Re: [RFC 00/31] objtool, livepatch: Livepatch module generation

[Josh Poimboeuf]

On Sat, Sep 07, 2024 at 10:04:25PM -0700, Song Liu wrote:
> I think gcc doesn't complain, but clang does:
> 
> $ cat ttt.c
> static inline void ret(void)
> {
>   return;
> }
> 
> int main(void)
> {
>   return 0;
> }

Ah...  That's probably why the kernel adds "__maybe_unused" to its
inline macro (which the tools don't have).

Does this fix?

diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index d1740a724eb2..74fec9f97339 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -100,7 +100,7 @@ static inline unsigned long __sym_last(struct symbol *s)
 }
 
 INTERVAL_TREE_DEFINE(struct symbol, node, unsigned long, __subtree_last,
-		     __sym_start, __sym_last, static inline,
+		     __sym_start, __sym_last, static inline __maybe_unused,
 		     __sym)
 
 #define __sym_for_each(_iter, _tree, _start, _end)			\