|author||Suresh Siddha <firstname.lastname@example.org>||2005-04-05 18:05:00 -0700|
|committer||Tony Luck <email@example.com>||2005-05-03 10:33:28 -0700|
[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 <firstname.lastname@example.org> Signed-off-by: Tony Luck <email@example.com>
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 468dbe8a6b9c..cad8346def1d 100644
@@ -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.
+ bool "SMT scheduler support"
+ depends on SMP
+ default off
+ 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.
bool "Preemptible Kernel"