idr: fix idr_pre_get() locking description

[linux.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 21ac83070a805030150bab1a229be48c3f79485a..69a32664c289692576677a48d5daacca69212752 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -353,7 +353,7 @@ config SLUB_DEBUG_ON
 config SLUB_STATS
        default n
        bool "Enable SLUB performance statistics"
-       depends on SLUB && SLUB_DEBUG && SYSFS
+       depends on SLUB && SYSFS
        help
          SLUB statistics are useful to debug SLUBs allocation behavior in
          order find ways to optimize the allocator. This should never be
@@ -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