---

yaml
---
r: 204824
b: refs/heads/master
c: d6f4ceb
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 01ab17887f4cdcb8bb5a5d1bc3b160d186e6e99b
+refs/heads/master: d6f4ceb796ebf1a8c8a9ad4a8ea0d181aaec7de6

trunk/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

trunk/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