"Tree RCU": scalable classic RCU implementation

[linux-2.6-block.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index 226da2733c1e7f8a885d8db735f11605136fa103..9dd7958a71f0d101e67e56170ed991e8ee6a171b 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -354,7 +354,7 @@ config RT_GROUP_SCHED
          setting below. If enabled, it will also make it impossible to
          schedule realtime tasks for non-root users until you allocate
          realtime bandwidth for them.
-         See Documentation/sched-rt-group.txt for more information.
+         See Documentation/scheduler/sched-rt-group.txt for more information.
 
 choice
        depends on GROUP_SCHED
@@ -928,10 +928,16 @@ source "block/Kconfig"
 config PREEMPT_NOTIFIERS
        bool
 
-config CLASSIC_RCU
-       def_bool !PREEMPT_RCU
+config TREE_RCU_TRACE
+       def_bool RCU_TRACE && TREE_RCU
+       select DEBUG_FS
        help
-         This option selects the classic RCU implementation that is
-         designed for best read-side performance on non-realtime
-         systems.  Classic RCU is the default.  Note that the
-         PREEMPT_RCU symbol is used to select/deselect this option.
+         This option provides tracing for the TREE_RCU implementation,
+         permitting Makefile to trivially select kernel/rcutree_trace.c.
+
+config PREEMPT_RCU_TRACE
+       def_bool RCU_TRACE && PREEMPT_RCU
+       select DEBUG_FS
+       help
+         This option provides tracing for the PREEMPT_RCU implementation,
+         permitting Makefile to trivially select kernel/rcupreempt_trace.c.