diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 6cdcf38f2da..6b0c2d8a212 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -300,7 +300,7 @@ config DEBUG_OBJECTS_ENABLE_DEFAULT config DEBUG_SLAB bool "Debug slab memory allocations" - depends on DEBUG_KERNEL && SLAB + depends on DEBUG_KERNEL && SLAB && !KMEMCHECK help Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed @@ -312,7 +312,7 @@ config DEBUG_SLAB_LEAK config SLUB_DEBUG_ON bool "SLUB debugging on by default" - depends on SLUB && SLUB_DEBUG + depends on SLUB && SLUB_DEBUG && !KMEMCHECK default n help Boot with debugging on by default. SLUB boots by default with @@ -336,6 +336,38 @@ 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_KMEMLEAK_TEST + tristate "Simple test for the kernel memory leak detector" + depends on DEBUG_KMEMLEAK + help + Say Y or M here to build a test for the kernel memory leak + detector. This option enables a module that explicitly leaks + memory. + + If unsure, say N. + config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPT && (TRACE_IRQFLAGS_SUPPORT || PPC64) @@ -964,3 +996,5 @@ config DMA_API_DEBUG source "samples/Kconfig" source "lib/Kconfig.kgdb" + +source "lib/Kconfig.kmemcheck" |