Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932287AbWE3OHq (ORCPT ); Tue, 30 May 2006 10:07:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932284AbWE3OHp (ORCPT ); Tue, 30 May 2006 10:07:45 -0400 Received: from cam-admin0.cambridge.arm.com ([193.131.176.58]:6551 "EHLO cam-admin0.cambridge.arm.com") by vger.kernel.org with ESMTP id S932287AbWE3OHh (ORCPT ); Tue, 30 May 2006 10:07:37 -0400 From: Catalin Marinas Reply-To: catalin.marinas@gmail.com Subject: [PATCH 2.6.17-rc5 7/7] Simple testing for kmemleak Date: Tue, 30 May 2006 15:07:35 +0100 To: linux-kernel@vger.kernel.org Message-Id: <20060530140735.21491.15343.stgit@localhost.localdomain> In-Reply-To: <20060530135016.21491.34817.stgit@localhost.localdomain> References: <20060530135016.21491.34817.stgit@localhost.localdomain> Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit User-Agent: StGIT/0.9 X-OriginalArrivalTime: 30 May 2006 14:07:35.0914 (UTC) FILETIME=[66F2A4A0:01C683F2] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3314 Lines: 107 From: Catalin Marinas This patch only contains some very simple testing at the moment. Proper testing will be needed. Signed-off-by: Catalin Marinas --- lib/Kconfig.debug | 9 +++++++++ mm/Makefile | 1 + mm/memleak-test.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 64 insertions(+), 0 deletions(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 821565a..d0404e2 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -122,6 +122,15 @@ config DEBUG_MEMLEAK_PREINIT_POINTERS buffer will be freed once the system initialization is completed. +config DEBUG_MEMLEAK_TEST + tristate "Test the kernel memory leak detector" + default n + depends on DEBUG_MEMLEAK + help + Say Y here to build the test harness for the kernel memory + leak detector. At the moment, this option enables a module + that explicitly leaks memory. + config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPT diff --git a/mm/Makefile b/mm/Makefile index d487d96..aef1bd8 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -24,3 +24,4 @@ obj-$(CONFIG_MEMORY_HOTPLUG) += memory_h obj-$(CONFIG_FS_XIP) += filemap_xip.o obj-$(CONFIG_MIGRATION) += migrate.o obj-$(CONFIG_DEBUG_MEMLEAK) += memleak.o +obj-$(CONFIG_DEBUG_MEMLEAK_TEST) += memleak-test.o diff --git a/mm/memleak-test.c b/mm/memleak-test.c new file mode 100644 index 0000000..15ddd36 --- /dev/null +++ b/mm/memleak-test.c @@ -0,0 +1,54 @@ +/* + * mm/memleak-test.c + * + * Copyright (C) 2006 ARM Limited + * Written by Catalin Marinas + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include + +#include + +/* Some very simple testing. This function needs to be extended for + * proper testing */ +static int __init memleak_test_init(void) +{ + printk(KERN_INFO "KMemLeak testing\n"); + + /* make some orphan pointers */ + kmalloc(32, GFP_KERNEL); + kmalloc(32, GFP_KERNEL); +#ifndef CONFIG_MODULES + kmem_cache_alloc(files_cachep, GFP_KERNEL); + kmem_cache_alloc(files_cachep, GFP_KERNEL); +#endif + vmalloc(64); + vmalloc(64); + + return 0; +} +module_init(memleak_test_init); + +static void __exit memleak_test_exit(void) +{ +} +module_exit(memleak_test_exit); + +MODULE_LICENSE("GPL"); - 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/