From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 27 Jul 2006 08:33:01 +0300 (EEST) From: Pekka J Enberg Subject: Re: [patch 2/2] slab: always consider arch mandated alignment In-Reply-To: Message-ID: References: <20060723073500.GA10556@osiris.ibm.com> <20060723162427.GA10553@osiris.ibm.com> <20060726085113.GD9592@osiris.boeblingen.de.ibm.com> <20060726101340.GE9592@osiris.boeblingen.de.ibm.com> <20060726105204.GF9592@osiris.boeblingen.de.ibm.com> <44C7AF31.9000507@colorfullife.com> <44C7B842.5060606@colorfullife.com> <44C7C261.6050602@colorfullife.com> <44C7C46C.4090201@colorfullife.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Manfred Spraul , Heiko Carstens , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Martin Schwidefsky List-ID: On Wed, 26 Jul 2006, Christoph Lameter wrote: > We now want to say that SLAB_HWCACHE_ALIGN is only a suggestion to be > disposed of if debug is on whereas an explicitly specified alignment must be enforced? Yes and that's what we have been saying all along. When you want performance, you use SLAB_HWCACHE_ALIGN and let the allocator do its job. I don't see much point from API point of view for the caller to explicitly ask for a given alignment and then in addition pass a 'yes I really meant' flag (SLAB_DEBUG_OVERRIDE). So Christoph, unless you can point out a specific problem with my patch, I'll queue it up to Andrew. Thanks. Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org