Breno Leitao 9e83d5104a workqueue: Add stall detector sample module ...

Add a sample module under samples/workqueue/stall_detector/ that
reproduces a workqueue stall caused by PF_WQ_WORKER misuse.  The
module queues two work items on the same per-CPU pool, then clears
PF_WQ_WORKER and sleeps in wait_event_idle(), hiding from the
concurrency manager and stalling the second work item indefinitely.

This is useful for testing the workqueue watchdog stall diagnostics.

Signed-off-by: Breno Leitao <[email protected]>
Acked-by: Song Liu <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>

2026-03-05 07:30:49 -10:00

..

stall_detector

…