mm/damon/tests/core-kunit: test split above max_nr_regions/2

Browse source

Add a test that exercises kdamond_split_regions() when the total region
count is already above max_nr_regions / 2, asserting that the function
still splits a fraction of the regions (makes progress) and does not
overshoot max_nr_regions.

The region size and min_region_sz are picked so the split arithmetic does
not depend on the page size.

All tests pass:
  damon: pass:31 fail:0 skip:0 total:31
  Totals: pass:31 fail:0 skip:0 total:31

Link: https://lore.kernel.org/20260626085851.70754-3-jiayuan.chen@linux.dev
Link: https://lore.kernel.org/20260629145630.134891-3-sj@kernel.org
Signed-off-by: Jiayuan Chen <jiayuan.chen@shopee.com>
Signed-off-by: SJ Park <sj@kernel.org>
Reviewed-by: SJ Park <sj@kernel.org>
Cc: Shu Anzai <shu17az@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Jiayuan Chen 2026-06-29 07:56:29 -07:00 • committed by Andrew Morton

parent 1a582e6e01

commit 6958d08e3a

1 changed files with 64 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

64

mm/damon/tests/core-kunit.h

View file