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| author |   Ben Skeggs <bskeggs@redhat.com> | 2010-10-05 16:53:48 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-12-03 15:05:10 +1000 |
| commit | 6a6b73f254123851f7f73ab5e57344a569d6a0ab (patch) | |
| tree | 5db28f577f0a7b15525aeef57d45a34ea4366bb8 /drivers/gpu/drm/nouveau/nouveau_fence.c | |
| parent | drm/nouveau: disallow fbcon accel if running in interrupt context (diff) | |
| download | linux-dev-6a6b73f254123851f7f73ab5e57344a569d6a0ab.tar.xz linux-dev-6a6b73f254123851f7f73ab5e57344a569d6a0ab.zip | |
drm/nouveau: add per-channel mutex, use to lock access to drm's channel
This fixes a race condition between fbcon acceleration and TTM buffer
moves. To reproduce:
- start X
- switch to vt and "while (true); do dmesg; done"
- switch to another vt and "sleep 2 && cat /path/to/debugfs/dri/0/evict_vram"
- switch back to vt running dmesg
We don't make use of this on any other channel yet, they're currently
protected by drm_global_mutex. This will change in the near future.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_fence.c')
0 files changed, 0 insertions, 0 deletions