CI: kernel: use ccache to speedup workflow

Use ccache to speedup kernel compilation.
Ccache dir is cached across each build test. To refresh ccache directory
we generate an hash of the kernel include files, that includes the
kernel versions of every kernel supported and the kernel compile
includes.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2022-10-04 18:43:38 +02:00
parent 2781e3839e
commit 137ba15e6e
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@ -18,6 +18,7 @@ jobs:
outputs:
target: ${{ steps.find_targets.outputs.target }}
owner_lc: ${{ steps.lower_owner.outputs.owner_lc }}
ccache_hash: ${{ steps.ccache_hash.outputs.ccache_hash }}
steps:
- name: Checkout
@ -30,6 +31,13 @@ jobs:
| tr '[:upper:]' '[:lower:]')
echo "::set-output name=owner_lc::$OWNER_LC"
- name: Generate ccache hash
id: ccache_hash
run: |
CCACHE_HASH=$(md5sum include/kernel-* | awk '{ print $1 }' \
| md5sum | awk '{ print $1 }')
echo "::set-output name=ccache_hash::$CCACHE_HASH"
- name: Set targets
id: find_targets
run: |
@ -133,6 +141,14 @@ jobs:
path: openwrt/${{ env.TOOLCHAIN_FILE }}
key: ${{ env.TOOLCHAIN_FILE }}-${{ env.TOOLCHAIN_SHA256 }}
- name: Cache ccache
uses: actions/cache@v3
with:
path: openwrt/.ccache
key: ccache-kernel-${{ env.TARGET }}/${{ env.SUBTARGET }}-${{ needs.determine_targets.outputs.ccache_hash }}
restore-keys: |
ccache-kernel-${{ env.TARGET }}/${{ env.SUBTARGET }}-
- name: Download external toolchain
if: ${{ steps.cache-external-toolchain.outputs.cache-hit != 'true' }}
shell: su buildbot -c "sh -e {0}"
@ -153,6 +169,7 @@ jobs:
echo CONFIG_ALL_KMODS=y >> .config
echo CONFIG_DEVEL=y >> .config
echo CONFIG_AUTOREMOVE=y >> .config
echo CONFIG_CCACHE=y >> .config
./scripts/ext-toolchain.sh \
--toolchain ${{ env.TOOLCHAIN_FILE }}/toolchain-* \