diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index f9cc17b..1e134d0 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -264,7 +264,7 @@
     return NULL;
 }
 
-void AudioFlinger::dumpClients(int fd, const Vector<String16>& args)
+void AudioFlinger::dumpClients(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -296,7 +296,7 @@
 }
 
 
-void AudioFlinger::dumpInternals(int fd, const Vector<String16>& args)
+void AudioFlinger::dumpInternals(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -311,7 +311,7 @@
     write(fd, result.string(), result.size());
 }
 
-void AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args)
+void AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -1259,7 +1259,7 @@
 {
 }
 
-void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who)
+void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who __unused)
 {
     sp<NotificationClient> keep(this);
     mAudioFlinger->removeNotificationClient(mPid);
diff --git a/services/audioflinger/AudioPolicyService.cpp b/services/audioflinger/AudioPolicyService.cpp
index 415f696..6a115ff 100644
--- a/services/audioflinger/AudioPolicyService.cpp
+++ b/services/audioflinger/AudioPolicyService.cpp
@@ -613,7 +613,7 @@
     return NO_ERROR;
 }
 
-status_t AudioPolicyService::dump(int fd, const Vector<String16>& args)
+status_t AudioPolicyService::dump(int fd, const Vector<String16>& args __unused)
 {
     if (!dumpAllowed()) {
         dumpPermissionDenial(fd);
@@ -1461,7 +1461,7 @@
 extern "C" {
 
 
-static audio_module_handle_t aps_load_hw_module(void *service,
+static audio_module_handle_t aps_load_hw_module(void *service __unused,
                                              const char *name)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
@@ -1474,7 +1474,7 @@
 }
 
 // deprecated: replaced by aps_open_output_on_module()
-static audio_io_handle_t aps_open_output(void *service,
+static audio_io_handle_t aps_open_output(void *service __unused,
                                          audio_devices_t *pDevices,
                                          uint32_t *pSamplingRate,
                                          audio_format_t *pFormat,
@@ -1492,7 +1492,7 @@
                           pLatencyMs, flags);
 }
 
-static audio_io_handle_t aps_open_output_on_module(void *service,
+static audio_io_handle_t aps_open_output_on_module(void *service __unused,
                                                    audio_module_handle_t module,
                                                    audio_devices_t *pDevices,
                                                    uint32_t *pSamplingRate,
@@ -1511,7 +1511,7 @@
                           pLatencyMs, flags, offloadInfo);
 }
 
-static audio_io_handle_t aps_open_dup_output(void *service,
+static audio_io_handle_t aps_open_dup_output(void *service __unused,
                                                  audio_io_handle_t output1,
                                                  audio_io_handle_t output2)
 {
@@ -1523,7 +1523,7 @@
     return af->openDuplicateOutput(output1, output2);
 }
 
-static int aps_close_output(void *service, audio_io_handle_t output)
+static int aps_close_output(void *service __unused, audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1533,7 +1533,7 @@
     return af->closeOutput(output);
 }
 
-static int aps_suspend_output(void *service, audio_io_handle_t output)
+static int aps_suspend_output(void *service __unused, audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1544,7 +1544,7 @@
     return af->suspendOutput(output);
 }
 
-static int aps_restore_output(void *service, audio_io_handle_t output)
+static int aps_restore_output(void *service __unused, audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1556,12 +1556,12 @@
 }
 
 // deprecated: replaced by aps_open_input_on_module(), and acoustics parameter is ignored
-static audio_io_handle_t aps_open_input(void *service,
+static audio_io_handle_t aps_open_input(void *service __unused,
                                         audio_devices_t *pDevices,
                                         uint32_t *pSamplingRate,
                                         audio_format_t *pFormat,
                                         audio_channel_mask_t *pChannelMask,
-                                        audio_in_acoustics_t acoustics)
+                                        audio_in_acoustics_t acoustics __unused)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1572,7 +1572,7 @@
     return af->openInput((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask);
 }
 
-static audio_io_handle_t aps_open_input_on_module(void *service,
+static audio_io_handle_t aps_open_input_on_module(void *service __unused,
                                                   audio_module_handle_t module,
                                                   audio_devices_t *pDevices,
                                                   uint32_t *pSamplingRate,
@@ -1588,7 +1588,7 @@
     return af->openInput(module, pDevices, pSamplingRate, pFormat, pChannelMask);
 }
 
-static int aps_close_input(void *service, audio_io_handle_t input)
+static int aps_close_input(void *service __unused, audio_io_handle_t input)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1598,7 +1598,7 @@
     return af->closeInput(input);
 }
 
-static int aps_set_stream_output(void *service, audio_stream_type_t stream,
+static int aps_set_stream_output(void *service __unused, audio_stream_type_t stream,
                                      audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
@@ -1609,7 +1609,7 @@
     return af->setStreamOutput(stream, output);
 }
 
-static int aps_move_effects(void *service, int session,
+static int aps_move_effects(void *service __unused, int session,
                                 audio_io_handle_t src_output,
                                 audio_io_handle_t dst_output)
 {
@@ -1621,7 +1621,7 @@
     return af->moveEffects(session, src_output, dst_output);
 }
 
-static char * aps_get_parameters(void *service, audio_io_handle_t io_handle,
+static char * aps_get_parameters(void *service __unused, audio_io_handle_t io_handle,
                                      const char *keys)
 {
     String8 result = AudioSystem::getParameters(io_handle, String8(keys));
diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index 59b4770..537c076 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -805,7 +805,7 @@
     return mOffloaded;
 }
 
-void AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args)
+void AudioFlinger::EffectModule::dump(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 515368c..1f80527 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -185,7 +185,11 @@
 {
 }
 
-void CpuStats::sample(const String8 &title) {
+void CpuStats::sample(const String8 &title
+#ifndef DEBUG_CPU_USAGE
+                __unused
+#endif
+        ) {
 #ifdef DEBUG_CPU_USAGE
     // get current thread's delta CPU time in wall clock ns
     double wcNs;
@@ -421,7 +425,7 @@
     }
 }
 
-void AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args)
+void AudioFlinger::ThreadBase::dumpBase(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -604,7 +608,7 @@
     mPowerManager.clear();
 }
 
-void AudioFlinger::ThreadBase::PMDeathRecipient::binderDied(const wp<IBinder>& who)
+void AudioFlinger::ThreadBase::PMDeathRecipient::binderDied(const wp<IBinder>& who __unused)
 {
     sp<ThreadBase> thread = mThread.promote();
     if (thread != 0) {
@@ -1088,7 +1092,7 @@
     dumpEffectChains(fd, args);
 }
 
-void AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args)
+void AudioFlinger::PlaybackThread::dumpTracks(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -1614,7 +1618,7 @@
 
 // static
 int AudioFlinger::PlaybackThread::asyncCallback(stream_callback_event_t event,
-                                                void *param,
+                                                void *param __unused,
                                                 void *cookie)
 {
     AudioFlinger::PlaybackThread *me = (AudioFlinger::PlaybackThread *)cookie;
@@ -3739,14 +3743,14 @@
 }
 
 // getTrackName_l() must be called with ThreadBase::mLock held
-int AudioFlinger::DirectOutputThread::getTrackName_l(audio_channel_mask_t channelMask,
-        int sessionId)
+int AudioFlinger::DirectOutputThread::getTrackName_l(audio_channel_mask_t channelMask __unused,
+        int sessionId __unused)
 {
     return 0;
 }
 
 // deleteTrackName_l() must be called with ThreadBase::mLock held
-void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name)
+void AudioFlinger::DirectOutputThread::deleteTrackName_l(int name __unused)
 {
 }
 
@@ -5026,12 +5030,12 @@
     return false;
 }
 
-bool AudioFlinger::RecordThread::isValidSyncEvent(const sp<SyncEvent>& event) const
+bool AudioFlinger::RecordThread::isValidSyncEvent(const sp<SyncEvent>& event __unused) const
 {
     return false;
 }
 
-status_t AudioFlinger::RecordThread::setSyncEvent(const sp<SyncEvent>& event)
+status_t AudioFlinger::RecordThread::setSyncEvent(const sp<SyncEvent>& event __unused)
 {
 #if 0   // This branch is currently dead code, but is preserved in case it will be needed in future
     if (!isValidSyncEvent(event)) {
@@ -5109,7 +5113,7 @@
     dumpBase(fd, args);
 }
 
-void AudioFlinger::RecordThread::dumpTracks(int fd, const Vector<String16>& args)
+void AudioFlinger::RecordThread::dumpTracks(int fd, const Vector<String16>& args __unused)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -5142,7 +5146,7 @@
 }
 
 // AudioBufferProvider interface
-status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts)
+status_t AudioFlinger::RecordThread::getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts __unused)
 {
     int32_t rear = mRsmpInRear;
     int32_t front = mRsmpInFront;
@@ -5321,7 +5325,7 @@
     return out_s8;
 }
 
-void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param) {
+void AudioFlinger::RecordThread::audioConfigChanged_l(int event, int param __unused) {
     AudioSystem::OutputDescriptor desc;
     const void *param2 = NULL;
 
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 8df6f94..1745ea1 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -201,13 +201,13 @@
                 // effect
                 void removeEffect_l(const sp< EffectModule>& effect);
                 // detach all tracks connected to an auxiliary effect
-    virtual     void detachAuxEffect_l(int effectId) {}
+    virtual     void detachAuxEffect_l(int effectId __unused) {}
                 // returns either EFFECT_SESSION if effects on this audio session exist in one
                 // chain, or TRACK_SESSION if tracks on this audio session exist, or both
                 virtual uint32_t hasAudioSession(int sessionId) const = 0;
                 // the value returned by default implementation is not important as the
                 // strategy is only meaningful for PlaybackThread which implements this method
-                virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; }
+                virtual uint32_t getStrategyForSession_l(int sessionId __unused) { return 0; }
 
                 // suspend or restore effect according to the type of effect passed. a NULL
                 // type pointer means suspend all effects in the session
@@ -625,7 +625,7 @@
     sp<NBLog::Writer>       mFastMixerNBLogWriter;
 public:
     virtual     bool        hasFastMixer() const = 0;
-    virtual     FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex) const
+    virtual     FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex __unused) const
                                 { FastTrackUnderruns dummy; return dummy; }
 
 protected:
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index d8d7790..ecedca9 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -526,7 +526,7 @@
 
 // AudioBufferProvider interface
 status_t AudioFlinger::PlaybackThread::Track::getNextBuffer(
-        AudioBufferProvider::Buffer* buffer, int64_t pts)
+        AudioBufferProvider::Buffer* buffer, int64_t pts __unused)
 {
     ServerProxy::Buffer buf;
     size_t desiredFrames = buffer->frameCount;
@@ -576,8 +576,8 @@
     return false;
 }
 
-status_t AudioFlinger::PlaybackThread::Track::start(AudioSystem::sync_event_t event,
-                                                    int triggerSession)
+status_t AudioFlinger::PlaybackThread::Track::start(AudioSystem::sync_event_t event __unused,
+                                                    int triggerSession __unused)
 {
     status_t status = NO_ERROR;
     ALOGV("start(%d), calling pid %d session %d",
@@ -1163,7 +1163,7 @@
 
 void AudioFlinger::PlaybackThread::TimedTrack::updateFramesPendingAfterTrim_l(
         const TimedBuffer& buf,
-        const char* logTag) {
+        const char* logTag __unused) {
     uint32_t bufBytes        = buf.buffer()->size();
     uint32_t consumedAlready = buf.position();
 
@@ -1786,7 +1786,7 @@
 
 // AudioBufferProvider interface
 status_t AudioFlinger::RecordThread::RecordTrack::getNextBuffer(AudioBufferProvider::Buffer* buffer,
-        int64_t pts)
+        int64_t pts __unused)
 {
     ServerProxy::Buffer buf;
     buf.mFrameCount = buffer->frameCount;
diff --git a/services/medialog/MediaLogService.cpp b/services/medialog/MediaLogService.cpp
index 683fdf3..0c7fbbd 100644
--- a/services/medialog/MediaLogService.cpp
+++ b/services/medialog/MediaLogService.cpp
@@ -54,7 +54,7 @@
     }
 }
 
-status_t MediaLogService::dump(int fd, const Vector<String16>& args)
+status_t MediaLogService::dump(int fd, const Vector<String16>& args __unused)
 {
     // FIXME merge with similar but not identical code at services/audioflinger/ServiceUtilities.cpp
     static const String16 sDump("android.permission.DUMP");