kernel: keep more symbols in the kernel modules when doing profiling

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30762 3c298f89-4303-0410-b956-a3cf2f4a3e73

rules.mk

@@ -220,7 +220,9 @@ else
     endif
   endif
   RSTRIP:= \
-    export CROSS="$(TARGET_CROSS)" $(if $(CONFIG_KERNEL_KALLSYMS),NO_RENAME=1); \
+    export CROSS="$(TARGET_CROSS)" \
+		$(if $(CONFIG_KERNEL_KALLSYMS),NO_RENAME=1) \
+		$(if $(CONFIG_KERNEL_PROFILING),KEEP_SYMBOLS=1); \
     NM="$(TARGET_CROSS)nm" \
     STRIP="$(STRIP)" \
     STRIP_KMOD="$(SCRIPT_DIR)/strip-kmod.sh" \

scripts/strip-kmod.sh

@@ -11,16 +11,18 @@ MODULE="$1"
 	exit 1
 }
 
+ARGS=
+[ -n "$KEEP_SYMBOLS" ] || ARGS="-x -G __this_module --strip-unneeded"
+
 ${CROSS}objcopy \
-	--strip-unneeded \
 	-R .comment \
 	-R .pdr \
 	-R .mdebug.abi32 \
 	-R .note.gnu.build-id \
 	-R .gnu.attributes \
 	-R .reginfo \
-	-G __this_module \
-	-x "$MODULE" "$MODULE.tmp"
+	$ARGS \
+	"$MODULE" "$MODULE.tmp"
 
 [ -n "$NO_RENAME" ] && {
 	mv "${MODULE}.tmp" "$MODULE"