From 7a9bdd8842d0847f3b15068550a3632a2d259057 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 5 Apr 2005 18:05:00 -0700 Subject: [PATCH] [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 Signed-off-by: Tony Luck --- arch/ia64/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 468dbe8a6b9..cad8346def1 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 -- 2.20.1