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[IA64] Add config SCHED_SMT

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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>
This commit is contained in:
Suresh Siddha 2005-04-05 18:05:00 -07:00 committed by Tony Luck
parent ac09f698f1
commit 7a9bdd8842
1 changed files with 9 additions and 0 deletions
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9
arch/ia64/Kconfig
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@ -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