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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2015-03-21 02:50:01 +0100
committerMichal Marek <mmarek@suse.cz>2015-06-11 15:08:32 +0200
commit50ab9a69275dca588cb5ad5038657f069bbdeb56 (patch)
treeefbc69d993a916f8a38dd8d61bcc75eca4edcc97 /lib/debug_info.c
parentcc8475305203ddfd117b81e2e732194b67d8f310 (diff)
downloadlinux-linaro-stable-50ab9a69275dca588cb5ad5038657f069bbdeb56.tar.gz
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 <linux@rasmusvillemoes.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'lib/debug_info.c')
-rw-r--r--lib/debug_info.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/debug_info.c b/lib/debug_info.c
new file mode 100644
index 000000000000..2edbe27517ed
--- /dev/null
+++ b/lib/debug_info.c
@@ -0,0 +1,27 @@
+/*
+ * This file exists solely to ensure debug information for some core
+ * data structures is included in the final image even for
+ * CONFIG_DEBUG_INFO_REDUCED. Please do not add actual code. However,
+ * adding appropriate #includes is fine.
+ */
+#include <stdarg.h>
+
+#include <linux/cred.h>
+#include <linux/crypto.h>
+#include <linux/dcache.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/fscache-cache.h>
+#include <linux/io.h>
+#include <linux/kallsyms.h>
+#include <linux/kernel.h>
+#include <linux/kobject.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/net.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <net/addrconf.h>
+#include <net/sock.h>
+#include <net/tcp.h>