To:	HATAYAMA Daisuke <d.hatayama@...il.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>, Jan Willeke <willeke@...ibm.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org
Subject: Re: [PATCH v5 1/5] vmcore: Introduce ELF header in new memory
 feature

On Mon, 10 Jun 2013 22:35:30 +0900
HATAYAMA Daisuke <d.hatayama@...il.com> wrote:

> 2013/6/8 Michael Holzheu <holzheu@...ux.vnet.ibm.com>:
> <cut>
> > @@ -935,10 +967,17 @@ static int __init vmcore_init(void)
> >  {
> >         int rc = 0;
> >
> > -       /* If elfcorehdr= has been passed in cmdline, then capture the dump.*/
> > -       if (!(is_vmcore_usable()))
> > -               return rc;
> > +       /*
> > +        * If elfcorehdr= has not been passed in cmdline, try to get the
> > +        * header from 2nd kernel, then capture the dump.
> > +        */
> > +       if (!(is_vmcore_usable())) {
> > +               rc = elfcorehdr_alloc();
> > +               if (rc)
> > +                       return rc;
> > +       }
> 
> Here you removed comment in the 1st path. Please keep it.

Perhaps something like the following:

/*
 * If elfcorehdr= has been passed in cmdline, then capture the dump.
 * Otherwise, try to get the header from the 2nd kernel.
 */

Michael

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