23 files changed, 12 insertions, 90 deletions

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 4a0e54fc01b2..68fcbb2d59e2 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -34,6 +34,7 @@ config ARC
         select OF
         select OF_EARLY_FLATTREE
         select PERF_USE_VMALLOC
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config SCHED_OMIT_FRAME_POINTER
         def_bool y
diff --git a/arch/arc/Kconfig.debug b/arch/arc/Kconfig.debug
index 962c6099659e..a7fc0da25650 100644
--- a/arch/arc/Kconfig.debug
+++ b/arch/arc/Kconfig.debug
@@ -15,13 +15,6 @@ config EARLY_PRINTK
           with klogd/syslogd or the X server. You should normally N here,
           unless you want to debug such a crash.
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit.
-
 config 16KSTACKS
         bool "Use 16Kb for kernel stacks instead of 8Kb"
         help
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index b573827d0416..08c7ac650405 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -41,6 +41,7 @@ config BLACKFIN
         select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS
         select HAVE_MOD_ARCH_SPECIFIC
         select MODULES_USE_ELF_RELA
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config GENERIC_CSUM
         def_bool y
diff --git a/arch/blackfin/Kconfig.debug b/arch/blackfin/Kconfig.debug
index 79594694ee90..f3337ee03621 100644
--- a/arch/blackfin/Kconfig.debug
+++ b/arch/blackfin/Kconfig.debug
@@ -2,13 +2,6 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit.
-
 config DEBUG_VERBOSE
         bool "Verbose fault messages"
         default y
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index 2ce731f9aa4d..4b6628ea381e 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -14,6 +14,7 @@ config FRV
         select ARCH_WANT_IPC_PARSE_VERSION
         select OLD_SIGSUSPEND3
         select OLD_SIGACTION
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config ZONE_DMA
         bool
diff --git a/arch/frv/Kconfig.debug b/arch/frv/Kconfig.debug
index 211f01bc4caa..98c99a3ed2be 100644
--- a/arch/frv/Kconfig.debug
+++ b/arch/frv/Kconfig.debug
@@ -2,10 +2,6 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-
 config GDBSTUB
         bool "Remote GDB kernel debugging"
         depends on DEBUG_KERNEL
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index bcd17b206571..29a7ef4e448b 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -16,6 +16,7 @@ config M32R
         select GENERIC_ATOMIC64
         select ARCH_USES_GETTIMEOFFSET
         select MODULES_USE_ELF_RELA
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config SBUS
         bool
diff --git a/arch/m32r/Kconfig.debug b/arch/m32r/Kconfig.debug
index bb1afc1a31cc..6c612b7691b0 100644
--- a/arch/m32r/Kconfig.debug
+++ b/arch/m32r/Kconfig.debug
@@ -2,13 +2,6 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit.
-
 config DEBUG_PAGEALLOC
         bool "Debug page memory allocations"
         depends on DEBUG_KERNEL && BROKEN
diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig
index dcd94406030e..cfd831c29824 100644
--- a/arch/metag/Kconfig
+++ b/arch/metag/Kconfig
@@ -30,6 +30,7 @@ config METAG
         select OF
         select OF_EARLY_FLATTREE
         select SPARSE_IRQ
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config STACKTRACE_SUPPORT
         def_bool y
diff --git a/arch/metag/Kconfig.debug b/arch/metag/Kconfig.debug
index e45bbf6a7a5d..cb5c92860540 100644
--- a/arch/metag/Kconfig.debug
+++ b/arch/metag/Kconfig.debug
@@ -6,13 +6,6 @@ config TRACE_IRQFLAGS_SUPPORT
 
 source "lib/Kconfig.debug"
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit.
-
 config 4KSTACKS
         bool "Use 4Kb for kernel stacks instead of 8Kb"
         depends on DEBUG_KERNEL
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e433b90507fb..beeff436b22f 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -42,6 +42,7 @@ config MIPS
         select MODULES_USE_ELF_REL if MODULES
         select MODULES_USE_ELF_RELA if MODULES && 64BIT
         select CLONE_BACKWARDS
+        select HAVE_DEBUG_STACKOVERFLOW
 
 menu "Machine selection"
 
diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug
index 5a43aa0798ca..37871f0de15e 100644
--- a/arch/mips/Kconfig.debug
+++ b/arch/mips/Kconfig.debug
@@ -67,15 +67,6 @@ config CMDLINE_OVERRIDE
 
           Normally, you will choose 'N' here.
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit(2GB on MIPS). The debugging option
-          provides another way to check stack overflow happened on kernel mode
-          stack usually caused by nested interruption.
-
 config SMTC_IDLE_HOOK_DEBUG
         bool "Enable additional debug checks before going into CPU idle loop"
         depends on DEBUG_KERNEL && MIPS_MT_SMTC
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index 428da175d073..70e4f663ebd2 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -13,6 +13,7 @@ config MN10300
         select MODULES_USE_ELF_RELA
         select OLD_SIGSUSPEND3
         select OLD_SIGACTION
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config AM33_2
         def_bool n
diff --git a/arch/mn10300/Kconfig.debug b/arch/mn10300/Kconfig.debug
index bdbfd444a9ff..94efb3ed223f 100644
--- a/arch/mn10300/Kconfig.debug
+++ b/arch/mn10300/Kconfig.debug
@@ -2,10 +2,6 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-
 config DEBUG_DECOMPRESS_KERNEL
         bool "Using serial port during decompressing kernel"
         depends on DEBUG_KERNEL
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 1072bfd18c50..99dbab1c59ac 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -22,6 +22,7 @@ config OPENRISC
         select GENERIC_STRNCPY_FROM_USER
         select GENERIC_STRNLEN_USER
         select MODULES_USE_ELF_RELA
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config MMU
         def_bool y
@@ -128,16 +129,6 @@ config CMDLINE
 
 menu "Debugging options"
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for kernel stack overflow"
-        default y
-        help
-          Make extra checks for space available on stack in some
-          critical functions. This will cause kernel to run a bit slower,
-          but will catch most of kernel stack overruns and exit gracefully.
-
-          Say Y if you are unsure.
-
 config JUMP_UPON_UNHANDLED_EXCEPTION
         bool "Try to die gracefully"
         default y
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 2a2aea5aae5b..aa399a5259b6 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -27,6 +27,7 @@ config PARISC
         select MODULES_USE_ELF_RELA
         select CLONE_BACKWARDS
         select TTY # Needed for pdc_cons.c
+        select HAVE_DEBUG_STACKOVERFLOW
 
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/parisc/Kconfig.debug b/arch/parisc/Kconfig.debug
index 08a332f6ee87..bc989e522a04 100644
--- a/arch/parisc/Kconfig.debug
+++ b/arch/parisc/Kconfig.debug
@@ -13,14 +13,3 @@ config DEBUG_RODATA
          If in doubt, say "N".
 
 endmenu
-
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        default y
-        depends on DEBUG_KERNEL
-        ---help---
-          Say Y here if you want to check the overflows of kernel, IRQ
-          and exception stacks. This option will cause messages of the
-          stacks in detail when free stack space drops below a certain
-          limit.
-          If in doubt, say "N".
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 1022e7b675c2..bc3a0ebf16a7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -138,6 +138,7 @@ config PPC
         select ARCH_USE_BUILTIN_BSWAP
         select OLD_SIGSUSPEND
         select OLD_SIGACTION if PPC32
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config EARLY_PRINTK
         bool
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index d86875f3e17e..21c9f304e96c 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -28,13 +28,6 @@ config PRINT_STACK_DEPTH
           too small and stack traces cause important information to
           scroll off the screen.
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit.
-
 config HCALL_STATS
         bool "Hypervisor call instrumentation"
         depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 3aa37669ff8c..24565a7ffe6d 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -25,6 +25,7 @@ config TILE
         select HAVE_ARCH_TRACEHOOK
         select HAVE_SYSCALL_TRACEPOINTS
         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+        select HAVE_DEBUG_STACKOVERFLOW
 
 # FIXME: investigate whether we need/want these options.
 #       select HAVE_IOREMAP_PROT
diff --git a/arch/tile/Kconfig.debug b/arch/tile/Kconfig.debug
index ddbfc3322d7f..9165ea979e85 100644
--- a/arch/tile/Kconfig.debug
+++ b/arch/tile/Kconfig.debug
@@ -14,13 +14,6 @@ config EARLY_PRINTK
           with klogd/syslogd. You should normally N here,
           unless you want to debug such a crash.
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        help
-          This option will cause messages to be printed if free stack space
-          drops below a certain limit.
-
 config DEBUG_EXTRA_FLAGS
         string "Additional compiler arguments when building with '-g'"
         depends on DEBUG_INFO
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2775023a0744..265c672a2f40 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -122,6 +122,7 @@ config X86
         select OLD_SIGACTION if X86_32
         select COMPAT_OLD_SIGACTION if IA32_EMULATION
         select RTC_LIB
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config INSTRUCTION_DECODER
         def_bool y
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index c963881de0d0..78d91afb8e50 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -59,16 +59,6 @@ config EARLY_PRINTK_DBGP
           with klogd/syslogd or the X server. You should normally N here,
           unless you want to debug such a crash. You need usb debug device.
 
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        depends on DEBUG_KERNEL
-        ---help---
-          Say Y here if you want to check the overflows of kernel, IRQ
-          and exception stacks. This option will cause messages of the
-          stacks in detail when free stack space drops below a certain
-          limit.
-          If in doubt, say "N".
-
 config X86_PTDUMP
         bool "Export kernel pagetable layout to userspace via debugfs"
         depends on DEBUG_KERNEL