"Tree RCU": scalable classic RCU implementation

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

diff --git a/init/Kconfig b/init/Kconfig
index f763762d544a135a0a06f67f36701b9f0d331140..9dd7958a71f0d101e67e56170ed991e8ee6a171b 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -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.