Add lmbench signal protection test

.github/workflows/benchmark_asterinas.yml

@@ -38,6 +38,7 @@ jobs:
           # Signal-related benchmarks
           - lmbench-signal
           - lmbench-signal-install
+          - lmbench-signal-prot
           # File-related benchmarks
           - lmbench-file-rd-bandwidth
           - lmbench-select-file

test/benchmark/lmbench-signal-prot/config.json

@@ -0,0 +1,7 @@
+{
+    "alert_threshold": "125%",
+    "alert_tool": "customSmallerIsBetter",
+    "search_pattern": "Protection fault:",
+    "result_index": "3",
+    "description": "The latency to catch a protection fault on a single processor."
+}

test/benchmark/lmbench-signal-prot/result_template.json

@@ -0,0 +1,14 @@
+[
+    {
+        "name": "Average protection fault latency on Linux",
+        "unit": "µs",
+        "value": 0,
+        "extra": "linux_avg"
+    },
+    {
+        "name": "Average protection fault latency on Asterinas",
+        "unit": "µs",
+        "value": 0,
+        "extra": "aster_avg"
+    }
+]

test/benchmark/lmbench-signal-prot/run.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+echo "*** Running the LMbench protection fault latency test ***"
+
+dd if=/dev/zero of=/ext2/test_file bs=1M count=256
+/benchmark/bin/lmbench/lat_sig prot /ext2/test_file