From patchwork Fri Sep 8 17:59:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Bodireddy, Bhanuprakash" X-Patchwork-Id: 811770 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=openvswitch.org (client-ip=140.211.169.12; helo=mail.linuxfoundation.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xplkH3rJ5z9s7h for ; Sat, 9 Sep 2017 04:11:03 +1000 (AEST) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 0B121C0F; Fri, 8 Sep 2017 18:09:11 +0000 (UTC) X-Original-To: dev@openvswitch.org Delivered-To: ovs-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B5588BF1 for ; Fri, 8 Sep 2017 18:09:07 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 7D6EAE5 for ; Fri, 8 Sep 2017 18:09:07 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga105.fm.intel.com with ESMTP; 08 Sep 2017 11:09:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.42,362,1500966000"; d="scan'208"; a="1216435638" Received: from silpixa00393942.ir.intel.com (HELO silpixa00393942.ger.corp.intel.com) ([10.237.223.42]) by fmsmga002.fm.intel.com with ESMTP; 08 Sep 2017 11:09:06 -0700 From: Bhanuprakash Bodireddy To: dev@openvswitch.org Date: Fri, 8 Sep 2017 18:59:15 +0100 Message-Id: <1504893565-110166-4-git-send-email-bhanuprakash.bodireddy@intel.com> X-Mailer: git-send-email 2.4.11 In-Reply-To: <1504893565-110166-1-git-send-email-bhanuprakash.bodireddy@intel.com> References: <1504893565-110166-1-git-send-email-bhanuprakash.bodireddy@intel.com> X-Spam-Status: No, score=-2.3 required=5.0 tests=RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD autolearn=disabled version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: [ovs-dev] [PATCH 03/13] tun-metadata: Reorder elements in tun_meta_entry structure. X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ovs-dev-bounces@openvswitch.org Errors-To: ovs-dev-bounces@openvswitch.org By reordering elements in tun_meta_entry structure, sum holes and pad bytes can be reduced there by reducing the tun_table size. Before: structure size: 56, sum holes: 4, pad bytes: 7 cachelines:1 After : structure size: 48, sum holes: 0, pad bytes: 3, cachelines:1 Signed-off-by: Bhanuprakash Bodireddy --- lib/tun-metadata.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/tun-metadata.c b/lib/tun-metadata.c index 2fbd9b6..0cb2456 100644 --- a/lib/tun-metadata.c +++ b/lib/tun-metadata.c @@ -32,8 +32,8 @@ struct tun_meta_entry { struct hmap_node node; /* In struct tun_table's key_hmap. */ - uint32_t key; /* (class << 8) | type. */ struct tun_metadata_loc loc; + uint32_t key; /* (class << 8) | type. */ bool valid; /* True if allocated to a class and type. */ };