From 50ab9a69275dca588cb5ad5038657f069bbdeb56 Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Sat, 21 Mar 2015 02:50:01 +0100 Subject: kbuild: include core debug info when DEBUG_INFO_REDUCED With CONFIG_DEBUG_INFO_REDUCED, we do get quite a lot of debug info (around 22.7 MB for a defconfig+DEBUG_INFO_REDUCED). However, the "basenames must match" rule used by -femit-struct-debug-baseonly option means that we miss some core data structures, such as struct {device, file, inode, mm_struct, page} etc. We can easily get these included as well, while still getting the benefits of CONFIG_DEBUG_INFO_REDUCED (faster build times and smaller individual object files): All it takes is a dummy translation unit including a few strategic headers and compiled with a flag overriding -femit-struct-debug-baseonly. This increases the size of .debug_info by ~0.3%, but these 90 KB contain some rather useful info. Signed-off-by: Rasmus Villemoes Signed-off-by: Michal Marek --- lib/Makefile | 3 +++ 1 file changed, 3 insertions(+) (limited to 'lib/Makefile') diff --git a/lib/Makefile b/lib/Makefile index 6c37933336a0..c918538110ed 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -45,6 +45,9 @@ CFLAGS_kobject.o += -DDEBUG CFLAGS_kobject_uevent.o += -DDEBUG endif +obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o +CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any) + obj-$(CONFIG_GENERIC_IOMAP) += iomap.o obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o -- cgit