SF: fix threads name

Some of SF's threads are using a too long name which cause
pthread_setname_np to fail.

Fixes: 183128214
Test: systrace
Change-Id: I473342857bfa0642f99c8910020114ae37559cbb
diff --git a/libs/renderengine/threaded/RenderEngineThreaded.h b/libs/renderengine/threaded/RenderEngineThreaded.h
index df0551d..7694328 100644
--- a/libs/renderengine/threaded/RenderEngineThreaded.h
+++ b/libs/renderengine/threaded/RenderEngineThreaded.h
@@ -73,7 +73,7 @@
     /* ------------------------------------------------------------------------
      * Threading
      */
-    const char* const mThreadName = "RenderEngineThread";
+    const char* const mThreadName = "RenderEngine";
     // Protects the creation and destruction of mThread.
     mutable std::mutex mThreadMutex;
     std::thread mThread GUARDED_BY(mThreadMutex);
diff --git a/services/surfaceflinger/RegionSamplingThread.cpp b/services/surfaceflinger/RegionSamplingThread.cpp
index e06bc88..d0032ac 100644
--- a/services/surfaceflinger/RegionSamplingThread.cpp
+++ b/services/surfaceflinger/RegionSamplingThread.cpp
@@ -176,7 +176,7 @@
         mScheduler(scheduler),
         mTunables(tunables),
         mIdleTimer(
-                "RegionSamplingIdleTimer",
+                "RegSampIdle",
                 std::chrono::duration_cast<std::chrono::milliseconds>(
                         mTunables.mSamplingTimerTimeout),
                 [] {}, [this] { checkForStaleLuma(); }),
@@ -184,7 +184,7 @@
                                                                 tunables.mSamplingDuration)),
         lastSampleTime(0ns) {
     mThread = std::thread([this]() { threadMain(); });
-    pthread_setname_np(mThread.native_handle(), "RegionSamplingThread");
+    pthread_setname_np(mThread.native_handle(), "RegionSampling");
     mIdleTimer.start();
 }