kernel.git/drivers/gpu/drm/ttm/ttm_execbuf_util.c, branch linux-3.14.y

drm/ttm: Allow execbuf util reserves without ticket

2013-11-18T08:38:52Z

If no reservation ticket is given to the execbuf reservation utilities, try reservation with non-blocking semantics. This is intended for eviction paths that use the execbuf reservation utilities for convenience rather than for deadlock avoidance. Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz

drm/ttm: inline ttm_bo_reserve and related calls

2013-06-28T02:04:09Z

Makes lockdep a lot more useful. Signed-off-by: Maarten Lankhorst Signed-off-by: Dave Airlie

drm/ttm: convert to the reservation api

2013-06-28T02:04:01Z

Now that the code is compatible in semantics, flip the switch. Use ww_mutex instead of the homegrown implementation. ww_mutex uses -EDEADLK to signal that the caller has to back off, and -EALREADY to indicate this buffer is already held by the caller. ttm used -EAGAIN and -EDEADLK for those, respectively. So some changes were needed to handle this correctly. Signed-off-by: Maarten Lankhorst Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie

drm/ttm: make ttm reservation calls behave like reservation calls

2013-06-28T02:02:20Z

This commit converts the source of the val_seq counter to the ww_mutex api. The reservation objects are converted later, because there is still a lockdep splat in nouveau that has to resolved first. Signed-off-by: Maarten Lankhorst Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie

drm/ttm: use ttm_bo_reserve_slowpath_nolru in ttm_eu_reserve_buffers, v2

2013-01-15T13:57:10Z

This requires re-use of the seqno, which increases fairness slightly. Instead of spinning with a new seqno every time we keep the current one, but still drop all other reservations we hold. Only when we succeed, we try to get back our other reservations again. This should increase fairness slightly as well. Changes since v1: - Increase val_seq before calling ttm_bo_reserve_slowpath_nolru and retrying to take all entries to prevent a race. Signed-off-by: Maarten Lankhorst Reviewed-by: Jerome Glisse

drm/ttm: cleanup ttm_eu_reserve_buffers handling

2013-01-15T13:56:48Z

With the lru lock no longer required for protecting reservations we can just do a ttm_bo_reserve_nolru on -EBUSY, and handle all errors in a single path. Signed-off-by: Maarten Lankhorst Reviewed-by: Jerome Glisse

drm/ttm: remove lru_lock around ttm_bo_reserve

2013-01-15T13:56:37Z

There should no longer be assumptions that reserve will always succeed with the lru lock held, so we can safely break the whole atomic reserve/lru thing. As a bonus this fixes most lockdep annotations for reservations. Signed-off-by: Maarten Lankhorst Reviewed-by: Jerome Glisse

drm/ttm: change fence_lock to inner lock

2012-12-10T10:09:58Z

This requires changing the order in ttm_bo_cleanup_refs_or_queue to take the reservation first, as there is otherwise no race free way to take lru lock before fence_lock. Signed-off-by: Maarten Lankhorst Reviewed-by: Thomas Hellstrom Signed-off-by: Dave Airlie

drm/ttm: alter cpu_writers to return -EBUSY in ttm_execbuf_util reservations

2012-11-20T06:17:35Z

This is similar to other platforms that don't allow command submission to buffers locked on the cpu. Signed-off-by: Maarten Lankhorst Reviewed-by: Thomas Hellstrom Signed-off-by: Dave Airlie

drm/ttm: remove sync_obj_arg member

2012-11-20T06:09:55Z

vmwgfx was its only user and always sets it to the same.. Signed-off-by: Maarten Lankhorst Reviewed-By: Thomas Hellstrom Signed-off-by: Dave Airlie