1 files changed, 21 insertions, 7 deletions
diff --git a/tools/guest-diag/wall2/pdbtick.py b/tools/guest-diag/wall2/pdbtick.py
index 35b9ab8..d65b79d 100644
--- a/tools/guest-diag/wall2/pdbtick.py
+++ b/tools/guest-diag/wall2/pdbtick.py
@@ -41,15 +41,29 @@ def main():
         t = threading.Thread(target=worker, args=(a, b)); t.start(); ts.append(t)
     for t in ts: t.join()
     if not res:
-        print("RING NOT FOUND"); return 1
-    # prefer the most recently written: check which page's entries beyond the
-    # first three match this run's full 16-entry sequence; else take the last
+        print("RING NOT FOUND")
+        return None
     hits = [gpa_of(x) for x in res]
-    print("ring candidates:", [hex(h) for h in hits])
+    print("ring candidates:", [hex(h) for h in hits], flush=True)
     for gpa in hits:
         cmd = "echo 0x%x,0x%x > %s" % (RING_VA, gpa, PARAM)
         r = subprocess.run(["sudo", "sh", "-c", cmd], capture_output=True)
-        print("sema_pdb_discover 0x%x,0x%x rc=%d" % (RING_VA, gpa, r.returncode))
-    return 0
+        print("sema_pdb_discover 0x%x,0x%x rc=%d" % (RING_VA, gpa, r.returncode), flush=True)
+    return hits
 
-sys.exit(main())
+
+def loop():
+    import time as _t
+    dur = float(sys.argv[1]) if len(sys.argv) > 1 else 120
+    end = _t.time() + dur
+    fired = set()
+    while _t.time() < end:
+        hits = main()
+        if hits:
+            new = [h for h in hits if h not in fired]
+            if new:
+                fired.update(new)
+        _t.sleep(1.0)
+    print("# pdbtick end", flush=True)
+
+loop()