force_alloc in ttm_operation_ctx

[Matthew Brost]

On Wed, Apr 23, 2025 at 09:35:35AM +1000, Dave Airlie wrote:
> Hey,
> 
> Been digging a bit into cgroups stuff and I found this force_alloc
> flags in the TTM operation context that seemed like I should dig
> deeper, but I can't see this flag being used anywhere, places set it
> but I can't spot the consumer of it?
> 

A quick grep shows:

mbrost at lstrano-desk:drm$ grep force_alloc */*.c
ttm/ttm_bo_vm.c:                        .force_alloc = true
ttm/ttm_resource.c:             .force_alloc = true

We have this wired in xe_bo_evict() too but always set it to false at
the caller.

Matt

> Is there some out of tree patch or something currently being
> upstreamed to use it?
> 
> Dave.