[PATCH 03/10] mm/damon/core: support damos_filter->pass

SeongJae Park
2025-01-07T20:18:11Z

Respect damos_filter->pass from core layer's DAMOS filed handling logic,
by making the decision to pass a region in the middle of the filters
evaluation depending on the damos_filter->pass field.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
mm/damon/core.c | 6 +++---
mm/damon/tests/core-kunit.h | 10 +++++-----
2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index e54bd19d6f06..71db2c754e6d 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -1374,7 +1374,7 @@ static void damos_update_stat(struct damos *s,
s->stat.sz_ops_filter_passed += sz_ops_filter_passed;
}

-static bool __damos_filter_out(struct damon_ctx *ctx, struct damon_target *t,
+static bool damos_filter_match(struct damon_ctx *ctx, struct damon_target *t,
struct damon_region *r, struct damos_filter *filter)
{
bool matched = false;
@@ -1428,8 +1428,8 @@ static bool damos_filter_out(struct damon_ctx *ctx, struct damon_target *t,
struct damos_filter *filter;

damos_for_each_filter(filter, s) {
- if (__damos_filter_out(ctx, t, r, filter))
- return true;
+ if (damos_filter_match(ctx, t, r, filter))
+ return !filter->pass;
}
return false;
}
diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h
index cf22e09a3507..8f58d3424c21 100644
--- a/mm/damon/tests/core-kunit.h
+++ b/mm/damon/tests/core-kunit.h
@@ -434,25 +434,25 @@ static void damos_test_filter_out(struct kunit *test)
damon_add_region(r, t);

/* region in the range */
- KUNIT_EXPECT_TRUE(test, __damos_filter_out(NULL, t, r, f));
+ KUNIT_EXPECT_TRUE(test, damos_filter_match(NULL, t, r, f));
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 1);

/* region before the range */
r->ar.start = DAMON_MIN_REGION * 1;
r->ar.end = DAMON_MIN_REGION * 2;
- KUNIT_EXPECT_FALSE(test, __damos_filter_out(NULL, t, r, f));
+ KUNIT_EXPECT_FALSE(test, damos_filter_match(NULL, t, r, f));
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 1);

/* region after the range */
r->ar.start = DAMON_MIN_REGION * 6;
r->ar.end = DAMON_MIN_REGION * 8;
- KUNIT_EXPECT_FALSE(test, __damos_filter_out(NULL, t, r, f));
+ KUNIT_EXPECT_FALSE(test, damos_filter_match(NULL, t, r, f));
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 1);

/* region started before the range */
r->ar.start = DAMON_MIN_REGION * 1;
r->ar.end = DAMON_MIN_REGION * 4;
- KUNIT_EXPECT_FALSE(test, __damos_filter_out(NULL, t, r, f));
+ KUNIT_EXPECT_FALSE(test, damos_filter_match(NULL, t, r, f));
/* filter should have split the region */
KUNIT_EXPECT_EQ(test, r->ar.start, DAMON_MIN_REGION * 1);
KUNIT_EXPECT_EQ(test, r->ar.end, DAMON_MIN_REGION * 2);
@@ -465,7 +465,7 @@ static void damos_test_filter_out(struct kunit *test)
/* region started in the range */
r->ar.start = DAMON_MIN_REGION * 2;
r->ar.end = DAMON_MIN_REGION * 8;
- KUNIT_EXPECT_TRUE(test, __damos_filter_out(NULL, t, r, f));
+ KUNIT_EXPECT_TRUE(test, damos_filter_match(NULL, t, r, f));
/* filter should have split the region */
KUNIT_EXPECT_EQ(test, r->ar.start, DAMON_MIN_REGION * 2);
KUNIT_EXPECT_EQ(test, r->ar.end, DAMON_MIN_REGION * 6);
--
2.39.5