From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ns.suse.de ([195.135.220.2]:40397 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753512AbXDTK4W (ORCPT ); Fri, 20 Apr 2007 06:56:22 -0400 From: Andi Kleen Subject: larger per cpu data Date: Fri, 20 Apr 2007 12:46:17 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704201246.17531.ak@suse.de> Sender: linux-arch-owner@vger.kernel.org To: tony.luck@intel.com Cc: linux-arch@vger.kernel.org List-ID: Hi, I've been looking at optimizing the network per CPU statistics and the best way to do that would be to move them back to direct per CPU data. Currently they are allocated separately because there used to be some trouble on x86 (and ia64?) with limited per CPU areas. At least the x86 side has been fixed now. I heard there were some problems with ia64 have those been fixed too? Anybody would have a problem with increasing per CPU data in a standard kernel by a few KB? -Andi