1/*
2 * Copyright (C) 2023 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
17syntax = "proto2";
18
19package android.os.statsd.kernel;
20
21import "frameworks/proto_logging/stats/atoms.proto";
22import "frameworks/proto_logging/stats/atom_field_options.proto";
23
24option java_package = "com.android.os.kernel";
25option java_multiple_files = true;
26
27extend Atom {
28    optional KernelOomKillOccurred kernel_oom_kill_occurred = 754
29        [(module) = "framework"];
30}
31
32/**
33 * Logs each time the kernel's out-of-memory (OOM) killer claims a victim.
34 * Logged from:
35 *  frameworks/base/core/java/android/os/OomKillRecord.java
36 */
37message KernelOomKillOccurred {
38    // The uid if available. -1 means not available.
39    optional int32 uid = 1 [(is_uid) = true];
40
41    // The pid if available. -1 means not available.
42    optional int32 pid = 2;
43
44    // Recorded oom score when getting killed.
45    optional int32 oom_score_adj = 3;
46
47    // Millisecond uptime timestamp of when the kill was detected by the memevents bpf-program.
48    optional int64 timestamp_millis = 4;
49
50    // Name of the killed process.
51    optional string process_name = 5;
52
53    // OOM victim's virtual memory, which was freed up after the process' death.
54    optional int64 total_vm_kb = 6;
55
56    // OOM victim's anonymous RSS memory, which was freed up after the process' death.
57    optional int64 anon_rss_kb = 7;
58
59    // OOM victim's file-backed RSS memory, which was freed up after the process' death.
60    optional int64 file_rss_kb = 8;
61
62    // OOM victim's shared RSS memory, which was freed up after the process' death.
63    optional int64 shmem_rss_kb = 9;
64
65    // OOM victim's page tables, which was freed after the process' death
66    optional int64 pgtables_kb = 10;
67}
68