From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759618AbXGOXhI (ORCPT ); Sun, 15 Jul 2007 19:37:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756287AbXGOXg4 (ORCPT ); Sun, 15 Jul 2007 19:36:56 -0400 Received: from tomts5-srv.bellnexxia.net ([209.226.175.25]:55162 "EHLO tomts5-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755973AbXGOXgx (ORCPT ); Sun, 15 Jul 2007 19:36:53 -0400 Date: Sun, 15 Jul 2007 19:36:51 -0400 From: Mathieu Desnoyers To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org Cc: hch@infradead.org Subject: [PATCH] Text Edit Lock - i386 kerneldoc implementation Message-ID: <20070715233651.GF22428@Krystal> References: <20070714012133.612727310@polymtl.ca> <20070714012412.380213021@polymtl.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <20070714012412.380213021@polymtl.ca> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.6.21.3-grsec (i686) X-Uptime: 19:35:57 up 8 days, 13:41, 3 users, load average: 0.74, 0.77, 0.46 User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Text Edit Lock - i386 kerneldoc implementation Add kerneldoc to text edit lock i386 API. Signed-off-by: Mathieu Desnoyers CC: hch@infradead.org --- arch/i386/mm/init.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) Index: linux-2.6-lttng/arch/i386/mm/init.c =================================================================== --- linux-2.6-lttng.orig/arch/i386/mm/init.c 2007-07-15 18:59:31.000000000 -0400 +++ linux-2.6-lttng/arch/i386/mm/init.c 2007-07-15 19:00:05.000000000 -0400 @@ -826,9 +826,13 @@ void mark_rodata_ro(void) global_flush_tlb(); } -/* - * Lock the kernel text for mutual write exclusion. - * Make sure the pages are writable. +/** + * kernel_text_mark_rw - Mark kernel text RW + * @address: location of the code + * @len: size of code to mark + * + * Mark the kernel text pages writable so they can safely written to. This is + * useful for code patching. */ void __kprobes kernel_text_mark_rw(unsigned long address, size_t len) { @@ -846,6 +850,13 @@ void __kprobes kernel_text_mark_rw(unsig } EXPORT_SYMBOL_GPL(kernel_text_mark_rw); +/** + * kernel_text_unmark - Mark kernel text back to its original flags + * @address: location of the code + * @len: size of code to mark + * + * Mark the kernel text back to its original flags. + */ void __kprobes kernel_text_unmark(unsigned long address, size_t len) { if (kernel_text_is_ro && address >= PFN_ALIGN(_text) -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68