add BPF GCC support for BPF CI

.github/scripts/matrix.py

@@ -39,7 +39,8 @@ class Compiler(str, Enum):
 class Toolchain:
     compiler: Compiler
     # This is relevant ONLY for LLVM and should not be required for GCC
-    version: int
+    version: int = 0
+    extra_name: str = ""
 
     @property
     def short_name(self) -> str:
@@ -48,9 +49,15 @@ def short_name(self) -> str:
     @property
     def full_name(self) -> str:
         if self.compiler == Compiler.GCC:
-            return self.short_name
+            if self.extra_name != '':
+                return f"{self.short_name}-{self.extra_name}"
+            else:
+                return f"{self.short_name}"
 
-        return f"{self.short_name}-{self.version}"
+        if self.extra_name != '':
+            return f"{self.short_name}-{self.version}-{self.extra_name}"
+        else:
+            return f"{self.short_name}-{self.version}"
 
     def to_dict(self) -> Dict[str, Union[str, int]]:
         return {
@@ -64,6 +71,7 @@ def to_dict(self) -> Dict[str, Union[str, int]]:
 class BuildConfig:
     arch: Arch
     toolchain: Toolchain
+    bpf_toolchain: Toolchain = dataclasses.field(default_factory=lambda: Toolchain(compiler=Compiler.LLVM, version=DEFAULT_LLVM_VERSION))
     kernel: str = "LATEST"
     run_veristat: bool = False
     parallel_tests: bool = False
@@ -100,6 +108,9 @@ def tests(self) -> Dict[str, Any]:
         if self.toolchain.version >= 18:
             tests_list.append("test_progs_cpuv4")
 
+        if self.bpf_toolchain == "gcc":
+            tests_list = [ "test_progs-bpf_gcc" ]
+
         if not self.parallel_tests:
             tests_list = [test for test in tests_list if not test.endswith("parallel")]
 
@@ -109,6 +120,7 @@ def to_dict(self) -> Dict[str, Any]:
         return {
             "arch": self.arch.value,
             "toolchain": self.toolchain.to_dict(),
+            "bpf_toolchain": self.bpf_toolchain.to_dict(),
             "kernel": self.kernel,
             "run_veristat": self.run_veristat,
             "parallel_tests": self.parallel_tests,
@@ -185,6 +197,11 @@ def generate_test_config(test: str) -> Dict[str, Union[str, int]]:
             arch=Arch.S390X,
             toolchain=Toolchain(compiler=Compiler.GCC, version=DEFAULT_LLVM_VERSION),
         ),
+        BuildConfig(
+            arch=Arch.X86_64,
+            toolchain=Toolchain(compiler=Compiler.GCC, version=DEFAULT_LLVM_VERSION, extra_name="bpfgcc"),
+            bpf_toolchain=Toolchain(compiler=Compiler.GCC),
+        ),
     ]
 
     # Outside of those repositories we only run on x86_64

.github/workflows/kernel-build-test.yml

@@ -15,6 +15,10 @@ on:
         required: true
         type: string
         description: The toolchain, e.g gcc, llvm
+      bpf-toolchain:
+        required: true
+        type: string
+        description: The toolchain, e.g gcc, llvm
       runs_on:
         required: true
         type: string
@@ -65,6 +69,7 @@ jobs:
       arch: ${{ inputs.arch }}
       toolchain_full: ${{ inputs.toolchain_full }}
       toolchain: ${{ inputs.toolchain }}
+      bpf-toolchain: ${{ inputs.bpf-toolchain }}
       runs_on: ${{ inputs.build_runs_on }}
       llvm-version: ${{ inputs.llvm-version }}
       kernel: ${{ inputs.kernel }}
@@ -76,6 +81,7 @@ jobs:
       arch: ${{ inputs.arch }}
       toolchain_full: ${{ inputs.toolchain_full }}
       toolchain: ${{ inputs.toolchain }}
+      bpf-toolchain: ${{ inputs.bpf-toolchain }}
       runs_on: ${{ inputs.runs_on }}
       llvm-version: ${{ inputs.llvm-version }}
       kernel: ${{ inputs.kernel }}

.github/workflows/kernel-build.yml

@@ -16,6 +16,10 @@ on:
         required: true
         type: string
         description: The toolchain, e.g gcc, llvm
+      bpf-toolchain:
+        required: true
+        type: string
+        description: The toolchain, e.g gcc, llvm
       runs_on:
         required: true
         type: string
@@ -94,6 +98,7 @@ jobs:
           arch: ${{ inputs.arch }}
           llvm-version: ${{ inputs.llvm-version }}
           pahole: c2f89dab3f2b0ebb53bab3ed8be32f41cb743c37
+          bpf-toolchain: ${{ inputs.bpf-toolchain }}
       - name: Build kernel image
         uses: libbpf/ci/build-linux@main
         with:
@@ -107,6 +112,7 @@ jobs:
         with:
           arch: ${{ inputs.arch }}
           toolchain: ${{ inputs.toolchain }}
+          bpf-toolchain: ${{ inputs.bpf-toolchain }}
           kbuild-output: ${{ env.KBUILD_OUTPUT }}
           max-make-jobs: 32
           llvm-version: ${{ inputs.llvm-version }}
@@ -115,7 +121,7 @@ jobs:
           # RELEASE=0 adds -O0 make flag
           # RELEASE=1 adds -O2 make flag
           RELEASE: ${{ inputs.release && '1' || '' }}
-      - if: ${{ github.event_name != 'push' }}
+      - if: ${{ inputs.bpf-toolchain != 'gcc' && github.event_name != 'push' }}
         name: Build samples
         uses: libbpf/ci/build-samples@main
         with:
@@ -127,7 +133,7 @@ jobs:
       - name: Tar artifacts
         run: |
           bash .github/scripts/tar-artifact.sh ${{ inputs.arch }} ${{ inputs.toolchain_full }}
-      - if: ${{ github.event_name != 'push' }}
+      - if: ${{ inputs.bpf-toolchain != 'gcc' && github.event_name != 'push' }}
         name: Remove KBUILD_OUTPUT content
         shell: bash
         run: |

.github/workflows/test.yml

@@ -43,14 +43,15 @@ jobs:
       arch: ${{ matrix.arch }}
       toolchain_full: ${{ matrix.toolchain.fullname }}
       toolchain: ${{ matrix.toolchain.name }}
+      bpf-toolchain: ${{ matrix.bpf_toolchain.name }}
       runs_on: ${{ toJSON(matrix.runs_on) }}
       build_runs_on: ${{ toJSON(matrix.build_runs_on) }}
       llvm-version: ${{ matrix.toolchain.version }}
       kernel: ${{ matrix.kernel }}
       tests: ${{ toJSON(matrix.tests) }}
       run_veristat: ${{ matrix.run_veristat }}
       # We only run tests on pull requests.
-      run_tests: ${{ github.event_name != 'push' }}
+      run_tests: ${{ matrix.bpf_toolchain.name != 'gcc' && github.event_name != 'push' }}
       # Download sources
       download_sources: ${{ github.repository == 'kernel-patches/vmtest' }}
       build_release: ${{ matrix.build_release }}