diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index f59aea5c..9ea568eb 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -161,6 +161,7 @@ phutil_register_library_map(array(
     'PhutilLintEngine' => 'lint/engine/PhutilLintEngine.php',
     'PhutilUnitTestEngine' => 'unit/engine/PhutilUnitTestEngine.php',
     'PhutilUnitTestEngineTestCase' => 'unit/engine/__tests__/PhutilUnitTestEngineTestCase.php',
+    'TimerEventType' => 'events/constant/TimerEventType.php',
     'UnitTestableArcanistLintEngine' => 'lint/engine/UnitTestableArcanistLintEngine.php',
   ),
   'function' =>
@@ -288,6 +289,7 @@ phutil_register_library_map(array(
     'PhutilLintEngine' => 'ArcanistLintEngine',
     'PhutilUnitTestEngine' => 'ArcanistBaseUnitTestEngine',
     'PhutilUnitTestEngineTestCase' => 'ArcanistTestCase',
+    'TimerEventType' => 'PhutilEventType',
     'UnitTestableArcanistLintEngine' => 'ArcanistLintEngine',
   ),
 ));
diff --git a/src/lint/engine/ArcanistLintEngine.php b/src/lint/engine/ArcanistLintEngine.php
index 9ea1ddca..9e99e13a 100644
--- a/src/lint/engine/ArcanistLintEngine.php
+++ b/src/lint/engine/ArcanistLintEngine.php
@@ -230,9 +230,21 @@ abstract class ArcanistLintEngine {
 
         if ($paths) {
           $linter->willLintPaths($paths);
+          $profiler = PhutilServiceProfiler::getInstance();
           foreach ($paths as $path) {
             $linter->willLintPath($path);
-            $linter->lintPath($path);
+            $call_id = $profiler->beginServiceCall(array(
+              'type' => 'lint',
+              'linter' => get_class($linter),
+              'path' => $path,
+              ));
+            try {
+              $linter->lintPath($path);
+            } catch (Exception $ex) {
+              $profiler->endServiceCall($call_id, array());
+              throw $ex;
+            }
+            $profiler->endServiceCall($call_id, array());
             if ($linter->didStopAllLinters()) {
               $this->stopped[$path] = $linter_name;
             }