Date: Wed, 1 Aug 2007 19:10:43 -0400
From: Jakub Jelinek <jakub@redhat.com>
To: Andi Kleen <ak@suse.de>
Cc: Adrian Bunk <bunk@stusta.de>, linux-kernel@vger.kernel.org
Subject: Re: smaller kernel with no real time futexes
Message-ID: <20070801231043.GP2063@devserv.devel.redhat.com>
Reply-To: Jakub Jelinek <jakub@redhat.com>
References: <200708012124.34341.ak@suse.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200708012124.34341.ak@suse.de>
User-Agent: Mutt/1.4.1i
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 775
Lines: 21

On Wed, Aug 01, 2007 at 09:24:34PM +0200, Andi Kleen wrote:
> Adrian,
> 
> You said earlier you're looking at smaller allnoconfig kernels.
> One thing I noticed recently that realtime pi futexes are always
> enabled and that pulls in a lot of other code (like the plists) 
> 
> Userland needs to handle them not being available anyways for older
> kernels.
> 
> Might be worth looking into turning that into a CONFIG.

That's a very bad idea.  glibc configured for 2.6.18 and higher kernels
assumes PI futexes are present.

	Jakub
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/