From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933650AbcECPS3 (ORCPT ); Tue, 3 May 2016 11:18:29 -0400 Received: from Chamillionaire.breakpoint.cc ([80.244.247.6]:49813 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933156AbcECPSZ (ORCPT ); Tue, 3 May 2016 11:18:25 -0400 From: Florian Westphal To: Cc: linux-kernel@vger.kernel.org Subject: [PATCH net-next 0/5] net: remove trans_start from struct net_device Date: Tue, 3 May 2016 16:30:57 +0200 Message-Id: <1462285862-30946-1-git-send-email-fw@strlen.de> X-Mailer: git-send-email 2.7.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We currently have two instances for trans_start, once in net_device and once in netdev_queue. This series removes trans_start from net_device. Updates to dev->trans_start are replaced with updates to netdev queue 0. This series is compile-tested only. Replacement is done in 3 steps: 1. Replace read-accesses: x = dev->trans_start gets replaced by x = dev_trans_start(dev) 2. Replace write accesses: dev->trans_start = jiffies; gets replaced with new helper: netif_trans_update(dev); 3. This helper is then changed to set netdev_get_tx_queue(dev, 0)->trans_start instead of dev->trans_start. After this dev->trans_start can be removed. It should be noted that after this series several instances of netif_trans_update() are useless (if they occur in .ndo_start_xmit and driver doesn't set LLTX flag -- stack already did an update). Comments welcome.