diff --git a/yocto-poky/bitbake/lib/bb/event.py b/yocto-poky/bitbake/lib/bb/event.py
index 366bc41..5ffe89e 100644
--- a/yocto-poky/bitbake/lib/bb/event.py
+++ b/yocto-poky/bitbake/lib/bb/event.py
@@ -31,6 +31,7 @@
 import logging
 import atexit
 import traceback
+import ast
 import bb.utils
 import bb.compat
 import bb.exceptions
@@ -177,7 +178,7 @@
     fire_ui_handlers(event, d)
 
 noop = lambda _: None
-def register(name, handler, mask=None):
+def register(name, handler, mask=None, filename=None, lineno=None):
     """Register an Event handler"""
 
     # already registered
@@ -189,7 +190,15 @@
         if isinstance(handler, basestring):
             tmp = "def %s(e):\n%s" % (name, handler)
             try:
-                code = compile(tmp, "%s(e)" % name, "exec")
+                code = bb.methodpool.compile_cache(tmp)
+                if not code:
+                    if filename is None:
+                        filename = "%s(e)" % name
+                    code = compile(tmp, filename, "exec", ast.PyCF_ONLY_AST)
+                    if lineno is not None:
+                        ast.increment_lineno(code, lineno-1)
+                    code = compile(code, filename, "exec")
+                    bb.methodpool.compile_cache_add(tmp, code)
             except SyntaxError:
                 logger.error("Unable to register event handler '%s':\n%s", name,
                              ''.join(traceback.format_exc(limit=0)))
@@ -595,6 +604,8 @@
             etype, value, tb = record.exc_info
             if hasattr(tb, 'tb_next'):
                 tb = list(bb.exceptions.extract_traceback(tb, context=3))
+            # Need to turn the value into something the logging system can pickle
+            value = str(value)
             record.bb_exc_info = (etype, value, tb)
             record.exc_info = None
         fire(record, None)