Re: [PATCH] gpu/tests/gpu_buddy: Add gpu_test_buddy_alloc_range for exact-range allocation

[Matthew Auld <matthew.auld@intel.com>]

On 02/03/2026 15:09, Sanjay Yadav wrote:
> Add a new kunit test gpu_test_buddy_alloc_range() that exercises the
> __gpu_buddy_alloc_range() exact-range allocation path, triggered when
> start + size == end with flags=0.
> 
> The test covers:
> - Basic exact-range allocation of the full mm
> - Exact-range allocation of equal sub-ranges (quarters)
> - Minimum chunk-size exact ranges at start, middle, and end offsets
> - Non power-of-two mm size with multiple roots, including cross-root
>    exact-range allocation
> - Randomized exact-range allocations of N contiguous page-aligned
>    slices in random order
> - Negative: partially allocated range must reject overlapping exact
>    alloc
> - Negative: checkerboard allocation pattern rejects exact range over
>    partially occupied pairs
> - Negative: misaligned start, unaligned size, and out-of-bounds end
> - Free and re-allocate the same exact range across multiple iterations
> - Various power-of-two exact ranges at natural alignment
> 
> Cc: Christian König <christian.koenig@amd.com>
> Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
> Suggested-by: Matthew Auld <matthew.auld@intel.com>
> Signed-off-by: Sanjay Yadav <sanjay.kumar.yadav@intel.com>

Reviewed-by: Matthew Auld <matthew.auld@intel.com>