提交 7a9bdd88 编写于 作者: S Suresh Siddha 提交者: Tony Luck

[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: NSuresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
上级 ac09f698
...@@ -261,6 +261,15 @@ config HOTPLUG_CPU ...@@ -261,6 +261,15 @@ config HOTPLUG_CPU
can be controlled through /sys/devices/system/cpu/cpu#. can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug. 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 config PREEMPT
bool "Preemptible Kernel" bool "Preemptible Kernel"
help help
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