From 7a9bdd8842d0847f3b15068550a3632a2d259057 Mon Sep 17 00:00:00 2001
From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Tue, 5 Apr 2005 18:05:00 -0700
Subject: [IA64] Add config SCHED_SMT
Now that we have MC/MT detection patches in, appended patch allows us to
configure MT scheduler optimizations. For now, we will this option off
by default.
There is some discussion going on lkml about setting up sched-domains
which are absolutely needed (like for example, we shouldn't setup SMT domain
for non MT processors). Once that patch goes in, we can enable this option by
default.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
arch/ia64/Kconfig | 9 +++++++++
1 file changed, 9 insertions(+)
(limited to 'arch/ia64/Kconfig')
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 468dbe8a6b9c..cad8346def1d 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -261,6 +261,15 @@ config HOTPLUG_CPU
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
+config SCHED_SMT
+ bool "SMT scheduler support"
+ depends on SMP
+ default off
+ help
+ Improves the CPU scheduler's decision making when dealing with
+ Intel IA64 chips with MultiThreading at a cost of slightly increased
+ overhead in some places. If unsure say N here.
+
config PREEMPT
bool "Preemptible Kernel"
help
--
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