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drm/mm: add ig_frag selftest

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This patch introduces fragmentation in the address range
and measures time taken by 10k and 20k insertions. ig_frag()
will fail if the time taken by 20k insertions takes more than
4 times of 10k insertions as we know that insertions should at
most scale quadratically.

v2:
introduce fragmentation by freeing every other node.
only test bottom-up and top-down for now.

v3:
fix incorrect mode check

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/369076/
This commit is contained in:
Nirmoy Das
2020-06-05 11:14:02 +02:00
committed by Christian König
parent a66da873c4
commit 6e60d5ded0
2 changed files with 125 additions and 0 deletions
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1
drivers/gpu/drm/selftests/drm_mm_selftests.h
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@@ -14,6 +14,7 @@ selftest(insert, igt_insert)
selftest(replace, igt_replace)
selftest(insert_range, igt_insert_range)
selftest(align, igt_align)
selftest(frag, igt_frag)
selftest(align32, igt_align32)
selftest(align64, igt_align64)
selftest(evict, igt_evict)