Index: src/benchmark/mutex/function.c
===================================================================
--- src/benchmark/mutex/function.c	(revision 9f0b975c56f63828c0654bdcb93739755b3f66aa)
+++ src/benchmark/mutex/function.c	(revision b1e68d0353f497191202b2ee47853c063104f360)
@@ -3,10 +3,12 @@
 #include "bench.h"
 
-void __attribute__((noinline)) call() {}
+void __attribute__((noinline)) do_call() {
+	asm volatile ("");
+}
 
 int main(int argc, char* argv[]) {
 	BENCH(
 		for (size_t i = 0; i < n; i++) {
-			call();
+			do_call();
 		},
 		result