kbuild: Fix recordmcount dependency for OOT modules

Forwarded: no

We never rebuild anything in-tree when building an out-of-tree
modules, so external modules should not depend on the recordmcount
sources.

Gbp-Pq: Topic bugfix/all
Gbp-Pq: Name kbuild-fix-recordmcount-dependency.patch

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 02197cb8e3a7718a98003f85ca819eb8d10f9f99..cbbb6bf8b7aeb06fc50ef8335a684ffed009944d 100644 (file)
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -217,6 +217,11 @@ cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)),
        $(sub_cmd_record_mcount))
 endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
 
+# Don't require recordmcount source for an OOT build.
+ifdef KBUILD_EXTMOD
+recordmcount_source :=
+endif
+
 ifdef CONFIG_STACK_VALIDATION
 ifndef CONFIG_LTO_CLANG