diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index fc3572c..08f44c8 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -172,6 +172,8 @@
         { OPT,      "events/clk/clk_enable/enable" },
         { OPT,      "events/power/cpu_frequency_limits/enable" },
         { OPT,      "events/power/suspend_resume/enable" },
+        { OPT,      "events/cpuhp/cpuhp_enter/enable" },
+        { OPT,      "events/cpuhp/cpuhp_exit/enable" },
     } },
     { "membus",     "Memory Bus Utilization", 0, {
         { REQ,      "events/memory_bus/enable" },
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index 28770f2..0637693 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -47,6 +47,10 @@
     chmod 0666 /sys/kernel/tracing/events/power/clock_set_rate/enable
     chmod 0666 /sys/kernel/debug/tracing/events/power/cpu_frequency_limits/enable
     chmod 0666 /sys/kernel/tracing/events/power/cpu_frequency_limits/enable
+    chmod 0666 /sys/kernel/debug/tracing/events/cpuhp/cpuhp_enter/enable
+    chmod 0666 /sys/kernel/tracing/events/cpuhp/cpuhp_enter/enable
+    chmod 0666 /sys/kernel/debug/tracing/events/cpuhp/cpuhp_exit/enable
+    chmod 0666 /sys/kernel/tracing/events/cpuhp/cpuhp_exit/enable
     chmod 0666 /sys/kernel/debug/tracing/events/power/gpu_frequency/enable
     chmod 0666 /sys/kernel/tracing/events/power/gpu_frequency/enable
     chmod 0666 /sys/kernel/debug/tracing/events/power/suspend_resume/enable
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index f64ddc3..78c09f2 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -76,6 +76,7 @@
 #include <hardware_legacy/power.h>
 #include <hidl/ServiceManagement.h>
 #include <log/log.h>
+#include <log/log_read.h>
 #include <openssl/sha.h>
 #include <private/android_filesystem_config.h>
 #include <private/android_logger.h>
@@ -634,14 +635,24 @@
 
 static const long MINIMUM_LOGCAT_TIMEOUT_MS = 50000;
 
-/* timeout in ms to read a list of buffers */
+// Returns the actual readable size of the given buffer or -1 on error.
+static long logcat_buffer_readable_size(const std::string& buffer) {
+    std::unique_ptr<logger_list, decltype(&android_logger_list_free)> logger_list{
+        android_logger_list_alloc(0, 0, 0), &android_logger_list_free};
+    auto logger = android_logger_open(logger_list.get(), android_name_to_log_id(buffer.c_str()));
+
+    return android_logger_get_log_readable_size(logger);
+}
+
+// Returns timeout in ms to read a list of buffers.
 static unsigned long logcat_timeout(const std::vector<std::string>& buffers) {
     unsigned long timeout_ms = 0;
     for (const auto& buffer : buffers) {
-        log_id_t id = android_name_to_log_id(buffer.c_str());
-        unsigned long property_size = __android_logger_get_buffer_size(id);
-        /* Engineering margin is ten-fold our guess */
-        timeout_ms += 10 * (property_size + worst_write_perf) / worst_write_perf;
+        long readable_size = logcat_buffer_readable_size(buffer);
+        if (readable_size > 0) {
+            // Engineering margin is ten-fold our guess.
+            timeout_ms += 10 * (readable_size + worst_write_perf) / worst_write_perf;
+        }
     }
     return timeout_ms > MINIMUM_LOGCAT_TIMEOUT_MS ? timeout_ms : MINIMUM_LOGCAT_TIMEOUT_MS;
 }
@@ -1369,8 +1380,7 @@
         RunCommand("LSMOD", {"lsmod"});
     }
 
-    if (__android_logger_property_get_bool(
-            "ro.logd.kernel", BOOL_DEFAULT_TRUE | BOOL_DEFAULT_FLAG_ENG | BOOL_DEFAULT_FLAG_SVELTE)) {
+    if (android::base::GetBoolProperty("ro.logd.kernel", false)) {
         DoKernelLogcat();
     } else {
         do_dmesg();
diff --git a/cmds/installd/OWNERS b/cmds/installd/OWNERS
index 9a21104..fc745d0 100644
--- a/cmds/installd/OWNERS
+++ b/cmds/installd/OWNERS
@@ -1,6 +1,5 @@
 set noparent
 
-agampe@google.com
 calin@google.com
 jsharkey@android.com
 maco@google.com
diff --git a/cmds/installd/otapreopt.cpp b/cmds/installd/otapreopt.cpp
index 18f8268..9c75781 100644
--- a/cmds/installd/otapreopt.cpp
+++ b/cmds/installd/otapreopt.cpp
@@ -96,7 +96,7 @@
 
 template<typename T>
 static constexpr T RoundDown(T x, typename std::decay<T>::type n) {
-    return DCHECK_CONSTEXPR(IsPowerOfTwo(n), , T(0))(x & -n);
+    return (x & -n);
 }
 
 template<typename T>
@@ -523,6 +523,7 @@
     // Choose a random relocation offset. Taken from art/runtime/gc/image_space.cc.
     static int32_t ChooseRelocationOffsetDelta(int32_t min_delta, int32_t max_delta) {
         constexpr size_t kPageSize = PAGE_SIZE;
+        static_assert(IsPowerOfTwo(kPageSize), "page size must be power of two");
         CHECK_EQ(min_delta % kPageSize, 0u);
         CHECK_EQ(max_delta % kPageSize, 0u);
         CHECK_LT(min_delta, max_delta);
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index 44f2b38..6e45203 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -127,6 +127,10 @@
         export_aidl_headers: true,
     },
 
+    // TODO(b/142684679): for com.android.media which is compiled
+    // as vendor and used as system code.
+    use_apex_name_macro: true,
+
     cflags: [
         "-Wall",
         "-Wextra",
diff --git a/libs/binder/BpBinder.cpp b/libs/binder/BpBinder.cpp
index d2b9b8f..c183d29 100644
--- a/libs/binder/BpBinder.cpp
+++ b/libs/binder/BpBinder.cpp
@@ -224,7 +224,7 @@
             using android::internal::Stability;
 
             auto stability = Stability::get(this);
-            auto required = privateVendor ? Stability::VENDOR : Stability::kLocalStability;
+            auto required = privateVendor ? Stability::VENDOR : Stability::getLocalStability();
 
             if (CC_UNLIKELY(!Stability::check(stability, required))) {
                 ALOGE("Cannot do a user transaction on a %s binder in a %s context.",
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index d67ce15..157538e 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -614,7 +614,7 @@
     talkWithDriver(false);
 }
 
-int IPCThreadState::setupPolling(int* fd)
+status_t IPCThreadState::setupPolling(int* fd)
 {
     if (mProcess->mDriverFD < 0) {
         return -EBADF;
diff --git a/libs/binder/Stability.cpp b/libs/binder/Stability.cpp
index e1565fa..6115aec 100644
--- a/libs/binder/Stability.cpp
+++ b/libs/binder/Stability.cpp
@@ -22,7 +22,7 @@
 namespace internal {
 
 void Stability::markCompilationUnit(IBinder* binder) {
-    status_t result = set(binder, kLocalStability, true /*log*/);
+    status_t result = set(binder, getLocalStability(), true /*log*/);
     LOG_ALWAYS_FATAL_IF(result != OK, "Should only mark known object.");
 }
 
@@ -45,7 +45,26 @@
 }
 
 void Stability::tryMarkCompilationUnit(IBinder* binder) {
-    (void) set(binder, kLocalStability, false /*log*/);
+    (void) set(binder, getLocalStability(), false /*log*/);
+}
+
+Stability::Level Stability::getLocalStability() {
+#ifdef __ANDROID_VNDK__
+    #ifdef __ANDROID_APEX__
+        // TODO(b/142684679) avoid use_vendor on system APEXes
+        #if !defined(__ANDROID_APEX_COM_ANDROID_MEDIA_SWCODEC__) \
+            && !defined(__ANDROID_APEX_TEST_COM_ANDROID_MEDIA_SWCODEC__)
+        #error VNDK + APEX only defined for com.android.media.swcodec
+        #endif
+        // TODO(b/142684679) avoid use_vendor on system APEXes
+        return Level::SYSTEM;
+    #else
+        return Level::VENDOR;
+    #endif
+#else
+    // TODO(b/139325195): split up stability levels for system/APEX.
+    return Level::SYSTEM;
+#endif
 }
 
 status_t Stability::set(IBinder* binder, int32_t stability, bool log) {
diff --git a/libs/binder/include/binder/IPCThreadState.h b/libs/binder/include/binder/IPCThreadState.h
index 8d51cdc..2bd39a7 100644
--- a/libs/binder/include/binder/IPCThreadState.h
+++ b/libs/binder/include/binder/IPCThreadState.h
@@ -85,8 +85,8 @@
             int64_t             clearCallingIdentity();
             // Restores PID/UID (not SID)
             void                restoreCallingIdentity(int64_t token);
-            
-            int                 setupPolling(int* fd);
+
+            status_t            setupPolling(int* fd);
             status_t            handlePolledCommands();
             void                flushCommands();
 
diff --git a/libs/binder/include/binder/Stability.h b/libs/binder/include/binder/Stability.h
index 2894482..6566285 100644
--- a/libs/binder/include/binder/Stability.h
+++ b/libs/binder/include/binder/Stability.h
@@ -81,11 +81,8 @@
         VINTF = 0b111111,
     };
 
-#if defined(__ANDROID_VNDK__) && !defined(__ANDROID_APEX__)
-    static constexpr Level kLocalStability = Level::VENDOR;
-#else
-    static constexpr Level kLocalStability = Level::SYSTEM;
-#endif
+    // returns the stability according to how this was built
+    static Level getLocalStability();
 
     // applies stability to binder if stability level is known
     __attribute__((warn_unused_result))
diff --git a/libs/binder/ndk/include_cpp/android/binder_auto_utils.h b/libs/binder/ndk/include_cpp/android/binder_auto_utils.h
index 2b61cf1..f59bb75 100644
--- a/libs/binder/ndk/include_cpp/android/binder_auto_utils.h
+++ b/libs/binder/ndk/include_cpp/android/binder_auto_utils.h
@@ -189,6 +189,7 @@
     explicit ScopedAParcel(AParcel* a = nullptr) : ScopedAResource(a) {}
     ~ScopedAParcel() {}
     ScopedAParcel(ScopedAParcel&&) = default;
+    ScopedAParcel& operator=(ScopedAParcel&&) = default;
 };
 
 /**
@@ -273,6 +274,7 @@
         : ScopedAResource(a) {}
     ~ScopedAIBinder_DeathRecipient() {}
     ScopedAIBinder_DeathRecipient(ScopedAIBinder_DeathRecipient&&) = default;
+    ScopedAIBinder_DeathRecipient& operator=(ScopedAIBinder_DeathRecipient&&) = default;
 };
 
 /**
@@ -287,6 +289,7 @@
     explicit ScopedAIBinder_Weak(AIBinder_Weak* a = nullptr) : ScopedAResource(a) {}
     ~ScopedAIBinder_Weak() {}
     ScopedAIBinder_Weak(ScopedAIBinder_Weak&&) = default;
+    ScopedAIBinder_Weak& operator=(ScopedAIBinder_Weak&&) = default;
 
     /**
      * See AIBinder_Weak_promote.
@@ -305,6 +308,7 @@
     explicit ScopedFileDescriptor(int a = -1) : ScopedAResource(a) {}
     ~ScopedFileDescriptor() {}
     ScopedFileDescriptor(ScopedFileDescriptor&&) = default;
+    ScopedFileDescriptor& operator=(ScopedFileDescriptor&&) = default;
 };
 
 }  // namespace ndk
diff --git a/libs/binder/ndk/include_platform/android/binder_process.h b/libs/binder/ndk/include_platform/android/binder_process.h
index fdefbb4..f408fad 100644
--- a/libs/binder/ndk/include_platform/android/binder_process.h
+++ b/libs/binder/ndk/include_platform/android/binder_process.h
@@ -19,10 +19,15 @@
 #include <stdint.h>
 #include <sys/cdefs.h>
 
+#include <android/binder_status.h>
+
 __BEGIN_DECLS
 
 /**
  * This creates a threadpool for incoming binder transactions if it has not already been created.
+ *
+ * When using this, it is expected that ABinderProcess_setupPolling and
+ * ABinderProcess_handlePolledCommands are not used.
  */
 void ABinderProcess_startThreadPool();
 /**
@@ -37,4 +42,27 @@
  */
 void ABinderProcess_joinThreadPool();
 
+/**
+ * This gives you an fd to wait on. Whenever data is available on the fd,
+ * ABinderProcess_handlePolledCommands can be called to handle binder queries.
+ * This is expected to be used in a single threaded process which waits on
+ * events from multiple different fds.
+ *
+ * When using this, it is expected ABinderProcess_startThreadPool and
+ * ABinderProcess_joinThreadPool are not used.
+ *
+ * \param fd out param corresponding to the binder domain opened in this
+ * process.
+ * \return STATUS_OK on success
+ */
+__attribute__((weak)) binder_status_t ABinderProcess_setupPolling(int* fd) __INTRODUCED_IN(31);
+
+/**
+ * This will handle all queued binder commands in this process and then return.
+ * It is expected to be called whenever there is data on the fd.
+ *
+ * \return STATUS_OK on success
+ */
+__attribute__((weak)) binder_status_t ABinderProcess_handlePolledCommands() __INTRODUCED_IN(31);
+
 __END_DECLS
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 9b5fa26..d435382 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -113,6 +113,8 @@
 
 LIBBINDER_NDK31 { # introduced=31
   global:
+    ABinderProcess_handlePolledCommands; # apex
+    ABinderProcess_setupPolling; # apex
     AIBinder_getCallingSid; # apex
     AIBinder_setRequestingSid; # apex
 };
diff --git a/libs/binder/ndk/process.cpp b/libs/binder/ndk/process.cpp
index c89caaf..ac582a4 100644
--- a/libs/binder/ndk/process.cpp
+++ b/libs/binder/ndk/process.cpp
@@ -34,3 +34,11 @@
 void ABinderProcess_joinThreadPool() {
     IPCThreadState::self()->joinThreadPool();
 }
+
+binder_status_t ABinderProcess_setupPolling(int* fd) {
+    return IPCThreadState::self()->setupPolling(fd);
+}
+
+binder_status_t ABinderProcess_handlePolledCommands() {
+    return IPCThreadState::self()->handlePolledCommands();
+}
diff --git a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
index e3fdb4b..9b2fcf0 100644
--- a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
+++ b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
@@ -24,6 +24,7 @@
 #include <android/binder_process.h>
 #include <gtest/gtest.h>
 #include <iface/iface.h>
+#include <utils/Looper.h>
 
 // warning: this is assuming that libbinder_ndk is using the same copy
 // of libbinder that we are.
@@ -107,19 +108,39 @@
     }
 };
 
-int manualService(const char* instance) {
-    ABinderProcess_setThreadPoolMaxThreadCount(0);
-
+void manualService(const char* instance) {
     // Strong reference to MyFoo kept by service manager.
     binder_status_t status = (new MyFoo)->addService(instance);
 
     if (status != STATUS_OK) {
         LOG(FATAL) << "Could not register: " << status << " " << instance;
     }
+}
+int manualPollingService(const char* instance) {
+    int fd;
+    CHECK(STATUS_OK == ABinderProcess_setupPolling(&fd));
+    manualService(instance);
 
+    class Handler : public LooperCallback {
+        int handleEvent(int /*fd*/, int /*events*/, void* /*data*/) override {
+            ABinderProcess_handlePolledCommands();
+            return 1;  // Continue receiving callbacks.
+        }
+    };
+
+    sp<Looper> looper = Looper::prepare(0 /* opts */);
+    looper->addFd(fd, Looper::POLL_CALLBACK, Looper::EVENT_INPUT, new Handler(), nullptr /*data*/);
+    // normally, would add additional fds
+    while (true) {
+        looper->pollAll(-1 /* timeoutMillis */);
+    }
+    return 1;  // should not reach
+}
+int manualThreadPoolService(const char* instance) {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    manualService(instance);
     ABinderProcess_joinThreadPool();
-
-    return 1;  // should not return
+    return 1;
 }
 
 // This is too slow
@@ -448,11 +469,11 @@
 
     if (fork() == 0) {
         prctl(PR_SET_PDEATHSIG, SIGHUP);
-        return manualService(IFoo::kInstanceNameToDieFor);
+        return manualThreadPoolService(IFoo::kInstanceNameToDieFor);
     }
     if (fork() == 0) {
         prctl(PR_SET_PDEATHSIG, SIGHUP);
-        return manualService(IFoo::kSomeInstanceName);
+        return manualPollingService(IFoo::kSomeInstanceName);
     }
     if (fork() == 0) {
         prctl(PR_SET_PDEATHSIG, SIGHUP);
diff --git a/libs/vr/libdvr/tests/dvr_display_manager-test.cpp b/libs/vr/libdvr/tests/dvr_display_manager-test.cpp
index 7b3717e..07e2121 100644
--- a/libs/vr/libdvr/tests/dvr_display_manager-test.cpp
+++ b/libs/vr/libdvr/tests/dvr_display_manager-test.cpp
@@ -308,14 +308,6 @@
 class DvrDisplayManagerTest : public Test {
  protected:
   void SetUp() override {
-    // dvr display manager test doesn't apply to standalone vr devices because
-    // tests cannot create display manager client on these devices.
-    if (property_get_bool("ro.boot.vr", false)) {
-      GTEST_SKIP()
-          << "All tests in DvrDisplayManagerTest test case are skipped "
-             "because the device boot to VR.";
-    }
-
     int ret;
     DvrDisplayManager* display_manager;
     DvrSurfaceState* surface_state;
diff --git a/libs/vr/libvrflinger/hardware_composer.cpp b/libs/vr/libvrflinger/hardware_composer.cpp
index e1240d6..57a77cf 100644
--- a/libs/vr/libvrflinger/hardware_composer.cpp
+++ b/libs/vr/libvrflinger/hardware_composer.cpp
@@ -47,7 +47,6 @@
 namespace {
 
 const char kDvrPerformanceProperty[] = "sys.dvr.performance";
-const char kDvrStandaloneProperty[] = "ro.boot.vr";
 
 const char kRightEyeOffsetProperty[] = "dvr.right_eye_offset_ns";
 
@@ -147,8 +146,6 @@
     return false;
   }
 
-  is_standalone_device_ = property_get_bool(kDvrStandaloneProperty, false);
-
   request_display_callback_ = request_display_callback;
 
   primary_display_ = GetDisplayParams(composer, primary_display_id, true);
@@ -192,8 +189,6 @@
     return;
   boot_finished_ = true;
   post_thread_wait_.notify_one();
-  if (is_standalone_device_)
-    request_display_callback_(true);
 }
 
 // Update the post thread quiescent state based on idle and suspended inputs.
@@ -253,17 +248,11 @@
   layers_.clear();
 
   // Phones create a new composer client on resume and destroy it on pause.
-  // Standalones only create the composer client once and then use SetPowerMode
-  // to control the screen on pause/resume.
-  if (!is_standalone_device_) {
-    if (composer_callback_ != nullptr) {
-      composer_callback_->SetVsyncService(nullptr);
-      composer_callback_ = nullptr;
-    }
-    composer_.reset(nullptr);
-  } else {
-    EnableDisplay(*target_display_, false);
+  if (composer_callback_ != nullptr) {
+    composer_callback_->SetVsyncService(nullptr);
+    composer_callback_ = nullptr;
   }
+  composer_.reset(nullptr);
 
   // Trigger target-specific performance mode change.
   property_set(kDvrPerformanceProperty, "idle");
@@ -574,7 +563,7 @@
     surfaces_changed_ = true;
   }
 
-  if (request_display_callback_ && !is_standalone_device_)
+  if (request_display_callback_)
     request_display_callback_(!display_idle);
 
   // Set idle state based on whether there are any surfaces to handle.
@@ -759,28 +748,6 @@
 
   VsyncEyeOffsets vsync_eye_offsets = get_vsync_eye_offsets();
 
-  if (is_standalone_device_) {
-    // First, wait until boot finishes.
-    std::unique_lock<std::mutex> lock(post_thread_mutex_);
-    if (PostThreadCondWait(lock, -1, [this] { return boot_finished_; })) {
-      return;
-    }
-
-    // Then, wait until we're either leaving the quiescent state, or the boot
-    // finished display off timeout expires.
-    if (PostThreadCondWait(lock, kBootFinishedDisplayOffTimeoutSec,
-                           [this] { return !post_thread_quiescent_; })) {
-      return;
-    }
-
-    LOG_ALWAYS_FATAL_IF(post_thread_state_ & PostThreadState::Suspended,
-                        "Vr flinger should own the display by now.");
-    post_thread_resumed_ = true;
-    post_thread_ready_.notify_all();
-    if (!composer_)
-      CreateComposer();
-  }
-
   while (1) {
     ATRACE_NAME("HardwareComposer::PostThread");
 
diff --git a/libs/vr/libvrflinger/tests/vrflinger_test.cpp b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
index 7075e88..3b449f2 100644
--- a/libs/vr/libvrflinger/tests/vrflinger_test.cpp
+++ b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
@@ -42,9 +42,6 @@
 // completed.
 constexpr auto kVrFlingerSwitchPollInterval = std::chrono::milliseconds(50);
 
-// How long to wait for a device that boots to VR to have vr flinger ready.
-constexpr auto kBootVrFlingerWaitTimeout = std::chrono::seconds(30);
-
 // A Binder connection to surface flinger.
 class SurfaceFlingerConnection {
  public:
@@ -154,11 +151,6 @@
     return;
   }
 
-  // This test doesn't apply to standalone vr devices.
-  if (property_get_bool("ro.boot.vr", false)) {
-    return;
-  }
-
   auto surface_flinger_connection = SurfaceFlingerConnection::Create();
   ASSERT_NE(surface_flinger_connection, nullptr);
 
@@ -231,31 +223,5 @@
       SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
 }
 
-// This test runs only on devices that boot to vr. Such a device should boot to
-// a state where vr flinger is running, and the test verifies this after a
-// delay.
-TEST(BootVrFlingerTest, BootsToVrFlinger) {
-  // Exit if we are not running on a device that boots to vr.
-  if (!property_get_bool("ro.boot.vr", false)) {
-    return;
-  }
-
-  auto surface_flinger_connection = SurfaceFlingerConnection::Create();
-  ASSERT_NE(surface_flinger_connection, nullptr);
-
-  // Verify that vr flinger is enabled.
-  ASSERT_TRUE(surface_flinger_connection->IsAlive());
-  auto vr_flinger_active = surface_flinger_connection->IsVrFlingerActive();
-  ASSERT_TRUE(vr_flinger_active.has_value());
-
-  bool active_value = vr_flinger_active.value();
-  if (!active_value) {
-    // Try again, but delay up to 30 seconds.
-    ASSERT_EQ(surface_flinger_connection->WaitForVrFlingerTimed(true,
-        kVrFlingerSwitchPollInterval, kBootVrFlingerWaitTimeout),
-        SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
-  }
-}
-
 }  // namespace dvr
 }  // namespace android
diff --git a/opengl/libs/EGL/BlobCache.cpp b/opengl/libs/EGL/BlobCache.cpp
index 74c4d7d..089e28c 100644
--- a/opengl/libs/EGL/BlobCache.cpp
+++ b/opengl/libs/EGL/BlobCache.cpp
@@ -78,12 +78,12 @@
         return;
     }
 
-    std::shared_ptr<Blob> dummyKey(new Blob(key, keySize, false));
-    CacheEntry dummyEntry(dummyKey, nullptr);
+    std::shared_ptr<Blob> cacheKey(new Blob(key, keySize, false));
+    CacheEntry cacheEntry(cacheKey, nullptr);
 
     while (true) {
-        auto index = std::lower_bound(mCacheEntries.begin(), mCacheEntries.end(), dummyEntry);
-        if (index == mCacheEntries.end() || dummyEntry < *index) {
+        auto index = std::lower_bound(mCacheEntries.begin(), mCacheEntries.end(), cacheEntry);
+        if (index == mCacheEntries.end() || cacheEntry < *index) {
             // Create a new cache entry.
             std::shared_ptr<Blob> keyBlob(new Blob(key, keySize, true));
             std::shared_ptr<Blob> valueBlob(new Blob(value, valueSize, true));
@@ -138,10 +138,10 @@
                 keySize, mMaxKeySize);
         return 0;
     }
-    std::shared_ptr<Blob> dummyKey(new Blob(key, keySize, false));
-    CacheEntry dummyEntry(dummyKey, nullptr);
-    auto index = std::lower_bound(mCacheEntries.begin(), mCacheEntries.end(), dummyEntry);
-    if (index == mCacheEntries.end() || dummyEntry < *index) {
+    std::shared_ptr<Blob> cacheKey(new Blob(key, keySize, false));
+    CacheEntry cacheEntry(cacheKey, nullptr);
+    auto index = std::lower_bound(mCacheEntries.begin(), mCacheEntries.end(), cacheEntry);
+    if (index == mCacheEntries.end() || cacheEntry < *index) {
         ALOGV("get: no cache entry found for key of size %zu", keySize);
         return 0;
     }
diff --git a/opengl/libs/EGL/FileBlobCache.cpp b/opengl/libs/EGL/FileBlobCache.cpp
index 3284778..751f3be 100644
--- a/opengl/libs/EGL/FileBlobCache.cpp
+++ b/opengl/libs/EGL/FileBlobCache.cpp
@@ -70,7 +70,7 @@
             return;
         }
 
-        // Sanity check the size before trying to mmap it.
+        // Check the size before trying to mmap it.
         size_t fileSize = statBuf.st_size;
         if (fileSize > mMaxTotalSize * 2) {
             ALOGE("cache file is too large: %#" PRIx64,
diff --git a/opengl/tests/EGLTest/EGL_test.cpp b/opengl/tests/EGLTest/EGL_test.cpp
index cca91c3..a98263d 100644
--- a/opengl/tests/EGLTest/EGL_test.cpp
+++ b/opengl/tests/EGLTest/EGL_test.cpp
@@ -139,7 +139,7 @@
     };
     EXPECT_TRUE(eglChooseConfig(mEglDisplay, attrs, &config, 1, &numConfigs));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -149,7 +149,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -259,7 +259,7 @@
     EXPECT_EQ(components[2], 8);
     EXPECT_EQ(components[3], 8);
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -269,7 +269,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
     EGLint winAttrs[] = {
@@ -307,7 +307,7 @@
 
     get8BitConfig(config);
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -317,7 +317,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
     EGLint winAttrs[] = {
@@ -399,7 +399,7 @@
     EXPECT_EQ(components[2], 10);
     EXPECT_EQ(components[3], 2);
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -409,7 +409,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
     EGLint winAttrs[] = {
@@ -571,7 +571,7 @@
 
     ASSERT_NO_FATAL_FAILURE(get8BitConfig(config));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -581,7 +581,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -623,7 +623,7 @@
 
     ASSERT_NO_FATAL_FAILURE(get8BitConfig(config));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -633,7 +633,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
     std::vector<EGLint> winAttrs;
@@ -706,7 +706,7 @@
     EXPECT_GE(components[2], 16);
     EXPECT_GE(components[3], 16);
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -715,7 +715,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -735,7 +735,7 @@
 
     ASSERT_TRUE(hasEglExtension(mEglDisplay, "EGL_KHR_no_config_context"));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -810,7 +810,7 @@
     EXPECT_EQ(components[2], 10);
     EXPECT_EQ(components[3], 2);
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -820,7 +820,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -836,7 +836,7 @@
 
     ASSERT_NO_FATAL_FAILURE(get8BitConfig(config));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -846,7 +846,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -883,7 +883,7 @@
     ASSERT_EQ(EGL_UNSIGNED_TRUE, success);
     ASSERT_EQ(1, numConfigs);
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -893,7 +893,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -914,7 +914,7 @@
 
     ASSERT_NO_FATAL_FAILURE(get8BitConfig(config));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -924,7 +924,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
@@ -954,7 +954,7 @@
 
     ASSERT_NO_FATAL_FAILURE(get8BitConfig(config));
 
-    struct DummyConsumer : public BnConsumerListener {
+    struct MockConsumer : public BnConsumerListener {
         void onFrameAvailable(const BufferItem& /* item */) override {}
         void onBuffersReleased() override {}
         void onSidebandStreamChanged() override {}
@@ -964,7 +964,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    consumer->consumerConnect(new DummyConsumer, false);
+    consumer->consumerConnect(new MockConsumer, false);
     sp<Surface> mSTC = new Surface(producer);
     sp<ANativeWindow> mANW = mSTC;
 
diff --git a/opengl/tools/glgen/gen b/opengl/tools/glgen/gen
index 9efd38f..7fd9c3a 100755
--- a/opengl/tools/glgen/gen
+++ b/opengl/tools/glgen/gen
@@ -17,7 +17,7 @@
 
 mkdir out
 
-# Create dummy Java files for Android APIs that are used by the code we generate.
+# Create stub Java files for Android APIs that are used by the code we generate.
 # This allows us to test the generated code without building the rest of Android.
 
 mkdir -p out/javax/microedition/khronos/opengles
diff --git a/services/surfaceflinger/Scheduler/DispSync.cpp b/services/surfaceflinger/Scheduler/DispSync.cpp
index 0c94052..04b5241 100644
--- a/services/surfaceflinger/Scheduler/DispSync.cpp
+++ b/services/surfaceflinger/Scheduler/DispSync.cpp
@@ -331,7 +331,7 @@
         return nextEventTime;
     }
 
-    // Sanity check that the duration is close enough in length to a period without
+    // Check that the duration is close enough in length to a period without
     // falling into double-rate vsyncs.
     bool isCloseToPeriod(nsecs_t duration) {
         // Ratio of 3/5 is arbitrary, but it must be greater than 1/2.
diff --git a/services/surfaceflinger/Scheduler/DispSync.h b/services/surfaceflinger/Scheduler/DispSync.h
index 3e33c7e..0822266 100644
--- a/services/surfaceflinger/Scheduler/DispSync.h
+++ b/services/surfaceflinger/Scheduler/DispSync.h
@@ -233,7 +233,7 @@
 
     // mZeroErrSamplesCount keeps track of how many times in a row there were
     // zero timestamps available in the mPresentFences array.
-    // Used to sanity check that we are able to calculate the model error.
+    // Used to check that we are able to calculate the model error.
     size_t mZeroErrSamplesCount;
 
     // Whether we have updated the vsync event model since the last resync.