Commit bed08b7e authored by Michael Ellerman's avatar Michael Ellerman
Browse files

powerpc/cell: Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU 



The TUNE_CELL option allows you to build a kernel that runs on multiple
CPUs but is tuned (ie. optimised) to run on Cell CPUs. Now days no one
is building a distro in that fashion, and any users who are building
custom kernels for their Cell machines are better off building with
CONFIG_CELL_CPU, which builds a kernel that only runs on Cell and
therefore can be optimised even more aggresively.

Dropping the option also avoids confusing other users, who are presented
with an option to tune for Cell when they are not building for a Cell
CPU at all.

Suggested-by: default avatarThomas Huth <thuth@redhat.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 39fcfb91

arch/powerpc/Makefile

+0 −2
Original line number Diff line number Diff line
@@ -157,8 +157,6 @@ CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc) 
endif

endif



CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)



asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)



KBUILD_CPPFLAGS	+= -Iarch/$(ARCH) $(asinstr)

arch/powerpc/configs/cell_defconfig

+1 −1
Original line number Diff line number Diff line 
CONFIG_PPC64=y

CONFIG_TUNE_CELL=y

CONFIG_CELL_CPU=y

CONFIG_ALTIVEC=y

CONFIG_SMP=y

CONFIG_NR_CPUS=4

arch/powerpc/configs/ps3_defconfig

+1 −1
Original line number Diff line number Diff line 
CONFIG_PPC64=y

CONFIG_TUNE_CELL=y

CONFIG_CELL_CPU=y

CONFIG_ALTIVEC=y

CONFIG_SMP=y

CONFIG_NR_CPUS=2

arch/powerpc/platforms/Kconfig.cputype

+0 −11
Original line number Diff line number Diff line
@@ -147,17 +147,6 @@ config 6xx 
	depends on PPC32 && PPC_BOOK3S

	select PPC_HAVE_PMU_SUPPORT



config TUNE_CELL

	bool "Optimize for Cell Broadband Engine"

	depends on PPC64 && PPC_BOOK3S

	help

	  Cause the compiler to optimize for the PPE of the Cell Broadband

	  Engine. This will make the code run considerably faster on Cell

	  but somewhat slower on other machines. This option only changes

	  the scheduling of instructions, not the selection of instructions

	  itself, so the resulting kernel will keep running on all other

	  machines.



# this is temp to handle compat with arch=ppc

config 8xx

	bool

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