update_engine: Send UMA stats about kernel key versions
Adding the following UMA stats:
- UpdateEngine.KernelKey.MinVersion: Minimum kernel key version
already set in the TPM.
- UpdateEngine.KernelKey.MaxRollforwardVersion: Maximum kernel key
rollforward version set by update_engine.
- UpdateEngine.KernelKey.MaxRollforwardSetSuccess: Whether setting
the maximum kernely key rollforward version succeeded.
Chromium CL of the new histograms: crrev.com/c/1078750
BUG=chromium:843622
TEST='cros_run_unit_tests --board=caroline --packages update_engine'
Change-Id: I14192b5ff9c07f8a003e0589450202f488cccc01
Reviewed-on: https://chromium-review.googlesource.com/1078968
Commit-Ready: Zentaro Kavanagh <zentaro@chromium.org>
Tested-by: Zentaro Kavanagh <zentaro@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
diff --git a/metrics_reporter_android.h b/metrics_reporter_android.h
index 06ad8c5..847e509 100644
--- a/metrics_reporter_android.h
+++ b/metrics_reporter_android.h
@@ -86,6 +86,10 @@
void ReportInternalErrorCode(ErrorCode error_code) override {}
+ void ReportKeyVersionMetrics(int kernel_min_version,
+ int kernel_max_rollforward_version,
+ bool kernel_max_rollforward_success) override {}
+
private:
DISALLOW_COPY_AND_ASSIGN(MetricsReporterAndroid);
};