| // Copyright (C) 2024 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. |
| |
| import { |
| NUM, |
| Plugin, |
| PluginContextTrace, |
| PluginDescriptor, |
| STR_NULL, |
| } from '../../public'; |
| import {ASYNC_SLICE_TRACK_KIND} from '../../core_plugins/async_slices'; |
| import {AsyncSliceTrackV2} from '../../core_plugins/async_slices/async_slice_track_v2'; |
| |
| // This plugin renders visualizations of runtime power state transitions for |
| // Linux kernel devices (devices managed by Linux drivers). |
| class LinuxKernelDevices implements Plugin { |
| async onTraceLoad(ctx: PluginContextTrace): Promise<void> { |
| const result = await ctx.engine.query(` |
| select |
| t.id as trackId, |
| t.name |
| from linux_device_track t |
| join _slice_track_summary using (id) |
| order by t.name; |
| `); |
| |
| const it = result.iter({ |
| name: STR_NULL, |
| trackId: NUM, |
| }); |
| |
| for (; it.valid(); it.next()) { |
| const trackId = it.trackId; |
| const displayName = it.name ?? `${trackId}`; |
| |
| ctx.registerStaticTrack({ |
| uri: `org.kernel.LinuxKernelDevices#${displayName}`, |
| displayName, |
| trackIds: [trackId], |
| kind: ASYNC_SLICE_TRACK_KIND, |
| trackFactory: ({trackKey}) => { |
| return new AsyncSliceTrackV2( |
| { |
| engine: ctx.engine, |
| trackKey, |
| }, |
| 0, |
| [trackId], |
| ); |
| }, |
| groupName: `Linux Kernel Devices`, |
| }); |
| } |
| } |
| } |
| |
| export const plugin: PluginDescriptor = { |
| pluginId: 'org.kernel.LinuxKernelDevices', |
| plugin: LinuxKernelDevices, |
| }; |