From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: linux-ia64@vger.kernel.org
Subject: [patch] turn on config_smt in defconfig
Date: Fri, 27 Jan 2006 02:09:48 +0000 [thread overview]
Message-ID: <200601270209.k0R29ng21629@unix-os.sc.intel.com> (raw)
Now that the scheduler domain degeneration patch from
Suresh Siddha was merged in the main line kernel for a
while, it is safe to turn on CONFIG_SMT broadly. It has
zero run time cost on system that doesn't have SMT because
the SD degenerator will collapse needless domains.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
cc: Suresh Siddha <suresh.b.siddha@intel.com>
--- ./arch/ia64/defconfig.orig 2006-01-26 18:40:54.579699555 -0800
+++ ./arch/ia64/defconfig 2006-01-26 18:46:31.865828235 -0800
@@ -100,7 +100,7 @@ CONFIG_FORCE_MAX_ZONEORDER\x18
CONFIG_SMP=y
CONFIG_NR_CPUSQ2
CONFIG_HOTPLUG_CPU=y
-# CONFIG_SCHED_SMT is not set
+CONFIG_SCHED_SMT=y
# CONFIG_PREEMPT is not set
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
--- ./arch/ia64/Kconfig.orig 2006-01-26 18:41:09.734972806 -0800
+++ ./arch/ia64/Kconfig 2006-01-26 18:43:35.204697587 -0800
@@ -266,7 +266,7 @@ config HOTPLUG_CPU
config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
- default off
+ default y
help
Improves the CPU scheduler's decision making when dealing with
Intel IA64 chips with MultiThreading at a cost of slightly increased
reply other threads:[~2006-01-27 2:09 UTC|newest]
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