Add small utility used to trigger l3 accesses (conjoint use the a uncore cbo measuring utility allow cbo slice reverse)

cache_utils/src/bin/l3.rs

@@ -0,0 +1,13 @@
+use cache_utils::flush;
+use cache_utils::mmap::MMappedMemory;
+
+pub fn main() {
+    let m = unsafe { MMappedMemory::new(2 << 20) };
+    let array = m.slice();
+    loop {
+        unsafe {
+            flush(&array[0]);
+            flush(&array[(1 << 8) ^ (1 << 12) ^ (1 << 10)]);
+        }
+    }
+}

cache_utils/src/main.rs

@@ -57,6 +57,7 @@ pub fn main() {
     };*/
     let m = unsafe { MMappedMemory::new(SIZE) };
     let array = m.slice();
+
     /*
         let p = Box::new(Page { mem: [0; 4096] });