Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934309AbcCIWOf (ORCPT ); Wed, 9 Mar 2016 17:14:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58461 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751476AbcCIWO0 (ORCPT ); Wed, 9 Mar 2016 17:14:26 -0500 From: Jessica Yu To: Josh Poimboeuf , Seth Jennings , Jiri Kosina , Vojtech Pavlik , Miroslav Benes , Petr Mladek , Rusty Russell Cc: Steven Rostedt , live-patching@vger.kernel.org, linux-kernel@vger.kernel.org, Jessica Yu Subject: [PATCH 0/3] Livepatch module notifier cleanup Date: Wed, 9 Mar 2016 17:13:54 -0500 Message-Id: <1457561637-24770-1-git-send-email-jeyu@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1436 Lines: 32 These are the remaining 3 patches that came from the original ftrace/livepatch module notifier patchset found here: https://lkml.org/lkml/2016/2/8/1180 Basically, the patchset does a bit of module.c cleanup (patch 1 and 2) in preparation for the klp_module_{coming,going} calls (patch 3). We decided to stop relying on the module notifier callchain in favor of hard-coding the appropriate livepatch function calls that handle coming and going modules. Hard-coding these calls will guarantee that ftrace and livepatch exit/initialization routines are called in the correct order without relying on module notifiers. The patches should be nearly exactly the same as those from the previous discussion, except in patch 3 I've added back the #if IS_ENABLED(CONFIG_LIVEPATCH) guard in livepatch.h, and in patch 2 I decided that it might be safer to change mod->state with the module mutex held. Patches based on linux-next. Previous discussion found here: https://lkml.org/lkml/2016/2/8/1180 Jessica Yu (3): modules: split part of complete_formation() into prepare_coming_module() modules: set mod->state to GOING before going notifiers are called livepatch/module: remove livepatch module notifier include/linux/livepatch.h | 13 +++++ kernel/livepatch/core.c | 145 ++++++++++++++++++++++------------------------ kernel/module.c | 39 ++++++++++--- 3 files changed, 113 insertions(+), 84 deletions(-) -- 2.4.3