1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <android-base/logging.h>
18 #include <android-base/stringprintf.h>
19 #include <benchmark/benchmark.h>
20
21 #define BPF_MAP_MAKE_VISIBLE_FOR_TESTING
22 #include "bpf/BpfMap.h"
23
24 constexpr uint32_t TEST_MAP_SIZE = 10000;
25
26 using android::base::Result;
27 using android::base::StringPrintf;
28 using android::bpf::BpfMap;
29
30 class BpfBenchMark : public ::benchmark::Fixture {
31 public:
BpfBenchMark()32 BpfBenchMark() {
33 mBpfTestMap.resetMap(BPF_MAP_TYPE_HASH, TEST_MAP_SIZE, BPF_F_NO_PREALLOC);
34 }
35
36 BpfMap<uint32_t, uint32_t> mBpfTestMap;
37 };
38
BENCHMARK_DEFINE_F(BpfBenchMark,MapWriteNewEntry)39 BENCHMARK_DEFINE_F(BpfBenchMark, MapWriteNewEntry)(benchmark::State& state) {
40 for (auto _ : state) { // NOLINT(clang-analyzer-deadcode.DeadStores)
41 // TODO(b/147676069) assert
42 mBpfTestMap.writeValue(state.range(0), state.range(0), BPF_NOEXIST);
43 }
44 }
45
BENCHMARK_DEFINE_F(BpfBenchMark,MapUpdateEntry)46 BENCHMARK_DEFINE_F(BpfBenchMark, MapUpdateEntry)(benchmark::State& state) {
47 for (uint32_t i = 0; i < TEST_MAP_SIZE; i++) {
48 // TODO(b/147676069) assert
49 mBpfTestMap.writeValue(i, i, BPF_NOEXIST);
50 }
51 for (auto _ : state) { // NOLINT(clang-analyzer-deadcode.DeadStores)
52 // TODO(b/147676069) assert
53 mBpfTestMap.writeValue(state.range(0), state.range(0) + 1, BPF_EXIST);
54 }
55 }
56
BENCHMARK_DEFINE_F(BpfBenchMark,MapDeleteAddEntry)57 BENCHMARK_DEFINE_F(BpfBenchMark, MapDeleteAddEntry)(benchmark::State& state) {
58 for (uint32_t i = 0; i < TEST_MAP_SIZE; i++) {
59 // TODO(b/147676069) assert
60 mBpfTestMap.writeValue(i, i, BPF_NOEXIST);
61 }
62 for (auto _ : state) { // NOLINT(clang-analyzer-deadcode.DeadStores)
63 // TODO(b/147676069) assert
64 mBpfTestMap.deleteValue(state.range(0));
65 // TODO(b/147676069) assert
66 mBpfTestMap.writeValue(state.range(0), state.range(0) + 1, BPF_NOEXIST);
67 }
68 }
69
BENCHMARK_DEFINE_F(BpfBenchMark,WaitForRcu)70 BENCHMARK_DEFINE_F(BpfBenchMark, WaitForRcu)(benchmark::State& state) {
71 for (auto _ : state) { // NOLINT(clang-analyzer-deadcode.DeadStores)
72 int ret = android::bpf::synchronizeKernelRCU();
73 if (ret) {
74 state.SkipWithError(
75 StringPrintf("synchronizeKernelRCU() failed with errno=%d", -ret).c_str());
76 }
77 }
78 }
79
80 namespace {
81 BENCHMARK_REGISTER_F(BpfBenchMark, MapUpdateEntry)->Arg(1);
82 BENCHMARK_REGISTER_F(BpfBenchMark, MapWriteNewEntry)->Arg(1);
83 BENCHMARK_REGISTER_F(BpfBenchMark, MapDeleteAddEntry)->Arg(1);
84 BENCHMARK_REGISTER_F(BpfBenchMark, WaitForRcu)->Arg(1);
85 } // namespace
86
87 BENCHMARK_MAIN();
88