X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2FKconfig.debug;h=3754c9a8f5c8e1e3fccebf2d0f282fd5eda6bcb4;hb=720a845911097cea1394fe7abb2c9efa76e32715;hp=426a0cf7b11c6ee539e94136e277171893f0b3a5;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 426a0cf7b1..3754c9a8f5 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -46,6 +46,25 @@ config LOG_BUF_SHIFT
 		     13 =>  8 KB
 		     12 =>  4 KB
 
+config DETECT_SOFTLOCKUP
+	bool "Detect Soft Lockups"
+	depends on DEBUG_KERNEL
+	default y
+	help
+	  Say Y here to enable the kernel to detect "soft lockups",
+	  which are bugs that cause the kernel to loop in kernel
+	  mode for more than 10 seconds, without giving other tasks a
+	  chance to run.
+
+	  When a soft-lockup is detected, the kernel will print the
+	  current stack trace (which you should report), but the
+	  system will stay locked up. This feature has negligible
+	  overhead.
+
+	  (Note that "hard lockups" are separate type of bugs that
+	   can be detected via the NMI-watchdog, on platforms that
+	   support it.)
+
 config SCHEDSTATS
 	bool "Collect scheduler statistics"
 	depends on DEBUG_KERNEL && PROC_FS
@@ -108,6 +127,7 @@ config DEBUG_HIGHMEM
 
 config DEBUG_BUGVERBOSE
 	bool "Verbose BUG() reporting (adds 70K)" if DEBUG_KERNEL && EMBEDDED
+	depends on BUG
 	depends on ARM || ARM26 || M32R || M68K || SPARC32 || SPARC64 || (X86 && !X86_64) || FRV
 	default !EMBEDDED
 	help
@@ -140,7 +160,7 @@ config DEBUG_IOREMAP
 
 config DEBUG_FS
 	bool "Debug Filesystem"
-	depends on DEBUG_KERNEL
+	depends on DEBUG_KERNEL && SYSFS
 	help
 	  debugfs is a virtual file system that kernel developers use to put
 	  debugging files into.  Enable this option to be able to read and
@@ -150,7 +170,8 @@ config DEBUG_FS
 
 config FRAME_POINTER
 	bool "Compile the kernel with frame pointers"
-	depends on DEBUG_KERNEL && ((X86 && !X86_64) || CRIS || M68K || M68KNOMMU || FRV)
+	depends on DEBUG_KERNEL && ((X86 && !X86_64) || CRIS || M68K || M68KNOMMU || FRV || UML)
+	default y if DEBUG_INFO && UML
 	help
 	  If you say Y here the resulting kernel image will be slightly larger
 	  and slower, but it will give very useful debugging information.