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| 1 | +#!/usr/bin/env python3 |
| 2 | + |
| 3 | +import os |
| 4 | +import dataclasses |
| 5 | +import json |
| 6 | + |
| 7 | +from enum import Enum |
| 8 | +from typing import Any, Dict, List, Final, Set, Union |
| 9 | + |
| 10 | +MANAGED_OWNER: Final[str] = "kernel-patches" |
| 11 | +MANAGED_REPOS: Final[Set[str]] = { |
| 12 | + f"{MANAGED_OWNER}/bpf", |
| 13 | + f"{MANAGED_OWNER}/vmtest", |
| 14 | +} |
| 15 | + |
| 16 | +DEFAULT_SELF_HOSTED_RUNNER_TAGS: Final[List[str]] = ["self-hosted", "docker-noble-main"] |
| 17 | +DEFAULT_RUNNER: Final[str] = "ubuntu-24.04" |
| 18 | +DEFAULT_LLVM_VERSION: Final[int] = 17 |
| 19 | + |
| 20 | + |
| 21 | +class Arch(str, Enum): |
| 22 | + """ |
| 23 | + CPU architecture supported by CI. |
| 24 | + """ |
| 25 | + |
| 26 | + AARCH64 = "aarch64" |
| 27 | + S390X = "s390x" |
| 28 | + X86_64 = "x86_64" |
| 29 | + |
| 30 | + |
| 31 | +class Compiler(str, Enum): |
| 32 | + GCC = "gcc" |
| 33 | + LLVM = "llvm" |
| 34 | + |
| 35 | + |
| 36 | +@dataclasses.dataclass |
| 37 | +class Toolchain: |
| 38 | + compiler: Compiler |
| 39 | + # This is relevant ONLY for LLVM and should not be required for GCC |
| 40 | + version: int |
| 41 | + |
| 42 | + @property |
| 43 | + def short_name(self) -> str: |
| 44 | + return str(self.compiler.value) |
| 45 | + |
| 46 | + @property |
| 47 | + def full_name(self) -> str: |
| 48 | + if self.compiler == Compiler.GCC: |
| 49 | + return self.short_name |
| 50 | + |
| 51 | + return f"{self.short_name}-{self.version}" |
| 52 | + |
| 53 | + def to_dict(self) -> Dict[str, Union[str, int]]: |
| 54 | + return { |
| 55 | + "name": self.short_name, |
| 56 | + "fullname": self.full_name, |
| 57 | + "version": self.version, |
| 58 | + } |
| 59 | + |
| 60 | + |
| 61 | +@dataclasses.dataclass |
| 62 | +class BuildConfig: |
| 63 | + arch: Arch |
| 64 | + toolchain: Toolchain |
| 65 | + kernel: str = "LATEST" |
| 66 | + run_veristat: bool = False |
| 67 | + parallel_tests: bool = False |
| 68 | + build_release: bool = False |
| 69 | + |
| 70 | + @property |
| 71 | + def runs_on(self) -> List[str]: |
| 72 | + if is_managed_repo(): |
| 73 | + return DEFAULT_SELF_HOSTED_RUNNER_TAGS + [self.arch.value] |
| 74 | + else: |
| 75 | + return [DEFAULT_RUNNER] |
| 76 | + |
| 77 | + @property |
| 78 | + def build_runs_on(self) -> List[str]: |
| 79 | + if is_managed_repo(): |
| 80 | + return ["codebuild"] |
| 81 | + else: |
| 82 | + return [DEFAULT_RUNNER] |
| 83 | + |
| 84 | + @property |
| 85 | + def tests(self) -> Dict[str, Any]: |
| 86 | + tests_list = [ |
| 87 | + "test_progs", |
| 88 | + "test_progs_parallel", |
| 89 | + "test_progs_no_alu32", |
| 90 | + "test_progs_no_alu32_parallel", |
| 91 | + "test_verifier", |
| 92 | + ] |
| 93 | + |
| 94 | + if self.arch.value != "s390x": |
| 95 | + tests_list.append("test_maps") |
| 96 | + |
| 97 | + if self.toolchain.version >= 18: |
| 98 | + tests_list.append("test_progs_cpuv4") |
| 99 | + |
| 100 | + # if self.arch in [Arch.X86_64, Arch.AARCH64]: |
| 101 | + # tests_list.append("sched_ext") |
| 102 | + |
| 103 | + # Don't run GCC BPF runner, because too many tests are failing |
| 104 | + # See: https://lore.kernel.org/bpf/[email protected]/ |
| 105 | + # if self.arch == Arch.X86_64: |
| 106 | + # tests_list.append("test_progs-bpf_gcc") |
| 107 | + |
| 108 | + if not self.parallel_tests: |
| 109 | + tests_list = [test for test in tests_list if not test.endswith("parallel")] |
| 110 | + |
| 111 | + return {"include": [generate_test_config(test) for test in tests_list]} |
| 112 | + |
| 113 | + def to_dict(self) -> Dict[str, Any]: |
| 114 | + return { |
| 115 | + "arch": self.arch.value, |
| 116 | + "toolchain": self.toolchain.to_dict(), |
| 117 | + "kernel": self.kernel, |
| 118 | + "run_veristat": self.run_veristat, |
| 119 | + "parallel_tests": self.parallel_tests, |
| 120 | + "build_release": self.build_release, |
| 121 | + "runs_on": self.runs_on, |
| 122 | + "tests": self.tests, |
| 123 | + "build_runs_on": self.build_runs_on, |
| 124 | + } |
| 125 | + |
| 126 | + |
| 127 | +def is_managed_repo() -> bool: |
| 128 | + return ( |
| 129 | + os.environ["GITHUB_REPOSITORY_OWNER"] == MANAGED_OWNER |
| 130 | + and os.environ["GITHUB_REPOSITORY"] in MANAGED_REPOS |
| 131 | + ) |
| 132 | + |
| 133 | + |
| 134 | +def set_output(name, value): |
| 135 | + """Write an output variable to the GitHub output file.""" |
| 136 | + with open(os.getenv("GITHUB_OUTPUT"), "a", encoding="utf-8") as file: |
| 137 | + file.write(f"{name}={value}\n") |
| 138 | + |
| 139 | + |
| 140 | +def generate_test_config(test: str) -> Dict[str, Union[str, int]]: |
| 141 | + """Create the configuration for the provided test.""" |
| 142 | + is_parallel = test.endswith("_parallel") |
| 143 | + config = { |
| 144 | + "test": test, |
| 145 | + "continue_on_error": is_parallel, |
| 146 | + # While in experimental mode, parallel jobs may get stuck |
| 147 | + # anywhere, including in user space where the kernel won't detect |
| 148 | + # a problem and panic. We add a second layer of (smaller) timeouts |
| 149 | + # here such that if we get stuck in a parallel run, we hit this |
| 150 | + # timeout and fail without affecting the overall job success (as |
| 151 | + # would be the case if we hit the job-wide timeout). For |
| 152 | + # non-experimental jobs, 360 is the default which will be |
| 153 | + # superseded by the overall workflow timeout (but we need to |
| 154 | + # specify something). |
| 155 | + "timeout_minutes": 30 if is_parallel else 360, |
| 156 | + } |
| 157 | + return config |
| 158 | + |
| 159 | + |
| 160 | +if __name__ == "__main__": |
| 161 | + matrix = [ |
| 162 | + BuildConfig( |
| 163 | + arch=Arch.X86_64, |
| 164 | + toolchain=Toolchain(compiler=Compiler.GCC, version=DEFAULT_LLVM_VERSION), |
| 165 | + run_veristat=True, |
| 166 | + parallel_tests=True, |
| 167 | + ), |
| 168 | + BuildConfig( |
| 169 | + arch=Arch.X86_64, |
| 170 | + toolchain=Toolchain(compiler=Compiler.LLVM, version=DEFAULT_LLVM_VERSION), |
| 171 | + build_release=True, |
| 172 | + ), |
| 173 | + BuildConfig( |
| 174 | + arch=Arch.X86_64, |
| 175 | + toolchain=Toolchain(compiler=Compiler.LLVM, version=18), |
| 176 | + build_release=True, |
| 177 | + ), |
| 178 | + BuildConfig( |
| 179 | + arch=Arch.AARCH64, |
| 180 | + toolchain=Toolchain(compiler=Compiler.GCC, version=DEFAULT_LLVM_VERSION), |
| 181 | + ), |
| 182 | + BuildConfig( |
| 183 | + arch=Arch.S390X, |
| 184 | + toolchain=Toolchain(compiler=Compiler.GCC, version=DEFAULT_LLVM_VERSION), |
| 185 | + ), |
| 186 | + ] |
| 187 | + |
| 188 | + # Outside of managed repositories only run on x86_64 |
| 189 | + if not is_managed_repo(): |
| 190 | + matrix = [config for config in matrix if config.arch == Arch.X86_64] |
| 191 | + |
| 192 | + json_matrix = json.dumps({"include": [config.to_dict() for config in matrix]}) |
| 193 | + print(json.dumps(json.loads(json_matrix), indent=4)) |
| 194 | + set_output("build_matrix", json_matrix) |
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