kernel/linux.git/mm/damon/tests, branch v6.19.12

mm/damon: rename DAMON_MIN_REGION to DAMON_MIN_REGION_SZ

2026-03-19T15:15:32+00:00

[ Upstream commit dfb1b0c9dc0d61e422905640e1e7334b3cf6f384 ] The macro is for the default minimum size of each DAMON region. There was a case that a reader was confused if it is the minimum number of total DAMON regions, which is set on damon_attrs->min_nr_regions. Make the name more explicit. Link: https://lkml.kernel.org/r/20260117175256.82826-8-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton Stable-dep-of: c80f46ac228b ("mm/damon/core: disallow non-power of two min_region_sz") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

mm/damon/tests/core-kunit: avoid damos_test_commit stack warning

2025-12-09T19:25:34+00:00

The newly added damos_test_commit() constructs multiple large structures on the stack, which exceeds the warning limit in some cases: In file included from mm/damon/core.c:2941: mm/damon/tests/core-kunit.h: In function 'damos_test_commit': mm/damon/tests/core-kunit.h:965:1: error: the frame size of 1520 bytes is larger than 1280 bytes [-Werror=frame-larger-than=] Split this function up into two separate ones that are called sequentially, so they can occupy the same stack slots. Link: https://lkml.kernel.org/r/20251204100403.1034980-1-arnd@kernel.org Fixes: 299a88f6ec13 ("mm/damon/tests/core-kunit: add damos_commit() test") Signed-off-by: Arnd Bergmann Reviewed-by: SeongJae Park Cc: Quanmin Yan Signed-off-by: Andrew Morton

mm/damon/tests/sysfs-kunit: fix use after free on error path

2025-11-24T23:08:55+00:00

Re-order these frees to avoid dereferencing "sysfs_target" after it has been freed. Link: https://lkml.kernel.org/r/aSBq5uSPIqsqH8zO@stanley.mountain Fixes: ee131696794c ("mm/damon/tests/sysfs-kunit: handle alloc failures on damon_sysfs_test_add_targets()") Signed-off-by: Dan Carpenter Reviewed-by: SeongJae Park Signed-off-by: Andrew Morton

mm/damon/tests/core-kunit: remove DAMON_MIN_REGION redefinition

2025-11-20T21:44:01+00:00

A few DAMON core functions including damon_set_regions() were hard-coded to use DAMON_MIN_REGION as their regions management granularity. For simple and human-readable unit tests' expectations, DAMON core layer kunit test re-defines DAMON_MIN_REGION to '1'. A previous patch series [1] has removed the hard-coded part but kept the redefinition and updated related function calls to explicitly use DAMON_MIN_REGION. Remove the unnecessary redefinition and update relevant function calls to pass literals (number '1') instead of the DAMON_MIN_REGION. Link: https://lkml.kernel.org/r/20251112154114.66053-7-sj@kernel.org Link: https://lore.kernel.org/20250828171242.59810-1-sj@kernel.org [1] Signed-off-by: SeongJae Park Cc: Bill Wendling Cc: Brendan Higgins Cc: David Gow Cc: David Hildenbrand Cc: Hugh Dickins Cc: Jonathan Corbet Cc: Justin Stitt Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Miguel Ojeda Cc: Mike Rapoport Cc: Nathan Chancellor Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

mm/damon: rename damos->filters to damos->core_filters

2025-11-20T21:44:01+00:00

DAMOS filters that are handled by the ops layer are linked to damos->ops_filters. Owing to the ops_ prefix on the name, it is easy to understand it is for ops layer handled filters. The other types of filters, which are handled by the core layer, are linked to damos->filters. Because of the name, it is easy to confuse the list is there for not only core layer handled ones but all filters. Avoid such confusions by renaming the field to core_filters. Link: https://lkml.kernel.org/r/20251112154114.66053-3-sj@kernel.org Signed-off-by: SeongJae Park Cc: Bill Wendling Cc: Brendan Higgins Cc: David Gow Cc: David Hildenbrand Cc: Hugh Dickins Cc: Jonathan Corbet Cc: Justin Stitt Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Miguel Ojeda Cc: Mike Rapoport Cc: Nathan Chancellor Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

mm/damon/tests/core-kunit: add damon_commit_target_regions() test

2025-11-20T21:44:00+00:00

Add a new test for damon_commit_target_regions(). Link: https://lkml.kernel.org/r/20251111184415.141757-12-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Signed-off-by: Andrew Morton

mm/damon/tests/core-kunit: add damos_commit() test

2025-11-20T21:44:00+00:00

Add a new unit test for damos_commit(). Link: https://lkml.kernel.org/r/20251111184415.141757-11-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Signed-off-by: Andrew Morton

mm/damon/tests/core-kunit: add damos_commit_dests() test

2025-11-20T21:44:00+00:00

Add a new unit test for damos_commit_dests(). Link: https://lkml.kernel.org/r/20251111184415.141757-10-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Signed-off-by: Andrew Morton

mm/damon/tests/core-kunit: add damos_commit_quota() test

2025-11-20T21:44:00+00:00

Add a new unit test for damos_commit_quota(). Link: https://lkml.kernel.org/r/20251111184415.141757-8-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Signed-off-by: Andrew Morton

mm/damon/tests/core-kunit: add damos_commit_quota_goals() test

2025-11-20T21:44:00+00:00

Add a new unit test for damos_commit_quota_goals(). Link: https://lkml.kernel.org/r/20251111184415.141757-7-sj@kernel.org Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Signed-off-by: Andrew Morton