Reorganize the structure of benchmarks

test/benchmark/lmbench/process_exec_lat/config.json

@@ -0,0 +1,8 @@
+{
+    "alert_threshold": "125%",
+    "alert_tool": "customSmallerIsBetter",
+    "search_pattern": "Process fork\\+execve",
+    "result_index": "3",
+    "description": "lat_proc exec",
+    "title": "[Process] The cost of fork+exec+exit"
+}

test/benchmark/lmbench/process_exec_lat/result_template.json

@@ -0,0 +1,14 @@
+[
+    {
+        "name": "Average exec latency on Linux",
+        "unit": "µs",
+        "value": 0,
+        "extra": "linux_result"
+    },
+    {
+        "name": "Average exec latency on Asterinas",
+        "unit": "µs",
+        "value": 0,
+        "extra": "aster_result"
+    }
+]

test/benchmark/lmbench/process_exec_lat/run.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+echo "*** Running the LMbench exec latency test ***"
+
+cp /benchmark/bin/lmbench/hello /tmp/
+/benchmark/bin/lmbench/lat_proc -P 1 exec