perfetto: add device feature test for checking CPU count
https://android-review.googlesource.com/c/platform/frameworks/native/+/693202
requires that there are no more than 16 CPUs present on a device to
ensure buffers are cleared correctly.
Verify this is the case using a CTS test.
Bug: 79961252
Change-Id: I2223b511668d581407eccd78903c8eb4302c01d3
diff --git a/test/cts/device_feature_test_cts.cc b/test/cts/device_feature_test_cts.cc
new file mode 100644
index 0000000..3664476
--- /dev/null
+++ b/test/cts/device_feature_test_cts.cc
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/sysinfo.h>
+
+#include "gtest/gtest.h"
+
+namespace perfetto {
+
+TEST(PerfettoDeviceFeatureTest, TestMaxCpusForAtraceChmod) {
+ // Check that there are no more than 16 CPUs so that the assumption in the
+ // atrace.rc for clearing CPU buffers is valid.
+ ASSERT_LE(get_nprocs(), 16);
+}
+
+} // namespace perfetto
