Add atrace HAL 1.0
Bug: 111098596
Test: vts, atrace and systrace
(cherry picked from commit db895ad8da1008082521146eac3647907a56a2b1)
Change-Id: Iea4ee4bff7509031a6daaf7c9570d0583a59affa
diff --git a/atrace/1.0/default/AtraceDevice.cpp b/atrace/1.0/default/AtraceDevice.cpp
new file mode 100644
index 0000000..43bcd9a
--- /dev/null
+++ b/atrace/1.0/default/AtraceDevice.cpp
@@ -0,0 +1,110 @@
+/*
+ * 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 <android-base/file.h>
+#include <android-base/logging.h>
+
+#include "AtraceDevice.h"
+
+namespace android {
+namespace hardware {
+namespace atrace {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::atrace::V1_0::Status;
+using ::android::hardware::atrace::V1_0::TracingCategory;
+
+struct TracingConfig {
+ std::string description;
+ std::vector<std::pair<std::string, bool>> paths;
+};
+
+// This is a map stores categories and their sysfs paths with required flags
+const std::map<std::string, TracingConfig> kTracingMap = {
+ // gfx
+ {
+ "gfx",
+ {"Graphics",
+ {{"/sys/kernel/debug/tracing/events/mdss/enable", false},
+ {"/sys/kernel/debug/tracing/events/sde/enable", false},
+ {"/sys/kernel/debug/tracing/events/mali_systrace/enable", false}}},
+ },
+ {
+ "ion",
+ {"ION allocation",
+ {{"/sys/kernel/debug/tracing/events/kmem/ion_alloc_buffer_start/enable", true}}},
+ },
+};
+
+// Methods from ::android::hardware::atrace::V1_0::IAtraceDevice follow.
+Return<void> AtraceDevice::listCategories(listCategories_cb _hidl_cb) {
+ hidl_vec<TracingCategory> categories;
+ categories.resize(kTracingMap.size());
+ std::size_t i = 0;
+ for (auto& c : kTracingMap) {
+ categories[i].name = c.first;
+ categories[i].description = c.second.description;
+ i++;
+ }
+ _hidl_cb(categories);
+ return Void();
+}
+
+Return<::android::hardware::atrace::V1_0::Status> AtraceDevice::enableCategories(
+ const hidl_vec<hidl_string>& categories) {
+ if (!categories.size()) {
+ return Status::ERROR_INVALID_ARGUMENT;
+ }
+ for (auto& c : categories) {
+ if (kTracingMap.count(c)) {
+ for (auto& p : kTracingMap.at(c).paths) {
+ if (!android::base::WriteStringToFile("1", p.first)) {
+ LOG(ERROR) << "Failed to enable tracing on: " << p.first;
+ if (p.second) {
+ // disable before return
+ disableAllCategories();
+ return Status::ERROR_TRACING_POINT;
+ }
+ }
+ }
+ } else {
+ return Status::ERROR_INVALID_ARGUMENT;
+ }
+ }
+ return Status::SUCCESS;
+}
+
+Return<::android::hardware::atrace::V1_0::Status> AtraceDevice::disableAllCategories() {
+ auto ret = Status::SUCCESS;
+ for (auto& c : kTracingMap) {
+ for (auto& p : c.second.paths) {
+ if (!android::base::WriteStringToFile("0", p.first)) {
+ LOG(ERROR) << "Failed to enable tracing on: " << p.first;
+ if (p.second) {
+ ret = Status::ERROR_TRACING_POINT;
+ }
+ }
+ }
+ }
+ return ret;
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace atrace
+} // namespace hardware
+} // namespace android