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[RFC,v2,0/3] sstate: Replay warnings and errors when restoring from sstate

Message ID 20261115-mathieu-debug-replay-v4-v2-0-8fbfc07058b1@bootlin.com
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Series sstate: Replay warnings and errors when restoring from sstate | expand

Message

Mathieu Dubois-Briand Nov. 15, 2026, 11:33 a.m. UTC 
The sstate cache mechanism currently has a blind spot: log messages shown
while a task first runs are not replayed when the task output comes back
from the cache. This is particularly true for warnings, which are
effectively hidden unless the task is rebuilt.

This openembedded-core series saves each task's messages into the sstate
cache and replays them when cached output is reused. Logs are also
replayed for tasks that are not themselves sstate-covered but are
dependencies of covered tasks. This requires the companion bitbake
series.

Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
---
Changes in v2:
- Bundle records of non-sstate tasks from other recipes, not only the same
  recipe.
- Replay the records claimed through BB_SETSCENE_CLAIMED_TASKS, with runqueue
  ensuring each covered task is replayed exactly once.
- Extend the selftests with cross-recipe coverage.
- Link to v1: https://lore.kernel.org/r/20261024-mathieu-debug-replay-v4-v1-0-fc591ec473a7@bootlin.com

---
Mathieu Dubois-Briand (3):
      sstate: Replay warnings and errors when restoring from sstate
      sstate: Replay the records of tasks covered by setscene
      oeqa/sstatetests: Add tests for sstate log replay

 .../recipes-test/log-replay/log-replay-dep.bb      |  18 +++
 .../log-replay/log-replay-error-test.bb            |  16 ++
 .../recipes-test/log-replay/log-replay-test.bb     |  34 ++++
 .../recipes-test/log-replay/log-replay-user.bb     |  32 ++++
 meta/classes-global/sstate.bbclass                 | 156 ++++++++++++++++++-
 meta/lib/oeqa/selftest/cases/sstatetests.py        | 171 +++++++++++++++++++++
 6 files changed, 424 insertions(+), 3 deletions(-)
---
base-commit: 34991d0ce3cc5f38dd29e824af7579512d2b917e
change-id: 20261023-mathieu-debug-replay-v4-535c89baa72c

Best regards,