From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 19 Sep 2006 07:10:18 -0700 (PDT) From: Christoph Lameter Subject: Re: [PATCH] Get rid of zone_table V2 In-Reply-To: <20060918233337.ef539a2b.akpm@osdl.org> Message-ID: References: <20060918132818.603196e2.akpm@osdl.org> <20060918161528.9714c30c.akpm@osdl.org> <20060918165808.c410d1d4.akpm@osdl.org> <20060918173134.d3850903.akpm@osdl.org> <20060918233337.ef539a2b.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-mm@kvack.org, Andy Whitcroft , Dave Hansen List-ID: On Mon, 18 Sep 2006, Andrew Morton wrote: > On Mon, 18 Sep 2006 23:12:31 -0700 (PDT) > Christoph Lameter wrote: > > > Hmmm... Actually one can get much better code. If I remove the padding > > from struct zone then struct zone shrinks from 0x480 to 0x400 in length > > That padding is there to prevent the rather unrelated lru_lock and > list_lock from falling into the same cacheline, which is presumed to be a > bad thing... Yeah but we have added so much stuff in between that such a thing is highly unlikely. Even with padding we could increase the size of zone to the next power of two. -- 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