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Maarten Lankhorst 5ea6f1c326 nouveau: make nouveau importing global buffers completely thread-safe, with tests 
While I've closed off most races in a previous patch, a small race still existed
where importing then unreffing cound cause an invalid bo. Add a test for this case.

Racing sequence fixed:

- thread 1 releases bo, refcount drops to zero, blocks on acquiring nvdev->lock.
- thread 2 increases refcount to 1.
- thread 2 decreases refcount to zero, blocks on acquiring nvdev->lock.

At this point the 2 threads will clean up the same bo.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@ubuntu.com>
Reviewed-By: Emil Velikov <emil.l.velikov@gmail.com>
2015-03-13 20:26:33 +01:00
..
.gitignore nouveau: make nouveau importing global buffers completely thread-safe, with tests 2015-03-13 20:26:33 +01:00
Makefile.am nouveau: make nouveau importing global buffers completely thread-safe, with tests 2015-03-13 20:26:33 +01:00
threaded.c nouveau: make nouveau importing global buffers completely thread-safe, with tests 2015-03-13 20:26:33 +01:00