ci: add Pull Request Labeler

[mkroening]

This PR adds a workflow to run actions/labeler to automatically label PRs based on touched file paths.

This action is already used by Uhyve: uhyve/.github/labeler.yml.

The current labels in this PR are just a gut feeling. It would be great to have your feedback on them and on whether we should do this at all.

[github-actions]

Benchmark Results

Details

Benchmark	Current: bd95636	Previous: 2e23902	Performance Ratio
startup_benchmark Build Time	82.64 s	80.34 s	1.03 ❗
startup_benchmark File Size	0.79 MB	0.80 MB	1.00 ❗
Startup Time - 1 core	0.75 s (±0.02 s)	0.75 s (±0.02 s)	1.01
Startup Time - 2 cores	0.77 s (±0.02 s)	0.74 s (±0.02 s)	1.05 ❗
Startup Time - 4 cores	0.77 s (±0.03 s)	0.74 s (±0.02 s)	1.04
multithreaded_benchmark Build Time	85.02 s	82.11 s	1.04 ❗
multithreaded_benchmark File Size	0.90 MB	0.86 MB	1.05 ❗
Multithreaded Pi Efficiency - 2 Threads	86.11 % (±6.38 %)	85.89 % (±6.61 %)	1.00
Multithreaded Pi Efficiency - 4 Threads	43.87 % (±2.73 %)	43.43 % (±2.56 %)	1.01
Multithreaded Pi Efficiency - 8 Threads	25.58 % (±1.22 %)	25.76 % (±1.53 %)	0.99
micro_benchmarks Build Time	83.94 s	80.40 s	1.04 ❗
micro_benchmarks File Size	0.90 MB	0.86 MB	1.05 ❗
Scheduling time - 1 thread	66.50 ticks (±3.64 ticks)	62.65 ticks (±4.06 ticks)	1.06
Scheduling time - 2 threads	35.31 ticks (±3.95 ticks)	34.08 ticks (±4.10 ticks)	1.04
Micro - Time for syscall (getpid)	4.38 ticks (±0.60 ticks)	3.45 ticks (±0.58 ticks)	1.27 ❗
Memcpy speed - (built_in) block size 4096	83571.74 MByte/s (±57868.14 MByte/s)	82448.38 MByte/s (±56997.13 MByte/s)	1.01
Memcpy speed - (built_in) block size 1048576	30365.67 MByte/s (±24576.62 MByte/s)	30585.98 MByte/s (±24707.84 MByte/s)	0.99
Memcpy speed - (built_in) block size 16777216	26285.22 MByte/s (±21753.92 MByte/s)	26340.06 MByte/s (±21720.96 MByte/s)	1.00
Memset speed - (built_in) block size 4096	83547.49 MByte/s (±57849.46 MByte/s)	82292.76 MByte/s (±56891.50 MByte/s)	1.02
Memset speed - (built_in) block size 1048576	31129.39 MByte/s (±25034.08 MByte/s)	31323.85 MByte/s (±25145.86 MByte/s)	0.99
Memset speed - (built_in) block size 16777216	27071.89 MByte/s (±22272.94 MByte/s)	27104.68 MByte/s (±22209.94 MByte/s)	1.00
Memcpy speed - (rust) block size 4096	73452.51 MByte/s (±51182.16 MByte/s)	74097.96 MByte/s (±51811.44 MByte/s)	0.99
Memcpy speed - (rust) block size 1048576	30243.19 MByte/s (±24522.56 MByte/s)	30361.60 MByte/s (±24602.37 MByte/s)	1.00
Memcpy speed - (rust) block size 16777216	26988.19 MByte/s (±22289.36 MByte/s)	27625.34 MByte/s (±22806.88 MByte/s)	0.98
Memset speed - (rust) block size 4096	73742.78 MByte/s (±51344.79 MByte/s)	74373.47 MByte/s (±51976.48 MByte/s)	0.99
Memset speed - (rust) block size 1048576	30998.86 MByte/s (±24988.32 MByte/s)	31110.89 MByte/s (±25033.24 MByte/s)	1.00
Memset speed - (rust) block size 16777216	27773.90 MByte/s (±22795.30 MByte/s)	28386.93 MByte/s (±23265.03 MByte/s)	0.98
alloc_benchmarks Build Time	78.17 s	74.76 s	1.05 ❗
alloc_benchmarks File Size	0.87 MB	0.87 MB	1.00 ❗
Allocations - Allocation success	91.31 %	91.31 %	1
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	61.44 %	61.44 %	1
Allocations - Average Allocation time	4392.32 Ticks (±108.33 Ticks)	5860.58 Ticks (±98.43 Ticks)	0.75 ❗
Allocations - Average Allocation time (no fail)	5141.33 Ticks (±103.51 Ticks)	6554.81 Ticks (±92.86 Ticks)	0.78 ❗
Allocations - Average Deallocation time	916.59 Ticks (±209.17 Ticks)	1805.01 Ticks (±250.35 Ticks)	0.51 ❗
mutex_benchmark Build Time	78.59 s	79.82 s	0.98 ❗
mutex_benchmark File Size	0.90 MB	0.86 MB	1.05 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	12.12 ns (±0.65 ns)	12.10 ns (±0.41 ns)	1.00
Mutex Stress Test Average Time per Iteration - 2 Threads	40.56 ns (±2.06 ns)	40.26 ns (±1.68 ns)	1.01

This comment was automatically generated by workflow using github-action-benchmark.

[Gelbpunkt]

I would like the driver labeling to be a bit more fine-grained, e.g. having driver-console, driver-fs, driver-net, driver-virtio, driver-vsock, and maybe even the individual drivers inside the directories (like gem, loopback, rtl8139, virtio-net, ...)

[sarahspberrypi]

I second this.

[mkroening]

I had included them in my initial draft but thought they were too numerous, but I can't think of any concrete downside of having many tags. I have added them back. 👍

[Gelbpunkt]

Maybe also src/drivers/fs/**?

[mkroening]

I think I'd rather keep that separate as driver-virtio-fs. 🤔

[sarahspberrypi]

Overall, I like the idea, thanks! :)

[sarahspberrypi]

I think, a src/console/** label is missing here? This file includes all subdirectories, just not this one.

[mkroening]

I went by modules, not directories. All the single-file modules don't have a label. I believe the console module is too small to warrant a label, even though it has two files.

If you disagree, I can also add a label, though.

[sarahspberrypi]

I second this.