[PATCH] i386: Fix usage of -mtune when X86_GENERIC=y or CONFIG_MCORE2=y

Hi!

I sent this simple patch to lkml about two weeks ago and also cc'ed
to Linus, but seems that the patch got ignored. I decided to write to
you, because you have modified the relevant file most recently.

Below is a copy of the mail that is also available at
<http://lkml.org/lkml/2007/2/28/230>.

Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/arch/i386/Makefile.cpu b/arch/i386/Makefile.cpu
index e0ada4e..e372b58 100644 (file)
--- a/arch/i386/Makefile.cpu
+++ b/arch/i386/Makefile.cpu
@@ -4,9 +4,9 @@
 #-mtune exists since gcc 3.4
 HAS_MTUNE      := $(call cc-option-yn, -mtune=i386)
 ifeq ($(HAS_MTUNE),y)
-tune           = $(call cc-option,-mtune=$(1),)
+tune           = $(call cc-option,-mtune=$(1),$(2))
 else
-tune           = $(call cc-option,-mcpu=$(1),)
+tune           = $(call cc-option,-mcpu=$(1),$(2))
 endif
 
 align := $(cc-option-align)
@@ -33,7 +33,7 @@ cflags-$(CONFIG_MWINCHIP3D)   += $(call cc-option,-march=winchip2,-march=i586)
 cflags-$(CONFIG_MCYRIXIII)     += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
 cflags-$(CONFIG_MVIAC3_2)      += $(call cc-option,-march=c3-2,-march=i686)
 cflags-$(CONFIG_MVIAC7)                += -march=i686
-cflags-$(CONFIG_MCORE2)                += -march=i686 $(call cc-option,-mtune=core2,$(call cc-option,-mtune=generic,-mtune=i686))
+cflags-$(CONFIG_MCORE2)                += -march=i686 $(call tune,core2)
 
 # AMD Elan support
 cflags-$(CONFIG_X86_ELAN)      += -march=i486
@@ -43,5 +43,5 @@ cflags-$(CONFIG_MGEODEGX1)    += -march=pentium-mmx
 
 # add at the end to overwrite eventual tuning options from earlier
 # cpu entries
-cflags-$(CONFIG_X86_GENERIC)   += $(call tune,generic)
+cflags-$(CONFIG_X86_GENERIC)   += $(call tune,generic,$(call tune,i686))