pseries: Fix endian issues in cpu hot-removal

[cascardo/linux.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 07c2832..a285900 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -892,6 +892,10 @@ config DEBUG_WW_MUTEX_SLOWPATH
         the full mutex checks enabled with (CONFIG_PROVE_LOCKING) this
         will test all possible w/w mutex interface abuse with the
         exception of simply not acquiring all the required locks.
+        Note that this feature can introduce significant overhead, so
+        it really should not be enabled in a production or distro kernel,
+        even a debug kernel.  If you are a driver writer, enable it.  If
+        you are a distro, do not.
 
 config DEBUG_LOCK_ALLOC
        bool "Lock debugging: detect incorrect freeing of live locks"
@@ -1032,8 +1036,13 @@ config TRACE_IRQFLAGS
          either tracing or lock debugging.
 
 config STACKTRACE
-       bool
+       bool "Stack backtrace support"
        depends on STACKTRACE_SUPPORT
+       help
+         This option causes the kernel to create a /proc/pid/stack for
+         every process, showing its current stack trace.
+         It is also used by various kernel debugging features that require
+         stack trace generation.
 
 config DEBUG_KOBJECT
        bool "kobject debugging"