Only save caches on main branch pushes#1523
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d-e-s-o merged 1 commit intolibbpf:mainfrom Mar 21, 2026
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With a large build matrix and various specialized jobs, cache entries are created for every PR branch, quickly exhausting the 10 GB GitHub Actions cache limit and causing evictions. That is a problem, because it can force kernel bzImage and vmsh rebuilds, which can take a long time. Restrict cache saving to the main branch, while still allowing all branches to restore from existing caches. In so doing we should curb evictions hopefully completely. Signed-off-by: Daniel Müller <deso@posteo.net>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #1523 +/- ##
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Coverage 95.51% 95.51%
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Files 56 56
Lines 9555 9555
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Hits 9126 9126
Misses 429 429 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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With a large build matrix and various specialized jobs, cache entries are created for every PR branch, quickly exhausting the 10 GB GitHub Actions cache limit and causing evictions. That is a problem, because it can force kernel bzImage and vmsh rebuilds, which can take a long time.
Restrict cache saving to the main branch, while still allowing all branches to restore from existing caches. In so doing we should curb evictions hopefully completely.