7 files changed, 9 insertions, 1 deletions
diff --git a/activejob/lib/active_job/callbacks.rb b/activejob/lib/active_job/callbacks.rb
index 29e2a878b4..c4ceb484cc 100644
--- a/activejob/lib/active_job/callbacks.rb
+++ b/activejob/lib/active_job/callbacks.rb
@@ -22,6 +22,8 @@ module ActiveJob
       define_callbacks :enqueue
     end
 
+    # These methods will be included into any Active Job object, adding
+    # callbacks for +perform+ and +enqueue+ methods.
     module ClassMethods
       # Defines a callback that will get called right before the
       # job's perform method is executed.
diff --git a/activejob/lib/active_job/core.rb b/activejob/lib/active_job/core.rb
index 68d46e6466..a0e55a0028 100644
--- a/activejob/lib/active_job/core.rb
+++ b/activejob/lib/active_job/core.rb
@@ -17,6 +17,8 @@ module ActiveJob
       attr_writer :queue_name
     end
 
+    # These methods will be included into any Active Job object, adding
+    # helpers for de/serialization and creation of job instances.
     module ClassMethods
       # Creates a new job instance from a hash created with +serialize+
       def deserialize(job_data)
diff --git a/activejob/lib/active_job/enqueuing.rb b/activejob/lib/active_job/enqueuing.rb
index 53d944021a..430c17e1bf 100644
--- a/activejob/lib/active_job/enqueuing.rb
+++ b/activejob/lib/active_job/enqueuing.rb
@@ -4,6 +4,7 @@ module ActiveJob
   module Enqueuing
     extend ActiveSupport::Concern
 
+    # Includes the +perform_later+ method for job initialization.
     module ClassMethods
       # Push a job onto the queue. The arguments must be legal JSON types
       # (string, int, float, nil, true, false, hash or array) or
diff --git a/activejob/lib/active_job/execution.rb b/activejob/lib/active_job/execution.rb
index 7ff857206d..79d232da4a 100644
--- a/activejob/lib/active_job/execution.rb
+++ b/activejob/lib/active_job/execution.rb
@@ -6,6 +6,7 @@ module ActiveJob
     extend ActiveSupport::Concern
     include ActiveSupport::Rescuable
 
+    # Includes methods for executing and performing jobs instantly.
     module ClassMethods
       # Performs the job immediately.
       #
diff --git a/activejob/lib/active_job/logging.rb b/activejob/lib/active_job/logging.rb
index 6e703faaa7..21d2fda3ff 100644
--- a/activejob/lib/active_job/logging.rb
+++ b/activejob/lib/active_job/logging.rb
@@ -75,7 +75,7 @@ module ActiveJob
       def perform(event)
         info do
           job = event.payload[:job]
-          "Performed #{job.class.name} from #{queue_name(event)} in #{event.duration.round(2).to_s}ms"
+          "Performed #{job.class.name} from #{queue_name(event)} in #{event.duration.round(2)}ms"
         end
       end
 
diff --git a/activejob/lib/active_job/queue_adapter.rb b/activejob/lib/active_job/queue_adapter.rb
index b42ec3b638..85d7c44bb8 100644
--- a/activejob/lib/active_job/queue_adapter.rb
+++ b/activejob/lib/active_job/queue_adapter.rb
@@ -7,6 +7,7 @@ module ActiveJob
   module QueueAdapter #:nodoc:
     extend ActiveSupport::Concern
 
+    # Includes the setter method for changing the active queue adapter.
     module ClassMethods
       mattr_reader(:queue_adapter) { ActiveJob::QueueAdapters::InlineAdapter }
 
diff --git a/activejob/lib/active_job/queue_name.rb b/activejob/lib/active_job/queue_name.rb
index 6ee7142ce6..9ae0345120 100644
--- a/activejob/lib/active_job/queue_name.rb
+++ b/activejob/lib/active_job/queue_name.rb
@@ -2,6 +2,7 @@ module ActiveJob
   module QueueName
     extend ActiveSupport::Concern
 
+    # Includes the ability to override the default queue name and prefix.
     module ClassMethods
       mattr_accessor(:queue_name_prefix)
       mattr_accessor(:default_queue_name) { "default" }