tar-artifacts: Include samples/livepatch/livepatch-sample.ko

livepatch and bpf trampoline both use ftrace direct functions. Special
cares are needed to make the two work together.

To add selftests for livepatch + trampoline, a livepatch kernel module is
needed. Enable compiling samples/livepatch/livepatch-sample.ko and
include it in the tar artifacts.

Signed-off-by: Song Liu <[email protected]>

Author: liu-song-6

ci/vmtest/configs/config

@@ -1,4 +1,7 @@
 CONFIG_KASAN=y
 CONFIG_KASAN_GENERIC=y
 CONFIG_KASAN_VMALLOC=y
+CONFIG_LIVEPATCH=y
+CONFIG_SAMPLES=y
+CONFIG_SAMPLE_LIVEPATCH=m
 # CONFIG_UBSAN=y

tar-artifacts/tar-artifacts.sh

@@ -29,7 +29,7 @@ source "${GITHUB_ACTION_PATH}/../helpers.sh"
 "${arch}"-linux-gnu-strip --strip-debug "${KBUILD_OUTPUT}"/vmlinux
 
 image_name=$(make -C ${REPO_ROOT} ARCH="$(platform_to_kernel_arch "${arch}")" -s image_name)
-kbuild_output_file_list=(".config" "${image_name}" "vmlinux")
+kbuild_output_file_list=(".config" "${image_name}" "vmlinux" "samples/livepatch/livepatch-sample.ko")
 
 function push_to_kout_list() {
   local item="$1"
@@ -88,4 +88,3 @@ if [[ -n "${ARCHIVE_SCHED_EXT_SELFTESTS}" ]]; then
 fi
 
 zstd -T0 -19 -i "${tarball}" -o "${zst_tarball}"
-