diff --git a/hphp/idl/continuation.idl.php b/hphp/idl/continuation.idl.php
index 283677fc5..8502d7fa4 100644
--- a/hphp/idl/continuation.idl.php
+++ b/hphp/idl/continuation.idl.php
@@ -350,14 +350,6 @@ DefineFunction(
     ),
   ));
 
-DefineFunction(
-  array(
-    'name'   => 'getCalledClass',
-    'return' => array(
-      'type'   => String,
-    ),
-  ));
-
 DefineFunction(
   array(
     'name'   => '__clone',
diff --git a/hphp/runtime/ext/ext_continuation.cpp b/hphp/runtime/ext/ext_continuation.cpp
index 39d535f48..510661522 100644
--- a/hphp/runtime/ext/ext_continuation.cpp
+++ b/hphp/runtime/ext/ext_continuation.cpp
@@ -155,20 +155,26 @@ void c_Continuation::t_raised() {
 }
 
 String c_Continuation::t_getorigfuncname() {
-  return m_origFuncName;
-}
-
-String c_Continuation::t_getcalledclass() {
   String called_class;
   if (actRec()->hasThis()) {
     called_class = actRec()->getThis()->getVMClass()->name()->data();
   } else if (actRec()->hasClass()) {
     called_class = actRec()->getClass()->name()->data();
-  } else {
-    called_class = String("");
+  }
+  if (called_class.size() == 0) {
+    return m_origFuncName;
   }
 
-  return called_class;
+  /*
+    Replace the class name in m_origFuncName with the LSB class.  This
+    produces more useful traces.
+   */
+  size_t method_pos = m_origFuncName.find("::");
+  if (method_pos != std::string::npos) {
+    return concat3(called_class, "::", m_origFuncName.substr(method_pos+2));
+  } else {
+    return m_origFuncName;
+  }
 }
 
 Variant c_Continuation::t___clone() {
diff --git a/hphp/runtime/ext/ext_continuation.ext_hhvm.cpp b/hphp/runtime/ext/ext_continuation.ext_hhvm.cpp
index d76f923dc..bec956dd2 100644
--- a/hphp/runtime/ext/ext_continuation.ext_hhvm.cpp
+++ b/hphp/runtime/ext/ext_continuation.ext_hhvm.cpp
@@ -728,44 +728,6 @@ TypedValue* tg_12Continuation_getOrigFuncName(HPHP::VM::ActRec *ar) {
   return &ar->m_r;
 }
 
-/*
-HPHP::String HPHP::c_Continuation::t_getcalledclass()
-_ZN4HPHP14c_Continuation16t_getcalledclassEv
-
-(return value) => rax
-_rv => rdi
-this_ => rsi
-*/
-
-Value* th_12Continuation_getCalledClass(Value* _rv, ObjectData* this_) asm("_ZN4HPHP14c_Continuation16t_getcalledclassEv");
-
-TypedValue* tg_12Continuation_getCalledClass(HPHP::VM::ActRec *ar) {
-    TypedValue rv;
-    int64_t count = ar->numArgs();
-    TypedValue* args UNUSED = ((TypedValue*)ar) - 1;
-    ObjectData* this_ = (ar->hasThis() ? ar->getThis() : NULL);
-    if (this_) {
-      if (count == 0LL) {
-        rv.m_type = KindOfString;
-        th_12Continuation_getCalledClass((&rv.m_data), (this_));
-        if (rv.m_data.num == 0LL) rv.m_type = KindOfNull;
-        frame_free_locals_inl(ar, 0);
-        memcpy(&ar->m_r, &rv, sizeof(TypedValue));
-        return &ar->m_r;
-      } else {
-        throw_toomany_arguments_nr("Continuation::getCalledClass", 0, 1);
-      }
-    } else {
-      throw_instance_method_fatal("Continuation::getCalledClass");
-    }
-    rv.m_data.num = 0LL;
-    rv.m_type = KindOfNull;
-    frame_free_locals_inl(ar, 0);
-    memcpy(&ar->m_r, &rv, sizeof(TypedValue));
-    return &ar->m_r;
-  return &ar->m_r;
-}
-
 /*
 HPHP::Variant HPHP::c_Continuation::t___clone()
 _ZN4HPHP14c_Continuation9t___cloneEv
diff --git a/hphp/runtime/ext/ext_continuation.h b/hphp/runtime/ext/ext_continuation.h
index 226ef7239..7e447795d 100644
--- a/hphp/runtime/ext/ext_continuation.h
+++ b/hphp/runtime/ext/ext_continuation.h
@@ -61,7 +61,6 @@ class c_Continuation : public ExtObjectData {
   public: void t_raise(CVarRef v);
   public: void t_raised();
   public: String t_getorigfuncname();
-  public: String t_getcalledclass();
   public: Variant t___clone();
 
   static c_Continuation* alloc(VM::Class* cls, int nLocals, int nIters) {
diff --git a/hphp/runtime/ext_hhvm/ext_hhvm_infotabs.cpp b/hphp/runtime/ext_hhvm/ext_hhvm_infotabs.cpp
index e5897d119..4ae190b16 100644
--- a/hphp/runtime/ext_hhvm/ext_hhvm_infotabs.cpp
+++ b/hphp/runtime/ext_hhvm/ext_hhvm_infotabs.cpp
@@ -2451,7 +2451,6 @@ TypedValue* tg_12Continuation_valid(VM::ActRec *ar);
 TypedValue* tg_12Continuation_send(VM::ActRec *ar);
 TypedValue* tg_12Continuation_raise(VM::ActRec *ar);
 TypedValue* tg_12Continuation_getOrigFuncName(VM::ActRec *ar);
-TypedValue* tg_12Continuation_getCalledClass(VM::ActRec *ar);
 TypedValue* tg_12Continuation___clone(VM::ActRec *ar);
 VM::Instance* new_DummyContinuation_Instance(VM::Class*);
 TypedValue* tg_17DummyContinuation___construct(VM::ActRec *ar);
@@ -5538,7 +5537,7 @@ static const HhbcExtMethodInfo hhbc_ext_methods_PairIterator[] = {
   { "rewind", tg_12PairIterator_rewind }
 };
 
-static const long long hhbc_ext_method_count_Continuation = 17;
+static const long long hhbc_ext_method_count_Continuation = 16;
 static const HhbcExtMethodInfo hhbc_ext_methods_Continuation[] = {
   { "__construct", tg_12Continuation___construct },
   { "update", tg_12Continuation_update },
@@ -5555,7 +5554,6 @@ static const HhbcExtMethodInfo hhbc_ext_methods_Continuation[] = {
   { "send", tg_12Continuation_send },
   { "raise", tg_12Continuation_raise },
   { "getOrigFuncName", tg_12Continuation_getOrigFuncName },
-  { "getCalledClass", tg_12Continuation_getCalledClass },
   { "__clone", tg_12Continuation___clone }
 };
 
diff --git a/hphp/runtime/vm/bytecode.cpp b/hphp/runtime/vm/bytecode.cpp
index aea864e5c..42d6de2bc 100644
--- a/hphp/runtime/vm/bytecode.cpp
+++ b/hphp/runtime/vm/bytecode.cpp
@@ -2341,9 +2341,8 @@ Array VMExecutionContext::debugBacktrace(bool skip /* = false */,
     if (fp->m_func->isNoInjection()) {
       continue;
     }
-    // Builtins don't have a file and line number and Zend 5.5 does not
-    // include this information for generators
-    if (prevFp && !prevFp->m_func->isBuiltin() && !fp->m_func->isGenerator()) {
+    // Builtins don't have a file and line number
+    if (prevFp && !prevFp->m_func->isBuiltin()) {
       Unit* unit = prevFp->m_func->unit();
       assert(unit);
       const char *filename = unit->filepath()->data();
@@ -6645,7 +6644,7 @@ VMExecutionContext::createContinuation(ActRec* fp,
   }
   static const StringData* closure = StringData::GetStaticString("{closure}");
   const StringData* origName =
-    origFunc->isClosureBody() ? closure : origFunc->name();
+    origFunc->isClosureBody() ? closure : origFunc->fullName();
   int nLocals = genFunc->numLocals();
   int nIters = genFunc->numIterators();
   Class* genClass = SystemLib::s_ContinuationClass;
diff --git a/hphp/runtime/vm/translator/hopt/hhbctranslator.cpp b/hphp/runtime/vm/translator/hopt/hhbctranslator.cpp
index 4b4e1d195..eca03e14e 100644
--- a/hphp/runtime/vm/translator/hopt/hhbctranslator.cpp
+++ b/hphp/runtime/vm/translator/hopt/hhbctranslator.cpp
@@ -1,4 +1,4 @@
- /*
+/*
    +----------------------------------------------------------------------+
    | HipHop for PHP                                                       |
    +----------------------------------------------------------------------+
diff --git a/hphp/system/class_map.cpp b/hphp/system/class_map.cpp
index cc465b234..31ebd8886 100644
--- a/hphp/system/class_map.cpp
+++ b/hphp/system/class_map.cpp
@@ -21994,11 +21994,6 @@ const char *g_class_map[] = {
   (const char *)0x14 /* KindOfString */, NULL,
   NULL,
   NULL,
-  (const char *)0x10006040, "getCalledClass", "", (const char*)0, (const char*)0,
-  "/**\n * ( excerpt from http://php.net/manual/en/continuation.getcalledclass.php\n * )\n *\n *\n * @return     string\n */",
-  (const char *)0x14 /* KindOfString */, NULL,
-  NULL,
-  NULL,
   (const char *)0x10006040, "__clone", "", (const char*)0, (const char*)0,
   "/**\n * ( excerpt from http://php.net/manual/en/continuation.clone.php )\n *\n *\n * @return     mixed\n */",
   (const char *)0xffffffff /* KindOfUnknown: $t: Variant */, NULL,
diff --git a/hphp/test/quick/continuation-funcname.php b/hphp/test/quick/continuation-funcname.php
index 6a6b7fd35..1bd9b634f 100644
--- a/hphp/test/quick/continuation-funcname.php
+++ b/hphp/test/quick/continuation-funcname.php
@@ -10,4 +10,3 @@ class ShortDerp extends BaseDerp {}
 
 $sd = new ShortDerp;
 var_dump($sd->genDerp()->getOrigFuncName());
-var_dump($sd->genDerp()->getCalledClass());
diff --git a/hphp/test/quick/continuation-funcname.php.expect b/hphp/test/quick/continuation-funcname.php.expect
index 783c0489f..5469b8fb6 100644
--- a/hphp/test/quick/continuation-funcname.php.expect
+++ b/hphp/test/quick/continuation-funcname.php.expect
@@ -1,2 +1 @@
-string(7) "genDerp"
-string(9) "ShortDerp"
+string(18) "ShortDerp::genDerp"
diff --git a/hphp/test/quick/debug_backtrace_continuation.php b/hphp/test/quick/debug_backtrace_continuation.php
index d70746bc9..051152299 100644
--- a/hphp/test/quick/debug_backtrace_continuation.php
+++ b/hphp/test/quick/debug_backtrace_continuation.php
@@ -10,18 +10,4 @@ function my_wrapper() {
   $gen->send(null);
 }
 
-class my_class {
-  static function my_member_generator() {
-    $value = yield null;
-    var_dump(debug_backtrace());
-  }
-}
-
-function my_class_wrapper() {
-  $gen = my_class::my_member_generator();
-  $gen->next();
-  $gen->send(null);
-}
-
 my_wrapper();
-my_class_wrapper();
diff --git a/hphp/test/quick/debug_backtrace_continuation.php.expectf b/hphp/test/quick/debug_backtrace_continuation.php.expectf
index d1d4a6378..4489604c5 100644
--- a/hphp/test/quick/debug_backtrace_continuation.php.expectf
+++ b/hphp/test/quick/debug_backtrace_continuation.php.expectf
@@ -1,6 +1,10 @@
 array(3) {
   [0]=>
-  array(2) {
+  array(4) {
+    ["file"]=>
+    string(0) ""
+    ["line"]=>
+    int(-1)
     ["function"]=>
     string(12) "my_generator"
     ["args"]=>
@@ -36,7 +40,7 @@ array(3) {
     ["file"]=>
     string(%d) "%s"
     ["line"]=>
-    int(26)
+    int(13)
     ["function"]=>
     string(10) "my_wrapper"
     ["args"]=>
@@ -44,53 +48,3 @@ array(3) {
     }
   }
 }
-array(3) {
-  [0]=>
-  array(4) {
-    ["function"]=>
-    string(19) "my_member_generator"
-    ["class"]=>
-    string(8) "my_class"
-    ["type"]=>
-    string(2) "::"
-    ["args"]=>
-    array(1) {
-      [0]=>
-      object(Continuation)#1 (0) {
-      }
-    }
-  }
-  [1]=>
-  array(7) {
-    ["file"]=>
-    string(%d) "%s"
-    ["line"]=>
-    int(23)
-    ["function"]=>
-    string(4) "send"
-    ["class"]=>
-    string(12) "Continuation"
-    ["object"]=>
-    object(Continuation)#1 (0) {
-    }
-    ["type"]=>
-    string(2) "->"
-    ["args"]=>
-    array(1) {
-      [0]=>
-      NULL
-    }
-  }
-  [2]=>
-  array(4) {
-    ["file"]=>
-    string(%d) "%s"
-    ["line"]=>
-    int(27)
-    ["function"]=>
-    string(16) "my_class_wrapper"
-    ["args"]=>
-    array(0) {
-    }
-  }
-}
diff --git a/hphp/test/slow/traits/2071.php b/hphp/test/slow/traits/2071.php
index a38546acc..9d5d8cf25 100644
--- a/hphp/test/slow/traits/2071.php
+++ b/hphp/test/slow/traits/2071.php
@@ -6,7 +6,6 @@ function f($x) {
 }
 $c = f(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
 trait T {
   function f($x) { yield get_called_class(); }
 }
@@ -14,8 +13,6 @@ class X { use T; }
 $x = new X;
 $c = $x->f(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
 $fcn = function ($x) { yield $x; };
 $c = $fcn(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
diff --git a/hphp/test/slow/traits/2071.php.expect b/hphp/test/slow/traits/2071.php.expect
index 245282613..16582bd16 100644
--- a/hphp/test/slow/traits/2071.php.expect
+++ b/hphp/test/slow/traits/2071.php.expect
@@ -1,6 +1,3 @@
 string(1) "f"
-string(0) ""
-string(1) "f"
-string(1) "X"
+string(4) "X::f"
 string(9) "{closure}"
-string(0) ""
diff --git a/hphp/test/slow/yield/2174.php b/hphp/test/slow/yield/2174.php
index e9a0df55b..072e478d8 100644
--- a/hphp/test/slow/yield/2174.php
+++ b/hphp/test/slow/yield/2174.php
@@ -6,7 +6,6 @@ function f($x) {
 }
 $c = f(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
 class X {
   function f($x) { yield $x; }
   static function g($x) { yield get_called_class(); }
@@ -15,14 +14,10 @@ class Y extends X {}
 $x = new X;
 $c = $x->f(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
 $c = X::g(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
 $c = Y::g(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
 $fcn = function ($x) { yield $x; };
 $c = $fcn(32);
 var_dump($c->getOrigFuncName());
-var_dump($c->getCalledClass());
diff --git a/hphp/test/slow/yield/2174.php.expect b/hphp/test/slow/yield/2174.php.expect
index a49480f25..90f151ca5 100644
--- a/hphp/test/slow/yield/2174.php.expect
+++ b/hphp/test/slow/yield/2174.php.expect
@@ -1,10 +1,5 @@
 string(1) "f"
-string(0) ""
-string(1) "f"
-string(1) "X"
-string(1) "g"
-string(1) "X"
-string(1) "g"
-string(1) "Y"
+string(4) "X::f"
+string(4) "X::g"
+string(4) "Y::g"
 string(9) "{closure}"
-string(0) ""
diff --git a/hphp/test/test_code_run.cpp b/hphp/test/test_code_run.cpp
index b6e640435..b51ea628f 100644
--- a/hphp/test/test_code_run.cpp
+++ b/hphp/test/test_code_run.cpp
@@ -26010,7 +26010,6 @@ bool TestCodeRun::TestYield() {
         "}\n"
         "$c = f(32);\n"
         "var_dump($c->getOrigFuncName());\n"
-        "var_dump($c->getCalledClass());\n"
         "class X {\n"
         "  function f($x) { yield $x; }\n"
         "  static function g($x) { yield get_called_class(); }\n"
@@ -26019,28 +26018,18 @@ bool TestCodeRun::TestYield() {
         "$x = new X;\n"
         "$c = $x->f(32);\n"
         "var_dump($c->getOrigFuncName());\n"
-        "var_dump($c->getCalledClass());\n"
         "$c = X::g(32);\n"
         "var_dump($c->getOrigFuncName());\n"
-        "var_dump($c->getCalledClass());\n"
         "$c = Y::g(32);\n"
         "var_dump($c->getOrigFuncName());\n"
-        "var_dump($c->getCalledClass());\n"
         "$fcn = function ($x) { yield $x; };\n"
         "$c = $fcn(32);\n"
-        "var_dump($c->getOrigFuncName());\n"
-        "var_dump($c->getCalledClass());\n"
-        ,
+        "var_dump($c->getOrigFuncName());\n",
         "string(1) \"f\"\n"
-        "string(0) \"\"\n"
-        "string(1) \"f\"\n"
-        "string(1) \"X\"\n"
-        "string(1) \"g\"\n"
-        "string(1) \"X\"\n"
-        "string(1) \"g\"\n"
-        "string(1) \"Y\"\n"
-        "string(9) \"{closure}\"\n"
-        "string(0) \"\"\n");
+        "string(4) \"X::f\"\n"
+        "string(4) \"X::g\"\n"
+        "string(4) \"Y::g\"\n"
+        "string(9) \"{closure}\"\n");
 
   MVCRO("<?php "
         "function gen() {"
@@ -31667,7 +31656,6 @@ bool TestCodeRun::TestTraits() {
           "}\n"
           "$c = f(32);\n"
           "var_dump($c->getOrigFuncName());\n"
-          "var_dump($c->getCalledClass());\n"
           "trait T {\n"
           "  function f($x) { yield get_called_class(); }\n"
           "}\n"
@@ -31675,18 +31663,13 @@ bool TestCodeRun::TestTraits() {
           "$x = new X;\n"
           "$c = $x->f(32);\n"
           "var_dump($c->getOrigFuncName());\n"
-          "var_dump($c->getCalledClass());\n"
           "$fcn = function ($x) { yield $x; };\n"
           "$c = $fcn(32);\n"
           "var_dump($c->getOrigFuncName());\n"
-          "var_dump($c->getCalledClass());\n"
           ,
           "string(1) \"f\"\n"
-          "string(0) \"\"\n"
-          "string(1) \"f\"\n"
-          "string(1) \"X\"\n"
+          "string(4) \"X::f\"\n"
           "string(9) \"{closure}\"\n"
-          "string(0) \"\"\n"
          );
 
     MVCRO("<?php "