From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755943AbYKTLdV (ORCPT ); Thu, 20 Nov 2008 06:33:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755422AbYKTLbR (ORCPT ); Thu, 20 Nov 2008 06:31:17 -0500 Received: from cam-admin0.cambridge.arm.com ([193.131.176.58]:47391 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755417AbYKTLbQ (ORCPT ); Thu, 20 Nov 2008 06:31:16 -0500 Subject: [PATCH 2.6.28-rc5 08/11] kmemleak: Enable the building of the memory leak detector To: linux-kernel@vger.kernel.org From: Catalin Marinas Date: Thu, 20 Nov 2008 11:31:13 +0000 Message-ID: <20081120113113.16607.59694.stgit@pc1117.cambridge.arm.com> In-Reply-To: <20081120112903.16607.68902.stgit@pc1117.cambridge.arm.com> References: <20081120112903.16607.68902.stgit@pc1117.cambridge.arm.com> User-Agent: StGit/0.14.3.286.g8983 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 20 Nov 2008 11:31:13.0696 (UTC) FILETIME=[7E8D8A00:01C94B03] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the Kconfig.debug and Makefile entries needed for building kmemleak into the kernel. Signed-off-by: Catalin Marinas --- lib/Kconfig.debug | 23 +++++++++++++++++++++++ mm/Makefile | 1 + 2 files changed, 24 insertions(+), 0 deletions(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index b0f239e..1e59827 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -290,6 +290,29 @@ config SLUB_STATS out which slabs are relevant to a particular load. Try running: slabinfo -DA +config DEBUG_MEMLEAK + bool "Kernel memory leak detector" + default n + depends on EXPERIMENTAL + select DEBUG_SLAB if SLAB + select SLUB_DEBUG if SLUB + select DEBUG_FS + select STACKTRACE + select FRAME_POINTER + select KALLSYMS + help + Say Y here if you want to enable the memory leak + detector. The memory allocation/freeing is traced in a way + similar to the Boehm's conservative garbage collector, the + difference being that the orphan objects are not freed but + only shown in /sys/kernel/debug/memleak. Enabling this + feature will introduce an overhead to memory + allocations. See Documentation/kmemleak.txt for more + details. + + In order to access the memleak file, debugfs needs to be + mounted (usually at /sys/kernel/debug). + config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPT && (TRACE_IRQFLAGS_SUPPORT || PPC64) diff --git a/mm/Makefile b/mm/Makefile index c06b45a..3e43536 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -34,3 +34,4 @@ obj-$(CONFIG_MIGRATION) += migrate.o obj-$(CONFIG_SMP) += allocpercpu.o obj-$(CONFIG_QUICKLIST) += quicklist.o obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o page_cgroup.o +obj-$(CONFIG_DEBUG_MEMLEAK) += memleak.o