Index: clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.h
===================================================================
--- clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.h
+++ clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.h
@@ -6,20 +6,20 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OBJC_AVOID_SPINLOCK_H
-#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OBJC_AVOID_SPINLOCK_H
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_DARWIN_AVOIDSPINLOCKCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_DARWIN_AVOIDSPINLOCKCHECK_H
 
 #include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
-namespace objc {
+namespace darwin {
 
 /// Finds usages of OSSpinlock, which is deprecated due to potential livelock
 /// problems.
 ///
 /// For the user-facing documentation see:
-/// http://clang.llvm.org/extra/clang-tidy/checks/objc-avoid-spinlock.html
+/// http://clang.llvm.org/extra/clang-tidy/checks/darwin-avoid-spinlock.html
 class AvoidSpinlockCheck : public ClangTidyCheck {
  public:
   AvoidSpinlockCheck(StringRef Name, ClangTidyContext *Context)
@@ -28,8 +28,8 @@
   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
 };
 
-}  // namespace objc
+}  // namespace darwin
 }  // namespace tidy
 }  // namespace clang
 
-#endif  // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OBJC_AVOID_SPINLOCK_H
+#endif  // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_DARWIN_AVOIDSPINLOCKCHECK_H
Index: clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.cpp
+++ clang-tools-extra/clang-tidy/darwin/AvoidSpinlockCheck.cpp
@@ -14,7 +14,7 @@
 
 namespace clang {
 namespace tidy {
-namespace objc {
+namespace darwin {
 
 void AvoidSpinlockCheck::registerMatchers(MatchFinder *Finder) {
   Finder->addMatcher(
@@ -31,6 +31,6 @@
        "deprecated OSSpinLock");
 }
 
-}  // namespace objc
+}  // namespace darwin
 }  // namespace tidy
 }  // namespace clang
Index: clang-tools-extra/clang-tidy/darwin/CMakeLists.txt
===================================================================
--- clang-tools-extra/clang-tidy/darwin/CMakeLists.txt
+++ clang-tools-extra/clang-tidy/darwin/CMakeLists.txt
@@ -1,6 +1,7 @@
 set(LLVM_LINK_COMPONENTS support)
 
 add_clang_library(clangTidyDarwinModule
+  AvoidSpinlockCheck.cpp
   DarwinTidyModule.cpp
   DispatchOnceNonstaticCheck.cpp
 
Index: clang-tools-extra/clang-tidy/darwin/DarwinTidyModule.cpp
===================================================================
--- clang-tools-extra/clang-tidy/darwin/DarwinTidyModule.cpp
+++ clang-tools-extra/clang-tidy/darwin/DarwinTidyModule.cpp
@@ -9,6 +9,7 @@
 #include "../ClangTidy.h"
 #include "../ClangTidyModule.h"
 #include "../ClangTidyModuleRegistry.h"
+#include "AvoidSpinlockCheck.h"
 #include "DispatchOnceNonstaticCheck.h"
 
 namespace clang {
@@ -18,6 +19,8 @@
 class DarwinModule : public ClangTidyModule {
 public:
   void addCheckFactories(ClangTidyCheckFactories &CheckFactories) override {
+    CheckFactories.registerCheck<AvoidSpinlockCheck>(
+        "darwin-avoid-spinlock");
     CheckFactories.registerCheck<DispatchOnceNonstaticCheck>(
         "darwin-dispatch-once-nonstatic");
   }
Index: clang-tools-extra/clang-tidy/objc/CMakeLists.txt
===================================================================
--- clang-tools-extra/clang-tidy/objc/CMakeLists.txt
+++ clang-tools-extra/clang-tidy/objc/CMakeLists.txt
@@ -2,7 +2,6 @@
 
 add_clang_library(clangTidyObjCModule
   AvoidNSErrorInitCheck.cpp
-  AvoidSpinlockCheck.cpp
   ForbiddenSubclassingCheck.cpp
   MissingHashCheck.cpp
   ObjCTidyModule.cpp
Index: clang-tools-extra/clang-tidy/objc/ObjCTidyModule.cpp
===================================================================
--- clang-tools-extra/clang-tidy/objc/ObjCTidyModule.cpp
+++ clang-tools-extra/clang-tidy/objc/ObjCTidyModule.cpp
@@ -10,7 +10,6 @@
 #include "../ClangTidyModule.h"
 #include "../ClangTidyModuleRegistry.h"
 #include "AvoidNSErrorInitCheck.h"
-#include "AvoidSpinlockCheck.h"
 #include "ForbiddenSubclassingCheck.h"
 #include "MissingHashCheck.h"
 #include "PropertyDeclarationCheck.h"
@@ -27,8 +26,6 @@
   void addCheckFactories(ClangTidyCheckFactories &CheckFactories) override {
     CheckFactories.registerCheck<AvoidNSErrorInitCheck>(
         "objc-avoid-nserror-init");
-    CheckFactories.registerCheck<AvoidSpinlockCheck>(
-        "objc-avoid-spinlock");
     CheckFactories.registerCheck<ForbiddenSubclassingCheck>(
         "objc-forbidden-subclassing");
     CheckFactories.registerCheck<MissingHashCheck>(
Index: clang-tools-extra/docs/ReleaseNotes.rst
===================================================================
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -67,6 +67,9 @@
 Improvements to clang-tidy
 --------------------------
 
+- The 'objc-avoid-spinlock' check was renamed to :doc:`darwin-avoid-spinlock
+  <clang-tidy/checks/darwin-avoid-spinlock>`
+
 - New :doc:`bugprone-dynamic-static-initializers
   <clang-tidy/checks/bugprone-dynamic-static-initializers>` check.
 
Index: clang-tools-extra/docs/clang-tidy/checks/darwin-avoid-spinlock.rst
===================================================================
--- clang-tools-extra/docs/clang-tidy/checks/darwin-avoid-spinlock.rst
+++ clang-tools-extra/docs/clang-tidy/checks/darwin-avoid-spinlock.rst
@@ -1,7 +1,7 @@
-.. title:: clang-tidy - objc-avoid-spinlock
+.. title:: clang-tidy - darwin-avoid-spinlock
 
-objc-avoid-spinlock
-===================
+darwin-avoid-spinlock
+=====================
 
 Finds usages of ``OSSpinlock``, which is deprecated due to potential livelock
 problems. 
Index: clang-tools-extra/docs/clang-tidy/checks/list.rst
===================================================================
--- clang-tools-extra/docs/clang-tidy/checks/list.rst
+++ clang-tools-extra/docs/clang-tidy/checks/list.rst
@@ -212,6 +212,7 @@
    cppcoreguidelines-pro-type-vararg
    cppcoreguidelines-slicing
    cppcoreguidelines-special-member-functions
+   darwin-avoid-spinlock
    darwin-dispatch-once-nonstatic
    fuchsia-default-arguments-calls
    fuchsia-default-arguments-declarations
@@ -325,7 +326,6 @@
    mpi-buffer-deref
    mpi-type-mismatch
    objc-avoid-nserror-init
-   objc-avoid-spinlock
    objc-forbidden-subclassing
    objc-missing-hash
    objc-property-declaration
Index: clang-tools-extra/test/clang-tidy/darwin-avoid-spinlock.m
===================================================================
--- clang-tools-extra/test/clang-tidy/darwin-avoid-spinlock.m
+++ clang-tools-extra/test/clang-tidy/darwin-avoid-spinlock.m
@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy %s objc-avoid-spinlock %t
+// RUN: %check_clang_tidy %s darwin-avoid-spinlock %t
 
 typedef int OSSpinLock;
 
@@ -6,10 +6,10 @@
 - (void)f {
     int i = 1;
     OSSpinlockLock(&i);
-    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use os_unfair_lock_lock() or dispatch queue APIs instead of the deprecated OSSpinLock [objc-avoid-spinlock]
+    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use os_unfair_lock_lock() or dispatch queue APIs instead of the deprecated OSSpinLock [darwin-avoid-spinlock]
     OSSpinlockTry(&i);
-    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use os_unfair_lock_lock() or dispatch queue APIs instead of the deprecated OSSpinLock [objc-avoid-spinlock]
+    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use os_unfair_lock_lock() or dispatch queue APIs instead of the deprecated OSSpinLock [darwin-avoid-spinlock]
     OSSpinlockUnlock(&i);
-    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use os_unfair_lock_lock() or dispatch queue APIs instead of the deprecated OSSpinLock [objc-avoid-spinlock]
+    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use os_unfair_lock_lock() or dispatch queue APIs instead of the deprecated OSSpinLock [darwin-avoid-spinlock]
 }
 @end