Migrate libbpf ci to GH actions

changes to docker command require to run it in non-interactive mode

.github/actions/debian/action.yml

@@ -0,0 +1,16 @@
+name: 'debian'
+description: 'Build'
+inputs:
+  target:
+    description: 'Run target'
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - run: |
+        source /tmp/ci_setup
+        bash -x $CI_ROOT/managers/debian.sh SETUP
+        bash -x $CI_ROOT/managers/debian.sh ${{ inputs.target }}
+        bash -x $CI_ROOT/managers/debian.sh CLEANUP
+      shell: bash
+

.github/actions/setup/action.yml

@@ -0,0 +1,20 @@
+name: 'setup'
+description: 'setup env, create /tmp/ci_setup'
+runs:
+  using: "composite"
+  steps:
+    - id: variables
+      run: |
+        export REPO_ROOT=$GITHUB_WORKSPACE
+        export CI_ROOT=$REPO_ROOT/travis-ci
+        # this is somewhat ugly, but that is the easiest way to share this code with
+        # arch specific docker
+        echo export DEBIAN_FRONTEND=noninteractive > /tmp/ci_setup
+        echo sudo apt-get install -y aptitude qemu-kvm zstd binutils-dev elfutils libcap-dev libelf-dev libdw-dev >> /tmp/ci_setup
+        echo export PROJECT_NAME='libbpf' >> /tmp/ci_setup
+        echo export AUTHOR_EMAIL="$(git log -1 --pretty=\"%aE\")" >> /tmp/ci_setup
+        echo export REPO_ROOT=$GITHUB_WORKSPACE >> /tmp/ci_setup
+        echo export CI_ROOT=$REPO_ROOT/travis-ci >> /tmp/ci_setup
+        echo export VMTEST_ROOT=$CI_ROOT/vmtest >> /tmp/ci_setup
+      shell: bash
+

.github/actions/vmtest/action.yml

@@ -0,0 +1,15 @@
+name: 'vmtest'
+description: 'Build + run vmtest'
+inputs:
+  kernel:
+    description: 'kernel or LATEST'
+    required: true
+    default: 'LATEST'
+runs:
+  using: "composite"
+  steps:
+    - run: |
+        source /tmp/ci_setup
+        export KERNEL=${{ inputs.kernel }}
+        $CI_ROOT/vmtest/run_vmtest.sh
+      shell: bash

.github/workflows/test.yml

@@ -0,0 +1,85 @@
+name: libbpf-ci
+
+on: 
+  pull_request:
+  push:
+  schedule:
+    - cron:  '0 18 * * *'
+
+
+jobs:
+  vmtest:
+    runs-on: ubuntu-latest
+    name: Kernel ${{ matrix.kernel }} + selftests
+    strategy:
+      matrix:
+        include:
+          - kernel: 'LATEST'
+          - kernel: '5.5.0'
+          - kernel: '4.9.0'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/setup
+      - uses: ./.github/actions/vmtest
+        with:
+          kernel: ${{ matrix.kernel }}
+
+  debian:
+    runs-on: ubuntu-latest
+    name: Debian Build (${{ matrix.name }})
+    strategy:
+      matrix:
+        include:
+          - name: default
+            target: RUN
+          - name: ASan+UBSan
+            target: RUN_ASAN
+          - name: clang
+            target: RUN_CLANG
+          - name: clang ASan+UBSan
+            target: RUN_CLANG_ASAN
+          - name: gcc-10
+            target: RUN_GCC10
+          - name: gcc-10 ASan+UBSan
+            target: RUN_GCC10_ASAN
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/setup
+      - uses: ./.github/actions/debian
+        with:
+          target: ${{ matrix.target }}
+
+  ubuntu:
+    runs-on: ubuntu-latest
+    name: Ubuntu Focal Build (${{ matrix.arch }})
+    strategy:
+      matrix:
+        include:
+          - arch: aarch64
+          - arch: ppc64le
+          - arch: s390x
+          - arch: x86
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/setup
+      - run: source /tmp/ci_setup && sudo -E $CI_ROOT/managers/ubuntu.sh
+        if: matrix.arch == 'x86'
+      - uses: uraimo/run-on-arch-action@v2.0.5
+        name: Build in docker
+        if: matrix.arch != 'x86'
+        with:
+          distro:
+            ubuntu20.04
+          arch:
+            ${{ matrix.arch }}
+          setup:
+            cp /tmp/ci_setup $GITHUB_WORKSPACE
+          dockerRunArgs: |
+              --volume "${GITHUB_WORKSPACE}:${GITHUB_WORKSPACE}"
+          shell: /bin/bash
+          install: |
+              export DEBIAN_FRONTEND=noninteractive
+              export TZ="America/Los_Angeles"
+              apt-get update -y
+              apt-get install -y tzdata build-essential sudo
+          run: source ${GITHUB_WORKSPACE}/ci_setup && $CI_ROOT/managers/ubuntu.sh

travis-ci/managers/debian.sh

@@ -18,7 +18,7 @@ function error() {
 }
 
 function docker_exec() {
-    docker exec $ENV_VARS -it $CONT_NAME "$@"
+    docker exec $ENV_VARS $CONT_NAME "$@"
 }
 
 set -eu

travis-ci/vmtest/helpers.sh

@@ -2,11 +2,23 @@
 # $2 - fold identifier, no spaces
 # $3 - fold section description
 travis_fold() {
-	local YELLOW='\033[1;33m'
-	local NOCOLOR='\033[0m'
-	echo travis_fold:$1:$2
-	if [ ! -z "${3:-}" ]; then
-		echo -e "${YELLOW}$3${NOCOLOR}"
-	fi
-	echo
+  local YELLOW='\033[1;33m'
+  local NOCOLOR='\033[0m'
+  if [ -z ${GITHUB_WORKFLOW+x} ]; then
+    echo travis_fold:$1:$2
+    if [ ! -z "${3:-}" ]; then
+      echo -e "${YELLOW}$3${NOCOLOR}"
+    fi
+    echo
+  else
+    if [ $1 = "start" ]; then
+      line="::group::$2"
+      if [ ! -z "${3:-}" ]; then
+        line="$line - ${YELLOW}$3${NOCOLOR}"
+      fi
+    else
+      line="::endgroup"
+    fi
+    echo -e "$line"
+  fi
 }

travis-ci/vmtest/run.sh

@@ -436,11 +436,15 @@ sudo umount "$mnt"
 
 echo "Starting VM with $(nproc) CPUs..."
 
+if kvm-ok ; then
+  accel="-cpu kvm64 -enable-kvm"
+else
+  accel="-cpu qemu64 -machine accel=tcg"
+fi
 qemu-system-x86_64 -nodefaults -display none -serial mon:stdio \
-	-cpu kvm64 -enable-kvm -smp "$(nproc)" -m 4G \
-	-drive file="$IMG",format=raw,index=1,media=disk,if=virtio,cache=none \
-	-kernel "$vmlinuz" -append "root=/dev/vda rw console=ttyS0,115200$APPEND"
-
+  ${accel} -smp "$(nproc)" -m 4G \
+  -drive file="$IMG",format=raw,index=1,media=disk,if=virtio,cache=none \
+  -kernel "$vmlinuz" -append "root=/dev/vda rw console=ttyS0,115200$APPEND"
 sudo mount -o loop "$IMG" "$mnt"
 if exitstatus="$(cat "$mnt/exitstatus" 2>/dev/null)"; then
 	printf '\nTests exit status: %s\n' "$exitstatus" >&2