Arunpravin Paneer Selvam 4f450f2b0f gpu/tests/buddy: add dirty tracker performance KUnit test ... Add gpu_test_buddy_dirty_tracker_performance to demonstrate the key advantage of the decoupled dirty-tracker design over the old dual-tree / force_merge approach. The test runs two scenarios on a 4 GiB pool after alternating clear/dirty fragmentation at 4 KiB granularity: 1. Contiguous 2 GiB alloc: smaller than the 4 GiB span so it routes through the contiguous allocator rather than the exact-range fast path. The old design requires __force_merge() to rebuild the block; the new design coalesces during free() so the alloc is O(log N). old (force_merge) - 45 ms dirty tracker design - 11 ms 2. Repeated 256 KiB alloc throughput: the old design pays __force_merge() on every alloc; the new design does not. old (force_merge) - 86 ms dirty tracker design - 20 ms v2: - Force a contiguous 256 KiB allocation in the repeated-alloc loop so the baseline actually exercises __force_merge(). (sashiko) v3: - Make the first test allocate 2 GiB instead of the full 4 GiB pool, so it really uses the contiguous path; update the numbers. (sashiko) Assisted-by: Claude:claude-opus-4-8 Cc: Matthew Auld <matthew.auld@intel.com> Cc: Christian König <christian.koenig@amd.com> Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patch.msgid.link/20260825172432.80355-2-Arunpravin.PaneerSelvam@amd.com		2026-08-27 17:59:01 +05:30
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.kunitconfig	gpu/tests: Add a dedicated .kunitconfig	2026-07-29 13:06:24 +02:00
gpu_buddy_test.c	gpu/tests/buddy: add dirty tracker performance KUnit test	2026-08-27 17:59:01 +05:30
gpu_random.c
gpu_random.h
Makefile