diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index d63019b..7324907 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -152,6 +152,9 @@
         { REQ,      "/sys/kernel/debug/tracing/events/binder/binder_locked/enable" },
         { REQ,      "/sys/kernel/debug/tracing/events/binder/binder_unlock/enable" },
     } },
+    { "pagecache",  "Page cache", 0, {
+        { REQ,      "/sys/kernel/debug/tracing/events/filemap/enable" },
+    } },
 };
 
 /* Command line options */