// Copyright 2020 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

message VirtioBalloonResize {}

message VirtioBalloonOOMDeflation {}

message VirtioWsBucket {
    // age of bucket in milliseconds.
    uint64 age = 1;
    // file-back memory, in bytes.
    uint64 file_bytes = 2;
    // anonymous memory, in bytes.
    uint64 anon_bytes = 3;
}

message VirtioBalloonWsReport {
    // 2-16 buckets of memory working set.
    repeated VirtioWsBucket ws_buckets = 1;
    // actual size of balloon in bytes.
    uint64 balloon_actual = 2;
}

message RegisteredEvent {
    oneof Event {
        VirtioBalloonResize resize = 1;
        VirtioBalloonOOMDeflation oom_deflation = 2;
        VirtioBalloonWsReport ws_report = 3;
    }
}