Commit 695afd3d authored by Sedat Dilek's avatar Sedat Dilek Committed by Masahiro Yamada
Browse files

kbuild: Simplify DEBUG_INFO Kconfig handling 

While playing with [1] I saw that the handling
of CONFIG_DEBUG_INFO can be simplified.

[1] https://patchwork.kernel.org/patch/11716107/



Signed-off-by: default avatarSedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent d012a719

Makefile

+5 −1
Original line number Diff line number Diff line
@@ -816,13 +816,15 @@ endif 
DEBUG_CFLAGS	:= $(call cc-option, -fno-var-tracking-assignments)



ifdef CONFIG_DEBUG_INFO



ifdef CONFIG_DEBUG_INFO_SPLIT

DEBUG_CFLAGS	+= -gsplit-dwarf

else

DEBUG_CFLAGS	+= -g

endif



KBUILD_AFLAGS	+= -Wa,-gdwarf-2

endif



ifdef CONFIG_DEBUG_INFO_DWARF4

DEBUG_CFLAGS	+= -gdwarf-4

endif
@@ -838,6 +840,8 @@ KBUILD_AFLAGS += -gz=zlib 
KBUILD_LDFLAGS	+= --compress-debug-sections=zlib

endif



endif # CONFIG_DEBUG_INFO



KBUILD_CFLAGS += $(DEBUG_CFLAGS)

export DEBUG_CFLAGS

lib/Kconfig.debug

+4 −6
Original line number Diff line number Diff line
@@ -212,9 +212,10 @@ config DEBUG_INFO 


	  If unsure, say N.



if DEBUG_INFO



config DEBUG_INFO_REDUCED

	bool "Reduce debugging information"

	depends on DEBUG_INFO

	help

	  If you say Y here gcc is instructed to generate less debugging

	  information for structure types. This means that tools that
@@ -227,7 +228,6 @@ config DEBUG_INFO_REDUCED 


config DEBUG_INFO_COMPRESSED

	bool "Compressed debugging information"

	depends on DEBUG_INFO

	depends on $(cc-option,-gz=zlib)

	depends on $(ld-option,--compress-debug-sections=zlib)

	help
@@ -243,7 +243,6 @@ config DEBUG_INFO_COMPRESSED 


config DEBUG_INFO_SPLIT

	bool "Produce split debuginfo in .dwo files"

	depends on DEBUG_INFO

	depends on $(cc-option,-gsplit-dwarf)

	help

	  Generate debug info into separate .dwo files. This significantly
@@ -259,7 +258,6 @@ config DEBUG_INFO_SPLIT 


config DEBUG_INFO_DWARF4

	bool "Generate dwarf4 debuginfo"

	depends on DEBUG_INFO

	depends on $(cc-option,-gdwarf-4)

	help

	  Generate dwarf4 debug info. This requires recent versions
@@ -269,7 +267,6 @@ config DEBUG_INFO_DWARF4 


config DEBUG_INFO_BTF

	bool "Generate BTF typeinfo"

	depends on DEBUG_INFO

	depends on !DEBUG_INFO_SPLIT && !DEBUG_INFO_REDUCED

	depends on !GCC_PLUGIN_RANDSTRUCT || COMPILE_TEST

	help
@@ -279,7 +276,6 @@ config DEBUG_INFO_BTF 


config GDB_SCRIPTS

	bool "Provide GDB scripts for kernel debugging"

	depends on DEBUG_INFO

	help

	  This creates the required links to GDB helper scripts in the

	  build directory. If you load vmlinux into gdb, the helper
@@ -288,6 +284,8 @@ config GDB_SCRIPTS 
	  instance. See Documentation/dev-tools/gdb-kernel-debugging.rst

	  for further details.



endif # DEBUG_INFO



config ENABLE_MUST_CHECK

	bool "Enable __must_check logic"

	default y

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