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

From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
To: HATAYAMA Daisuke <d.hatayama@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>, Jan Willeke <willeke@de.ibm.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	linux-kernel@vger.kernel.org, kexec@lists.infradead.org
Subject: Re: [PATCH v5 1/5] vmcore: Introduce ELF header in new memory feature
Date: Mon, 10 Jun 2013 15:53:25 +0200	[thread overview]
Message-ID: <20130610155325.5e75f243@holzheu> (raw)
In-Reply-To: <CABOkKT33diYR+7Nt9HdRxxqnb1KGkUz8YLTjGODsv2s5vj+3og@mail.gmail.com>

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

> 2013/6/8 Michael Holzheu <holzheu@linux.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