From: Josh Poimboeuf <jpoimboe@redhat.com>
Date: Tue, 19 Jun 2018 15:47:50 +0000 (-0500)
Subject: objtool: Add machine_real_restart() to the noreturn list
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=684fb246578b9e81fc7b4ca5c71eae22edb650b2;p=linux.git

objtool: Add machine_real_restart() to the noreturn list

machine_real_restart() is annotated as '__noreturn", so add it to the
objtool noreturn list.  This fixes the following warning with clang and
CONFIG_CC_OPTIMIZE_FOR_SIZE=y:

  arch/x86/kernel/reboot.o: warning: objtool: native_machine_emergency_restart() falls through to next function machine_power_off()

Reported-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lkml.kernel.org/r/791712792aa4431bdd55bf1beb33a169ddf3b4a2.1529423255.git.jpoimboe@redhat.com
---

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 38047c6aa5757..f4a25bd1871fb 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -164,6 +164,7 @@ static int __dead_end_function(struct objtool_file *file, struct symbol *func,
 		"lbug_with_loc",
 		"fortify_panic",
 		"usercopy_abort",
+		"machine_real_restart",
 	};
 
 	if (func->bind == STB_WEAK)