[PATCH] more SPIN_LOCK_UNLOCKED -> DEFINE_SPINLOCK conversions

[pandora-kernel.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0c42129..3754c9a 100644 (file)
--- 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
@@ -141,7 +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