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Commit 3bba00d7 authored by Catalin Marinas's avatar Catalin Marinas
Browse files

kmemleak: Enable the building of the memory leak detector 



This patch adds the Kconfig.debug and Makefile entries needed for
building kmemleak into the kernel.

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 2e1483c9

lib/Kconfig.debug

+22 −0
Original line number Diff line number Diff line
@@ -336,6 +336,28 @@ config SLUB_STATS 
	  out which slabs are relevant to a particular load.

	  Try running: slabinfo -DA



config DEBUG_KMEMLEAK

	bool "Kernel memory leak detector"

	depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM) && \

		!MEMORY_HOTPLUG

	select DEBUG_SLAB if SLAB

	select SLUB_DEBUG if SLUB

	select DEBUG_FS if SYSFS

	select STACKTRACE if STACKTRACE_SUPPORT

	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/kmemleak. Enabling this

	  feature will introduce an overhead to memory

	  allocations. See Documentation/kmemleak.txt for more

	  details.



	  In order to access the kmemleak 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)

mm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -38,3 +38,4 @@ obj-$(CONFIG_SMP) += allocpercpu.o 
endif

obj-$(CONFIG_QUICKLIST) += quicklist.o

obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o page_cgroup.o

obj-$(CONFIG_DEBUG_KMEMLEAK) += kmemleak.o