Instrument each load config initializer

In order to simplify profiling loading of initializers,
added instument for tracking load config initializer event from
`config/initializers`

1 files changed, 7 insertions, 1 deletions

diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 1296c0a843..3f109debdc 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -611,7 +611,7 @@ module Rails
 
     initializer :load_config_initializers do
       config.paths["config/initializers"].existent.sort.each do |initializer|
-        load(initializer)
+        load_config_initializer(initializer)
       end
     end
 
@@ -645,6 +645,12 @@ module Rails
 
     protected
 
+    def load_config_initializer(initializer)
+      ActiveSupport::Notifications.instrument('load_config_initializer.railties', initializer: initializer) do
+        load(initializer)
+      end
+    end
+
     def run_tasks_blocks(*) #:nodoc:
       super
       paths["lib/tasks"].existent.sort.each { |ext| load(ext) }