diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_bo_vm.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_vm.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 11863fbdd5d6..eebb4c06c04d 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -139,19 +139,17 @@ vm_fault_t ttm_bo_vm_reserve(struct ttm_buffer_object *bo, if (!(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) { ttm_bo_get(bo); up_read(&vmf->vma->vm_mm->mmap_sem); - (void) ttm_bo_wait_unreserved(bo); + if (!dma_resv_lock_interruptible(bo->base.resv, + NULL)) + dma_resv_unlock(bo->base.resv); ttm_bo_put(bo); } return VM_FAULT_RETRY; } - /* - * If we'd want to change locking order to - * mmap_sem -> bo::reserve, we'd use a blocking reserve here - * instead of retrying the fault... - */ - return VM_FAULT_NOPAGE; + if (dma_resv_lock_interruptible(bo->base.resv, NULL)) + return VM_FAULT_NOPAGE; } return 0; @@ -316,7 +314,7 @@ out_io_unlock: } EXPORT_SYMBOL(ttm_bo_vm_fault_reserved); -static vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf) +vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; pgprot_t prot; @@ -336,6 +334,7 @@ static vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf) return ret; } +EXPORT_SYMBOL(ttm_bo_vm_fault); void ttm_bo_vm_open(struct vm_area_struct *vma) { @@ -395,8 +394,8 @@ static int ttm_bo_vm_access_kmap(struct ttm_buffer_object *bo, return len; } -static int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr, - void *buf, int len, int write) +int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr, + void *buf, int len, int write) { unsigned long offset = (addr) - vma->vm_start; struct ttm_buffer_object *bo = vma->vm_private_data; @@ -432,6 +431,7 @@ static int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr, return ret; } +EXPORT_SYMBOL(ttm_bo_vm_access); static const struct vm_operations_struct ttm_bo_vm_ops = { .fault = ttm_bo_vm_fault, @@ -520,13 +520,6 @@ EXPORT_SYMBOL(ttm_bo_mmap); int ttm_bo_mmap_obj(struct vm_area_struct *vma, struct ttm_buffer_object *bo) { ttm_bo_get(bo); - - /* - * FIXME: &drm_gem_object_funcs.mmap is called with the fake offset - * removed. Add it back here until the rest of TTM works without it. - */ - vma->vm_pgoff += drm_vma_node_start(&bo->base.vma_node); - ttm_bo_mmap_vma_setup(bo, vma); return 0; } |