Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2c190da4 authored by Jan Glauber's avatar Jan Glauber Committed by Martin Schwidefsky
Browse files

[S390] remove redundant stack check option 



Newer gcc versions offer an architecture-independent option to check
the stack size and warn if it reaches a certain limit. This option
already existed for s390 by using -mwarn-dynamicstack. Since one
stack check option is enough remove the s390 specific stack check
but keep the option that warns about dynamic stack usage because
that is not covered by the generic option.

Signed-off-by: default avatarJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 521cb40b

arch/s390/Kconfig

+5 −15
Original line number Diff line number Diff line
@@ -341,26 +341,16 @@ config STACK_GUARD 
	  The minimum size for the stack guard should be 256 for 31 bit and

	  512 for 64 bit.



config WARN_STACK

config WARN_DYNAMIC_STACK

	def_bool n

	prompt "Emit compiler warnings for function with broken stack usage"

	prompt "Emit compiler warnings for function with dynamic stack usage"

	help

	  This option enables the compiler options -mwarn-framesize and

	  -mwarn-dynamicstack. If the compiler supports these options it

	  will generate warnings for function which either use alloca or

	  create a stack frame bigger than CONFIG_WARN_STACK_SIZE.

	  This option enables the compiler option -mwarn-dynamicstack. If the

	  compiler supports this options generates warnings for functions

	  that dynamically allocate stack space using alloca.



	  Say N if you are unsure.



config WARN_STACK_SIZE

	int "Maximum frame size considered safe (128-2048)"

	range 128 2048

	depends on WARN_STACK

	default "2048"

	help

	  This allows you to specify the maximum frame size a function may

	  have without the compiler complaining about it.



config ARCH_POPULATES_NODE_MAP

	def_bool y

arch/s390/Makefile

+1 −2
Original line number Diff line number Diff line
@@ -80,8 +80,7 @@ endif 
endif



ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)

cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack

cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE)

cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack

endif



KBUILD_CFLAGS	+= -mbackchain -msoft-float $(cflags-y)