/** * ttm_bo_mem_space * * @bo: Pointer to a struct ttm_buffer_object. the data of which * we want to allocate space for. * @proposed_placement: Proposed new placement for the buffer object. * @mem: A struct ttm_mem_reg. * @interruptible: Sleep interruptible when sliping. * @no_wait_gpu: Return immediately if the GPU is busy. * * Allocate memory space for the buffer object pointed to by @bo, using * the placement flags in @mem, potentially evicting other idle buffer objects. * This function may sleep while waiting for space to become available. * Returns: * -EBUSY: No space available (only if no_wait == 1). * -ENOMEM: Could not allocate memory for the buffer object, either due to * fragmentation or concurrent allocators. * -ERESTARTSYS: An interruptible sleep was interrupted by a signal. */ /** * Creates space for memory region @mem according to its type. * * This function first searches for free space in compatible memory types in * the priority order defined by the driver. If free space isn't found, then * ttm_bo_mem_force_space is attempted in priority order to evict and find * space. */