patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / arch / x86_64 / Kconfig

diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index e763749..1c07776 100644 (file)
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -239,7 +239,16 @@ config PREEMPT
          Say Y here if you are feeling brave and building a kernel for a 
          desktop, embedded or real-time system.  Say N if you are unsure. 
 
-# someone write a better help text please.
+config SCHED_SMT
+       bool "SMT (Hyperthreading) scheduler support"
+       depends on SMP
+       default off
+       help
+         SMT scheduler support improves the CPU scheduler's decision making
+         when dealing with Intel Pentium 4 chips with HyperThreading at a
+         cost of slightly increased overhead in some places. If unsure say
+         N here.
+
 config K8_NUMA
        bool "K8 NUMA support"
        depends on SMP
@@ -247,9 +256,9 @@ config K8_NUMA
          Enable NUMA (Non Unified Memory Architecture) support for
          AMD Opteron Multiprocessor systems. The kernel will try to allocate
          memory used by a CPU on the local memory controller of the CPU
-         and in the future do more optimizations. This may improve performance 
-         or it may not. Code is still experimental.
-         Say N if unsure.
+         and add some more NUMA awareness to the kernel.
+         This code is recommended on all multiprocessor Opteron systems
+         and normally doesn't hurt on others.
 
 config DISCONTIGMEM
        bool