From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1752717AbbFHMgs (ORCPT <rfc822;w@1wt.eu>);
	Mon, 8 Jun 2015 08:36:48 -0400
Received: from bombadil.infradead.org ([198.137.202.9]:45053 "EHLO
	bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752176AbbFHMgj convert rfc822-to-8bit (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Mon, 8 Jun 2015 08:36:39 -0400
Message-ID: <1433766990.1495.39.camel@twins>
Subject: Re: randconfig build error with next-20150529, in
 crypto/jitterentropy.c
From: Peter Zijlstra <peterz@infradead.org>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
        Jim Davis <jim.epost@gmail.com>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        linux-next <linux-next@vger.kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        linux-crypto <linux-crypto@vger.kernel.org>,
        Waiman Long <Waiman.Long@hp.com>, Ingo Molnar <mingo@kernel.org>,
        "x86@kernel.org" <x86@kernel.org>, smueller@chronox.de
Date: Mon, 08 Jun 2015 14:36:30 +0200
In-Reply-To: <20150608122502.GA29454@gondor.apana.org.au>
References: <CA+r1ZhhfcfZ5RvAtFEnR0y3Y79dz2Em7JsuqF_XRPBRhL5pROQ@mail.gmail.com>
	 <CAHp75VeoCQSUCeswTCzUyKbV_e4RTt5t0yjEJLSzAvtX8jFvNw@mail.gmail.com>
	 <20150608122502.GA29454@gondor.apana.org.au>
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7BIT
X-Mailer: Evolution 3.10.4-0ubuntu2 
Mime-Version: 1.0
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Adding Stephan to Cc.

On Mon, 2015-06-08 at 20:25 +0800, Herbert Xu wrote:
> On Mon, Jun 08, 2015 at 03:21:09PM +0300, Andy Shevchenko wrote:
> > On Fri, May 29, 2015 at 10:14 PM, Jim Davis <jim.epost@gmail.com> wrote:
> > > Building with the attached random configuration file,
> > 
> > Hit the very same error against next-20150605.
> > 
> > The issue with that file we have no compiler optimization enabled. So,
> > guys, how you would recommend to fix it?
> 
> Stephan, can we get rid of the no optimisation requirement?

Would something like

#pragma GCC push_options
#pragma GCC optimize ("-O0")
static __u64 jent_fold_time(struct rand_data *ec, __u64 time,
			    __u64 *folded, __u64 loop_cnt)
{
	...
}
#pragma GCC pop_options

Be an option to allow the file to be compiled with regular optimizations
enabled?