From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 22 Jun 2000 21:26:56 +0200 (CEST) From: Andrea Arcangeli Subject: Re: 2.4: why is NR_GFPINDEX so large? In-Reply-To: <20000621213507Z131177-21003+34@kanga.kvack.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Timur Tabi Cc: Linux MM mailing list List-ID: On Wed, 21 Jun 2000, Timur Tabi wrote: >So I suppose the best way to optimize this is to make sure that >"NR_GFPINDEX * sizeof(zonelist_t)" is a multiple of the cache line size? Yes but only in SMP. On an UP compile you can save space. For this purpose in ac22-class there's a ____cacheline_aligned_in_smp macro that you can use for things like that (it relies on the compiler enterely). Andrea -- 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.eu.org/Linux-MM/