1 files changed, 40 insertions, 7 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c6e854f215fa..23067ab1a73c 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)
@@ -440,7 +472,7 @@ config LOCKDEP
         bool
         depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
         select STACKTRACE
-        select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND
+        select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390
         select KALLSYMS
         select KALLSYMS_ALL
 
@@ -620,7 +652,7 @@ config ARCH_WANT_FRAME_POINTERS
 config FRAME_POINTER
         bool "Compile the kernel with frame pointers"
         depends on DEBUG_KERNEL && \
-                (CRIS || M68K || M68KNOMMU || FRV || UML || S390 || \
+                (CRIS || M68K || M68KNOMMU || FRV || UML || \
                  AVR32 || SUPERH || BLACKFIN || MN10300) || \
                 ARCH_WANT_FRAME_POINTERS
         default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
@@ -809,13 +841,13 @@ config FAULT_INJECTION_STACKTRACE_FILTER
         depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
         depends on !X86_64
         select STACKTRACE
-        select FRAME_POINTER if !PPC
+        select FRAME_POINTER if !PPC && !S390
         help
           Provide stacktrace filter for fault-injection capabilities
 
 config LATENCYTOP
         bool "Latency measuring infrastructure"
-        select FRAME_POINTER if !MIPS && !PPC
+        select FRAME_POINTER if !MIPS && !PPC && !S390
         select KALLSYMS
         select KALLSYMS_ALL
         select STACKTRACE
@@ -891,7 +923,6 @@ config DYNAMIC_DEBUG
         default n
         depends on PRINTK
         depends on DEBUG_FS
-        select PRINTK_DEBUG
         help
 
           Compiles debug level messages into the kernel, which would not
@@ -965,3 +996,5 @@ config DMA_API_DEBUG
 source "samples/Kconfig"
 
 source "lib/Kconfig.kgdb"
+
+source "lib/Kconfig.kmemcheck"