[PATCH] lockdep: stacktrace subsystem, core

Framework to generate and save stacktraces quickly, without printing anything
to the console.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 7b3863d4f5e8..04e374c6fd46 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -107,7 +107,7 @@ config DEBUG_SLAB_LEAK
 
 config DEBUG_PREEMPT
         bool "Debug preemptible kernel"
-        depends on DEBUG_KERNEL && PREEMPT
+        depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT
         default y
         help
           If you say Y here then the kernel will use a debug variant of the
@@ -149,6 +149,10 @@ config DEBUG_SPINLOCK_SLEEP
           If you say Y here, various routines which may sleep will become very
           noisy if they are called with a spinlock held.
 
+config STACKTRACE
+        bool
+        depends on STACKTRACE_SUPPORT
+
 config DEBUG_KOBJECT
         bool "kobject debugging"
         depends on DEBUG_KERNEL