Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758239AbYCYQYR (ORCPT ); Tue, 25 Mar 2008 12:24:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756831AbYCYQYH (ORCPT ); Tue, 25 Mar 2008 12:24:07 -0400 Received: from relay1.sgi.com ([192.48.171.29]:49402 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756796AbYCYQYG (ORCPT ); Tue, 25 Mar 2008 12:24:06 -0400 Date: Tue, 25 Mar 2008 11:24:04 -0500 (CDT) From: Alan Mayer To: Ingo Molnar Cc: Alan Mayer , torvalds@linux-foundation.org, linux-kernel list , Robin Holt , Jack Steiner , Russ Anderson Subject: Re: [PATCH] x86_64: resize NR_IRQS for large machines In-Reply-To: <20080325161901.GF27174@elte.hu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1422 Lines: 49 On Tue, 25 Mar 2008, Ingo Molnar wrote: > > * Alan Mayer wrote: > > > Subject: [PATCH] x86_64: resize NR_IRQS for large machines > > > > From: Alan Mayer > > > > On machines with very large numbers of cpus, tables that are > > dimensioned by NR_IRQS get very large, especially the irq_desc table. > > They are also very sparsely used. When the cpu count is > > > MAX_IO_APICS, use MAX_IO_APICS to set NR_IRQS, otherwise use NR_CPUS. > > > > Signed-off-by: Alan Mayer > > Reviewed-by: Christoph Lameter > > thanks, applied. I suspect this can wait until .26, as there appears to > be a number of other patches that you need to get these boxes running on > vanilla, right? > > Ingo That's right. Thanks. --ajm > -- > 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/ > Spirits are using me, A larger voice is calling me. -- Alan J. Mayer SGI ajm@sgi.com WORK: 651-683-3131 HOME: 651-407-0134 -- -- 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/