From f7eb401770b7d6492a5f4914e6cdf27602a28add Mon Sep 17 00:00:00 2001
From: Rafal Slawik <rslawik@google.com>
Date: Wed, 8 Feb 2023 13:49:26 +0000
Subject: [PATCH] Add counter metrics for tracking failures

Test: build
Bug: 268323312
Change-Id: I7d0f7348c271390f6cbbb07be2d72365d91cd018
---
 .../internal/os/KernelSingleProcessCpuThreadReader.java   | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/core/java/com/android/internal/os/KernelSingleProcessCpuThreadReader.java b/core/java/com/android/internal/os/KernelSingleProcessCpuThreadReader.java
index 4d2a08a4bcf35..e2c096c11feed 100644
--- a/core/java/com/android/internal/os/KernelSingleProcessCpuThreadReader.java
+++ b/core/java/com/android/internal/os/KernelSingleProcessCpuThreadReader.java
@@ -20,6 +20,7 @@ import android.annotation.Nullable;
 import android.util.Slog;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.expresslog.Counter;
 
 import java.io.IOException;
 import java.util.Arrays;
@@ -117,13 +118,16 @@ public class KernelSingleProcessCpuThreadReader {
     public void startTrackingThreadCpuTimes() {
         if (!mIsTracking) {
             if (!startTrackingProcessCpuTimes(mPid, mCpuTimeInStateReader)) {
-                Slog.e(TAG, "Failed to start tracking process CPU times for " + mPid);
+                Slog.wtf(TAG, "Failed to start tracking process CPU times for " + mPid);
+                Counter.logIncrement("cpu.value_process_tracking_start_failure_count");
             }
             if (mSelectedThreadNativeTids.length > 0) {
                 if (!startAggregatingThreadCpuTimes(mSelectedThreadNativeTids,
                         mCpuTimeInStateReader)) {
-                    Slog.e(TAG, "Failed to start tracking aggregated thread CPU times for "
+                    Slog.wtf(TAG, "Failed to start tracking aggregated thread CPU times for "
                             + Arrays.toString(mSelectedThreadNativeTids));
+                    Counter.logIncrement(
+                            "cpu.value_aggregated_thread_tracking_start_failure_count");
                 }
             }
             mIsTracking = true;