diff --git a/Makefile b/Makefile index dceb4f19f786f57849469ab0fb89ca0497e3ebdc..e1dfb90c6092c9c48854a5ab813293fdfe145570 100644 --- a/Makefile +++ b/Makefile @@ -557,6 +557,10 @@ KBUILD_CFLAGS += -g KBUILD_AFLAGS += -gdwarf-2 endif +ifdef CONFIG_DEBUG_INFO_REDUCED +KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) +endif + ifdef CONFIG_FUNCTION_TRACER KBUILD_CFLAGS += -pg endif diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 25c3ed594c547966c1c291750d8adeb3b9e5674b..2af5d84ec8249bb1fd67535c3eeaf71a1b5435be 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -595,6 +595,19 @@ config DEBUG_INFO If unsure, say N. +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 + need full debugging information (like kgdb or systemtap) won't + be happy. But if you merely need debugging information to + resolve line numbers there is no loss. Advantage is that + build directory object sizes shrink dramatically over a full + DEBUG_INFO build and compile times are reduced too. + Only works with newer gcc versions. + config DEBUG_VM bool "Debug VM" depends on DEBUG_KERNEL