diff options
| author | Andi Kleen <ak@suse.de> | 2006-03-25 16:29:06 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 09:10:52 -0800 |
| commit | dca99a38bccceda9e079d4c95abefbd9028605fe (patch) | |
| tree | 1b583ae41d7b042e0249bb0b746c49fa6f09a4e8 /arch | |
| parent | c7ea1a96ec007ba761c9d5d11d788cd8fdd5c8b6 (diff) | |
[PATCH] x86-64: Use -mtune=generic for generic kernels
The upcomming gcc 4.2 got a new option -mtune=generic to tune
code for both common AMD and Intel CPUs. Use this option
when available for generic kernels.
On x86-64 it is used with CONFIG_GENERIC_CPU. On i386 it is
enabled with CONFIG_X86_GENERIC. It won't affect the base
line CPU support in any ways and also not the minimum supported CPU.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/Makefile.cpu | 4 | ||||
| -rw-r--r-- | arch/x86_64/Makefile | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/i386/Makefile.cpu b/arch/i386/Makefile.cpu index dcd936ef45d..a11befba26d 100644 --- a/arch/i386/Makefile.cpu +++ b/arch/i386/Makefile.cpu @@ -39,3 +39,7 @@ cflags-$(CONFIG_X86_ELAN) += -march=i486 # Geode GX1 support cflags-$(CONFIG_MGEODEGX1) += -march=pentium-mmx +# add at the end to overwrite eventual tuning options from earlier +# cpu entries +cflags-$(CONFIG_X86_GENERIC) += $(call tune,generic) + diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index 7405dfd6522..f5e48ba9bec 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86_64/Makefile @@ -29,6 +29,7 @@ CHECKFLAGS += -D__x86_64__ -m64 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) +cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) CFLAGS += $(cflags-y) CFLAGS += -m64 |