Compile objtool with debugging symbols ('-g') to help tools like perf and gdb understand what it's doing. Combined with '-O2', it's not always helpful, but it's better than nothing.
Reported-by: Ingo Molnar <mi...@kernel.org> Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com> --- tools/objtool/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile index e4a6bd5..6765c7e 100644 --- a/tools/objtool/Makefile +++ b/tools/objtool/Makefile @@ -27,7 +27,7 @@ OBJTOOL_IN := $(OBJTOOL)-in.o all: $(OBJTOOL) INCLUDES := -I$(srctree)/tools/include -CFLAGS += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 $(INCLUDES) +CFLAGS += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES) LDFLAGS += -lelf $(LIBSUBCMD) AWK = awk -- 2.4.3