| From 858c304c5783274a4b8455c7c3af2cc82dc854c0 Mon Sep 17 00:00:00 2001 |
| From: Ingo Molnar <mingo@elte.hu> |
| Date: Fri, 3 Jul 2009 08:30:30 -0500 |
| Subject: [PATCH] RCU: Force PREEMPT_RCU for PREEMPT-RT |
| |
| commit b526aded4c39a83d7042b9b16dee342e1f600795 in tip. |
| |
| PREEMPT_RT relies on PREEMPT_RCU - only allow RCU to be configured |
| interactively in the !PREEMPT_RT case. |
| |
| [PG: add TINY_RCU to blacklist] |
| |
| Signed-off-by: Ingo Molnar <mingo@elte.hu> |
| Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/init/Kconfig b/init/Kconfig |
| index d95ca7c..9a50980 100644 |
| --- a/init/Kconfig |
| +++ b/init/Kconfig |
| @@ -328,6 +328,7 @@ choice |
| |
| config TREE_RCU |
| bool "Tree-based hierarchical RCU" |
| + depends on !PREEMPT_RT |
| help |
| This option selects the RCU implementation that is |
| designed for very large SMP system with hundreds or |
| @@ -346,7 +347,7 @@ config TREE_PREEMPT_RCU |
| |
| config TINY_RCU |
| bool "UP-only small-memory-footprint RCU" |
| - depends on !SMP |
| + depends on !SMP && !PREEMPT_RT |
| help |
| This option selects the RCU implementation that is |
| designed for UP systems from which real-time response |
| -- |
| 1.7.1.1 |
| |
