kbuild: warn when a moduled uses a symbol marked UNUSED

We now have infrastructure in place to mark an EXPORTed symbol
as unused. So the natural next step is to warn during buildtime when
a module uses a symbol marked UNUSED.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index 2b00c6062844..d398c61e55ef 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -117,7 +117,9 @@ struct elf_info {
         Elf_Sym      *symtab_start;
         Elf_Sym      *symtab_stop;
         Elf_Section  export_sec;
+        Elf_Section  export_unused_sec;
         Elf_Section  export_gpl_sec;
+        Elf_Section  export_unused_gpl_sec;
         Elf_Section  export_gpl_future_sec;
         const char   *strtab;
         char         *modinfo;