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| author | Matthew Brost <matthew.brost@intel.com> | 2025-10-08 14:45:16 -0700 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2025-10-09 03:22:41 -0700 |
| commit | 1faeeea056abb05a6513418e4cdb208326a67749 (patch) | |
| tree | efba17087127237dd3feea327aea4a0735f82c55 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | a4dae94aad6ace04d396034e99a93b0e489b3da4 (diff) | |
| download | linux-1faeeea056abb05a6513418e4cdb208326a67749.tar.gz linux-1faeeea056abb05a6513418e4cdb208326a67749.zip | |
drm/xe/vf: Avoid indefinite blocking in preempt rebind worker for VFs supporting migration
Blocking in work queues on a hardware action that may never occur —
especially when it depends on a software fixup also scheduled on the
a work queue — is a recipe for deadlock. This situation arises with
the preempt rebind worker and VF post-migration recovery. To prevent
potential deadlocks, avoid indefinite blocking in the preempt rebind
worker for VFs that support migration.
v4:
- Use dma_fence_wait_timeout (CI)
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-19-matthew.brost@intel.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
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