ART: Log all monitor operations to systrace

Add a VLOG option ("-verbose:systrace-locks") to log all monitor
operations to systrace. This requires non-fastpath thread
entrypoints, and ATRACE tags for locking and unlocking.

Do a bit of cleanup to the entrypoint initialization to share
common setup.

Bug: 28423466

(cherry picked from commit fc6898769ae1ef91ec3e41c0a273401213cb82cd)

Change-Id: Ie67e4aa946ec15f8fcf8cb7134c5d3cff0119ab3
diff --git a/runtime/arch/mips/entrypoints_init_mips.cc b/runtime/arch/mips/entrypoints_init_mips.cc
index 51eb77f..45e33a8 100644
--- a/runtime/arch/mips/entrypoints_init_mips.cc
+++ b/runtime/arch/mips/entrypoints_init_mips.cc
@@ -59,6 +59,9 @@
 extern "C" int64_t __moddi3(int64_t, int64_t);
 
 void InitEntryPoints(JniEntryPoints* jpoints, QuickEntryPoints* qpoints) {
+  // Note: MIPS has asserts checking for the type of entrypoint. Don't move it
+  //       to InitDefaultEntryPoints().
+
   // JNI
   jpoints->pDlsymLookup = art_jni_dlsym_lookup_stub;
 
@@ -167,9 +170,14 @@
                 "Non-direct C stub marked direct.");
 
   // Locks
-  qpoints->pLockObject = art_quick_lock_object;
+  if (UNLIKELY(VLOG_IS_ON(systrace_lock_logging))) {
+    qpoints->pLockObject = art_quick_lock_object_no_inline;
+    qpoints->pUnlockObject = art_quick_unlock_object_no_inline;
+  } else {
+    qpoints->pLockObject = art_quick_lock_object;
+    qpoints->pUnlockObject = art_quick_unlock_object;
+  }
   static_assert(!IsDirectEntrypoint(kQuickLockObject), "Non-direct C stub marked direct.");
-  qpoints->pUnlockObject = art_quick_unlock_object;
   static_assert(!IsDirectEntrypoint(kQuickUnlockObject), "Non-direct C stub marked direct.");
 
   // Math