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

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 <[email protected]>
---
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/[email protected]

---
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 <[email protected]>