Module: xenomai-2.6
Branch: master
Commit: 0ea6d386ac43cc98a6f3f7851ff5e59ca574613b
URL:
http://git.xenomai.org/?p=xenomai-2.6.git;a=commit;h=0ea6d386ac43cc98a6f3f7851ff5e59ca574613b
Author: Gilles Chanteperdrix <gilles.chanteperd...@xenomai.org>
Date: Tue Feb 14 21:56:29 2012 +0100
arm: forcibly select unlocked context switches when SMP is enabled
---
ksrc/arch/arm/Kconfig | 13 +++++++++----
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/ksrc/arch/arm/Kconfig b/ksrc/arch/arm/Kconfig
index deee854..25ee469 100644
--- a/ksrc/arch/arm/Kconfig
+++ b/ksrc/arch/arm/Kconfig
@@ -18,8 +18,13 @@ depends on XENO_OPT_NUCLEUS
config IPIPE_WANT_PREEMPTIBLE_SWITCH
bool
- default y if (XENO_HW_UNLOCKED_SWITCH || SMP)
- default n if !XENO_HW_UNLOCKED_SWITCH && !SMP
+ default y if XENO_HW_UNLOCKED_SWITCH
+ default n if !XENO_HW_UNLOCKED_SWITCH
+
+config SELECT_HW_UNLOCKED_SWITCH_ON_SMP
+ bool
+ select XENO_HW_UNLOCKED_SWITCH
+ default y if SMP
config XENO_HW_FPU
bool "Enable FPU support"
@@ -42,8 +47,8 @@ config XENO_HW_UNLOCKED_SWITCH
and/or local interrupts may execute concurrently.
This option reduces interrupt latency when costly cache and
- TLB flushes are required to switch context, and may improve
- concurrency on some SMP/multi-core systems as well.
+ TLB flushes are required to switch context, and is mandatory
+ on SMP/multi-core systems.
You definitely want to enable that option on embedded ARM
platforms.
_______________________________________________
Xenomai-git mailing list
Xenomai-git@gna.org
https://mail.gna.org/listinfo/xenomai-git
