Commit e69a7ff8 authored by Heiko Carstens's avatar Heiko Carstens
Browse files

s390: allow to compile with z16 optimizations 



Add config and compile options which allow to compile with z16
optimizations if the compiler supports it.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 6203ac30

arch/s390/Kconfig

+19 −0
Original line number Diff line number Diff line
@@ -255,6 +255,10 @@ config HAVE_MARCH_Z15_FEATURES 
	def_bool n

	select HAVE_MARCH_Z14_FEATURES



config HAVE_MARCH_Z16_FEATURES

	def_bool n

	select HAVE_MARCH_Z15_FEATURES



choice

	prompt "Processor type"

	default MARCH_Z196
@@ -312,6 +316,14 @@ config MARCH_Z15 
	  and 8561 series). The kernel will be slightly faster but will not

	  work on older machines.



config MARCH_Z16

	bool "IBM z16"

	select HAVE_MARCH_Z16_FEATURES

	depends on $(cc-option,-march=z16)

	help

	  Select this to enable optimizations for IBM z16 (3931 and

	  3932 series).



endchoice



config MARCH_Z10_TUNE
@@ -332,6 +344,9 @@ config MARCH_Z14_TUNE 
config MARCH_Z15_TUNE

	def_bool TUNE_Z15 || MARCH_Z15 && TUNE_DEFAULT



config MARCH_Z16_TUNE

	def_bool TUNE_Z16 || MARCH_Z16 && TUNE_DEFAULT



choice

	prompt "Tune code generation"

	default TUNE_DEFAULT
@@ -372,6 +387,10 @@ config TUNE_Z15 
	bool "IBM z15"

	depends on $(cc-option,-mtune=z15)



config TUNE_Z16

	bool "IBM z16"

	depends on $(cc-option,-mtune=z16)



endchoice



config 64BIT

arch/s390/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 
mflags-$(CONFIG_MARCH_Z13)    := -march=z13

mflags-$(CONFIG_MARCH_Z14)    := -march=z14

mflags-$(CONFIG_MARCH_Z15)    := -march=z15

mflags-$(CONFIG_MARCH_Z16)    := -march=z16



export CC_FLAGS_MARCH := $(mflags-y)
@@ -54,6 +55,7 @@ cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 
cflags-$(CONFIG_MARCH_Z13_TUNE)		+= -mtune=z13

cflags-$(CONFIG_MARCH_Z14_TUNE)		+= -mtune=z14

cflags-$(CONFIG_MARCH_Z15_TUNE)		+= -mtune=z15

cflags-$(CONFIG_MARCH_Z16_TUNE)		+= -mtune=z16



cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include