move the benchmarks around a little

benches/kernel_swap.rs

@@ -0,0 +1,15 @@
+#![feature(asm)]
+extern crate test;
+use test::Bencher;
+
+#[bench]
+fn kernel_swap(b: &mut Bencher) {
+  b.iter(|| unsafe {
+    asm!("movq $$102, %rax\n\
+          syscall"
+         :
+         :
+         : "rax", "rcx"
+         : "volatile");
+  });
+}

benches/swap.rs

@@ -1,4 +1,4 @@
-#![feature(unboxed_closures, default_type_params, asm)]
+#![feature(unboxed_closures, default_type_params, box_syntax)]
 extern crate test;
 extern crate libc;
 extern crate lwkt;
@@ -34,15 +34,3 @@ fn swap(b: &mut Bencher) {
     Context::swap(&mut native, &mut green);
   })
 }
-
-#[bench]
-fn kernel_swap(b: &mut Bencher) {
-  b.iter(|| unsafe {
-    asm!("movq $$102, %rax\n\
-          syscall"
-         :
-         :
-         : "rax", "rcx"
-         : "volatile");
-  });
-}