linux-kernel - [PATCH] AMD Geode LX optimizations

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Message-ID: <40101cc30910010811v5d15ff4cx9dd57c9cc9b4b045@mail.gmail.com>
Date:	Thu, 1 Oct 2009 17:11:10 +0200
From:	Matteo Croce <technoboy85@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] AMD Geode LX optimizations

Hi,
i found that we can optimize a bit the kernel for the AMD Geode LX.
I made this simple patch against a 2.6.31 kernel.
Tested, compiles and works fine.

Signed-off-by: Matteo Croce <technoboy85@...il.com>

--- a/arch/x86/Makefile_32.cpu	2009-09-10 21:16:53.198243207 +0200
+++ b/arch/x86/Makefile_32.cpu	2009-09-10 21:21:28.434245121 +0200
@@ -39,7 +39,7 @@

 # Geode GX1 support
 cflags-$(CONFIG_MGEODEGX1)	+= -march=pentium-mmx
-
+cflags-$(CONFIG_MGEODE_LX)	+= $(call cc-option,-march=geode,-march=pentium-mmx)
 # add at the end to overwrite eventual tuning options from earlier
 # cpu entries
 cflags-$(CONFIG_X86_GENERIC) 	+= $(call tune,generic,$(call tune,i686))
--- a/arch/x86/Kconfig.cpu	2009-10-01 16:51:56.567771217 +0200
+++ b/arch/x86/Kconfig.cpu	2009-10-01 16:52:25.936010648 +0200
@@ -397,7 +397,7 @@
 # generates cmov.
 config X86_CMOV
 	def_bool y
-	depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM ||
MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE ||
MEFFICEON || X86_64)
+	depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM ||
MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE ||
MEFFICEON || MGEODE_LX || X86_64)

 config X86_MINIMUM_CPU_FAMILY
 	int
--
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