Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932124AbZINPCo (ORCPT ); Mon, 14 Sep 2009 11:02:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755789AbZINPCm (ORCPT ); Mon, 14 Sep 2009 11:02:42 -0400 Received: from mga14.intel.com ([143.182.124.37]:34269 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755712AbZINPCl convert rfc822-to-8bit (ORCPT ); Mon, 14 Sep 2009 11:02:41 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.44,383,1249282800"; d="scan'208";a="187386787" From: "Sosnowski, Maciej" To: "Williams, Dan J" CC: "linux-kernel@vger.kernel.org" , "linux-raid@vger.kernel.org" , "netdev@vger.kernel.org" Date: Mon, 14 Sep 2009 16:02:37 +0100 Subject: RE: [PATCH 29/29] ioat2, 3: cacheline align software descriptor allocations Thread-Topic: [PATCH 29/29] ioat2, 3: cacheline align software descriptor allocations Thread-Index: AcotCAaPgnXTQr4TS/eLPpow/YEUGQIRFAZA Message-ID: <129600E5E5FB004392DDC3FB599660D7B554819B@irsmsx504.ger.corp.intel.com> References: <20090904022733.32667.77626.stgit@dwillia2-linux.ch.intel.com> <20090904023257.32667.53926.stgit@dwillia2-linux.ch.intel.com> In-Reply-To: <20090904023257.32667.53926.stgit@dwillia2-linux.ch.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 684 Lines: 15 Williams, Dan J wrote: > All the necessary fields for handling an ioat2,3 ring entry can fit into > one cacheline. Move ->len prior to ->txd in struct ioat_ring_ent, and > move allocation of these entries to a hw-cache-aligned kmem cache to > reduce the number of cachelines dirtied for descriptor management. > > Signed-off-by: Dan Williams > --- Signed-off-by: Maciej Sosnowski -- 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/