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| author | Arnd Bergmann <arnd@arndb.de> | 2007-09-15 02:21:57 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-09-22 06:49:22 +0200 |
| commit | 3164cccdc0e6e16eb9797586aaa8d1f759799c01 (patch) | |
| tree | 5685db34bfa546cefcd1f6fc0cbbac8bd11945bb /arch/powerpc/Makefile | |
| parent | [POWERPC] cell: Don't cast the result of of_get_property() (diff) | |
| download | linux-3164cccdc0e6e16eb9797586aaa8d1f759799c01.tar.xz linux-3164cccdc0e6e16eb9797586aaa8d1f759799c01.zip | |
[POWERPC] add Kconfig option for optimizing for cell
Since the PPE on cell is an in-order core, it suffers significantly
from wrong instruction scheduling. This adds a Kconfig option that
enables passing -mtune=cell to gcc in order to generate object
code that runs well on cell.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 6015a92bc2a0..87aff5372d6e 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -92,6 +92,10 @@ else endif endif +ifeq ($(CONFIG_TUNE_CELL),y) + CFLAGS += $(call cc-option,-mtune=cell) +endif + # No AltiVec instruction when building kernel CFLAGS += $(call cc-option,-mno-altivec) |