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drm/ttm: export some functions useful to drivers using ttm 

These are functions required by nouveau which will be merged later.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Ben Skeggs 2009-12-11 15:13:00 +10:00 committed by Dave Airlie
parent 9062fa6612
commit d1ede145ce
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/ttm/ttm_bo.c
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@ -185,6 +185,7 @@ int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo, bool interruptible)
}
return 0;
}
EXPORT_SYMBOL(ttm_bo_wait_unreserved);
static void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)
{
@ -946,6 +947,7 @@ int ttm_bo_wait_cpu(struct ttm_buffer_object *bo, bool no_wait)
return wait_event_interruptible(bo->event_queue,
atomic_read(&bo->cpu_writers) == 0);
}
EXPORT_SYMBOL(ttm_bo_wait_cpu);
int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
@ -1727,12 +1729,14 @@ int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait)
ttm_bo_unreserve(bo);
return ret;
}
EXPORT_SYMBOL(ttm_bo_synccpu_write_grab);
void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo)
{
if (atomic_dec_and_test(&bo->cpu_writers))
wake_up_all(&bo->event_queue);
}
EXPORT_SYMBOL(ttm_bo_synccpu_write_release);
/**
* A buffer object shrink method that tries to swap out the first