SF: add more traces when adding vsync timestamps

Bug: 316224736
Change-Id: I264e728c49f0500f2f868c3a25b0910d0d527340
Test: presubmit
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.cpp b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
index 24737e4..186a2d6 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
@@ -53,6 +53,8 @@
 VSyncReactor::~VSyncReactor() = default;
 
 bool VSyncReactor::addPresentFence(std::shared_ptr<FenceTime> fence) {
+    ATRACE_CALL();
+
     if (!fence) {
         return false;
     }
@@ -64,6 +66,8 @@
 
     std::lock_guard lock(mMutex);
     if (mExternalIgnoreFences || mInternalIgnoreFences) {
+        ATRACE_FORMAT_INSTANT("mExternalIgnoreFences=%d mInternalIgnoreFences=%d",
+            mExternalIgnoreFences, mInternalIgnoreFences);
         return true;
     }