[PATCH v2 0/4] workflows: bootlinux: enhance kernel configuration fragment support

Daniel Gomez
2025-09-19T12:25:39Z

This patch series enhances the previously introduced kernel
configuration fragment support with: ccache support to speed up builds,
reproducile kernel builds, and broader architecture support (ARM64 and
x86_64) for these features.

Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
---
Changes in v2:
- Reproducible builds support: Deterministic kernel builds via
standardized environment variables (KBUILD_BUILD_*), compatible with
both GCC and Clang toolchains

- ccache integration: Compiler cache support with both system/user-wide
and kdevops-managed configurations, automatic package installation
across all supported distributions

- Enhanced fragment system: Extended architecture support from
ARM64-only to include x86_64

- Clean build options: Move the mrproper execution task to a
configurable option available for both fragment and monolithic
configurations, enabling deterministic builds when needed while
preserving incremental build performance by default

- Added Luis review tag on the fragment patch

- Link to v1: https://lore.kernel.org/r/20250916-kernel-fragment-support-v1-1-7be6faa12b05@samsung.com

---
Daniel Gomez (4):
workflows: bootlinux: add reproducible builds support
workflows: bootlinux: add comprehensive ccache support
workflows: bootlinux: add kernel configuration fragments support
workflows: bootlinux: add clean builds configuration option

defconfigs/configs/linux_kdevops.config | 11 ++
defconfigs/configs/linux_minimal.config | 9 ++
playbooks/roles/bootlinux/defaults/main.yml | 75 +++++++++++++
playbooks/roles/bootlinux/tasks/build/9p.yml | 69 +++++++++++-
playbooks/roles/bootlinux/tasks/build/builder.yml | 2 +
playbooks/roles/bootlinux/tasks/build/targets.yml | 14 ++-
playbooks/roles/bootlinux/tasks/ccache.yml | 37 +++++++
.../roles/bootlinux/tasks/config-fragments.yml | 80 ++++++++++++++
playbooks/roles/bootlinux/tasks/config.yml | 8 ++
.../bootlinux/tasks/install-deps/debian/main.yml | 1 +
.../bootlinux/tasks/install-deps/redhat/main.yml | 1 +
.../bootlinux/tasks/install-deps/suse/main.yml | 1 +
.../tasks/install-minimal-deps/debian/main.yml | 1 +
.../tasks/install-minimal-deps/redhat/main.yml | 2 +
.../tasks/install-minimal-deps/suse/main.yml | 1 +
playbooks/roles/bootlinux/tasks/main.yml | 31 +++++-
playbooks/roles/bootlinux/templates/ccache.conf.j2 | 27 +++++
.../bootlinux/templates/fragments/64bit.config | 1 +
.../templates/fragments/arm64_16k_pages.config | 1 +
.../templates/fragments/arm64_4k_pages.config | 1 +
.../templates/fragments/arm64_64k_pages.config | 1 +
.../bootlinux/templates/fragments/blktrace.config | 2 +
.../templates/fragments/buffer_head.config | 7 ++
.../bootlinux/templates/fragments/distro.config | 84 +++++++++++++++
.../templates/fragments/ebpf-errorinj.config | 2 +
.../bootlinux/templates/fragments/ebpf.config | 61 +++++++++++
.../roles/bootlinux/templates/fragments/gdb.config | 6 ++
.../bootlinux/templates/fragments/initramfs.config | 22 ++++
.../bootlinux/templates/fragments/kmemleak.config | 3 +
.../roles/bootlinux/templates/fragments/ksm.config | 1 +
.../bootlinux/templates/fragments/localauto.config | 2 +
.../bootlinux/templates/fragments/moby.config | 9 ++
.../templates/fragments/modules-blk.config | 2 +
.../fragments/modules-extended-modversions.config | 2 +
.../templates/fragments/modules-modversions.config | 1 +
.../templates/fragments/modules-testing.config | 3 +
.../bootlinux/templates/fragments/modules.config | 15 +++
.../bootlinux/templates/fragments/numa.config | 2 +
.../bootlinux/templates/fragments/storage.config | 11 ++
.../bootlinux/templates/fragments/systemd.config | 78 ++++++++++++++
.../bootlinux/templates/fragments/virtio-fs.config | 15 +++
.../bootlinux/templates/fragments/vm_debug.config | 1 +
.../bootlinux/templates/fragments/xarray.config | 6 ++
.../templates/fragments/xarray_no_multi.config | 9 ++
workflows/linux/Kconfig | 119 +++++++++++++++++++++
workflows/linux/Kconfig.fragments | 26 +++++
workflows/linux/fragments/Kconfig.advanced | 27 +++++
workflows/linux/fragments/Kconfig.arch | 30 ++++++
workflows/linux/fragments/Kconfig.container | 15 +++
workflows/linux/fragments/Kconfig.development | 28 +++++
workflows/linux/fragments/Kconfig.essential | 63 +++++++++++
workflows/linux/fragments/Kconfig.legacy | 9 ++
workflows/linux/fragments/Kconfig.memory | 15 +++
workflows/linux/fragments/Kconfig.modules | 46 ++++++++
workflows/linux/fragments/Kconfig.security | 10 ++
workflows/linux/fragments/Kconfig.specialized | 23 ++++
56 files changed, 1121 insertions(+), 8 deletions(-)
---
base-commit: 7d094b5edd24d50a53253412e1b36e4374194470
change-id: 20250916-kernel-fragment-support-1207a7352473
prerequisite-change-id: 20250916-sysbench-ab-dut-d29b07bb37b5:v1
prerequisite-patch-id: 3f52cbbd6dbab61e54af372d72532fcd148d8b91

Best regards,
--
Daniel Gomez <da.gomez@samsung.com>