Merge branch 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

[net-next-2.6.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 21ac83070a805030150bab1a229be48c3f79485a..7b2a8ca97ada66b90c786c69bd44dc71b84c492c 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -461,6 +461,15 @@ config DEBUG_MUTEXES
         This feature allows mutex semantics violations to be detected and
         reported.
 
+config BKL
+       bool "Big Kernel Lock" if (SMP || PREEMPT)
+       default y
+       help
+         This is the traditional lock that is used in old code instead
+         of proper locking. All drivers that use the BKL should depend
+         on this symbol.
+         Say Y here unless you are working on removing the BKL.
+
 config DEBUG_LOCK_ALLOC
        bool "Lock debugging: detect incorrect freeing of live locks"
        depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT