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authorDavid S. Miller <davem@sunset.davemloft.net>2006-03-08 16:09:19 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:14:24 -0800
commit8935dced547afbf37d0fcfcac9a3556494e53104 (patch)
tree0ae802875c73e99b86e4f90be6e953ec0c528dea /arch/sparc64/Kconfig
parent17b0e199a10184d8c5bbbd79a4cee993bb1fb257 (diff)
[SPARC64]: Add SMT scheduling support for Niagara.
The mapping is a simple "(cpuid >> 2) == core" for now. Later we'll add more sophisticated code that will walk the sun4v machine description and figure this out from there. We should also add core mappings for jaguar and panther processors. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/Kconfig')
-rw-r--r--arch/sparc64/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index a253a39c3ff..49b652f9b1d 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -356,6 +356,15 @@ config SOLARIS_EMUL
endmenu
+config SCHED_SMT
+ bool "SMT (Hyperthreading) scheduler support"
+ depends on SMP
+ default y
+ help
+ SMT scheduler support improves the CPU scheduler's decision making
+ when dealing with UltraSPARC cpus at a cost of slightly increased
+ overhead in some places. If unsure say N here.
+
config CMDLINE_BOOL
bool "Default bootloader kernel arguments"