Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264311AbTKKQ2N (ORCPT ); Tue, 11 Nov 2003 11:28:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264312AbTKKQ2N (ORCPT ); Tue, 11 Nov 2003 11:28:13 -0500 Received: from dp.samba.org ([66.70.73.150]:38560 "EHLO lists.samba.org") by vger.kernel.org with ESMTP id S264311AbTKKQ2M (ORCPT ); Tue, 11 Nov 2003 11:28:12 -0500 Date: Wed, 12 Nov 2003 03:25:23 +1100 From: Anton Blanchard To: Ravikiran G Thirumalai Cc: Jack Steiner , linux-kernel@vger.kernel.org Subject: Re: hot cache line due to note_interrupt() Message-ID: <20031111162523.GN930@krispykreme> References: <20031110215844.GC21632@sgi.com> <20031111082915.GC1130@llm08.in.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031111082915.GC1130@llm08.in.ibm.com> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 584 Lines: 14 > The answer to this is probably alloc_percpu for the counters. > right now this might not possible because irq_desc_t table might be used very > early, and alloc_percpu uses slab underneath. alloc_percpu will have to be > made to work early enough for this.... Also keep in mind the memory bloat with high NR_IRQS and NR_IRQS. Anton - 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/