From: Josh Poimboeuf Date: Thu, 21 Jan 2021 21:29:21 +0000 (-0600) Subject: x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=18660698a3d30868524cefb60dcd4e0e297f71bb;p=linux.git x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub Prevent an unreachable objtool warning after the sibling call detection gets improved. ftrace_stub() is basically a function, annotate it as such. Acked-by: Steven Rostedt (VMware) Signed-off-by: Josh Poimboeuf Link: https://lore.kernel.org/r/6845e1b2fb0723a95740c6674e548ba38c5ea489.1611263461.git.jpoimboe@redhat.com --- diff --git a/arch/x86/kernel/ftrace_64.S b/arch/x86/kernel/ftrace_64.S index 0d54099c2a3a3..58d125ed9d1a0 100644 --- a/arch/x86/kernel/ftrace_64.S +++ b/arch/x86/kernel/ftrace_64.S @@ -184,6 +184,7 @@ SYM_INNER_LABEL(ftrace_graph_call, SYM_L_GLOBAL) * It is also used to copy the retq for trampolines. */ SYM_INNER_LABEL_ALIGN(ftrace_stub, SYM_L_WEAK) + UNWIND_HINT_FUNC retq SYM_FUNC_END(ftrace_epilogue)