[merged mm-stable] mm-damon-tests-core-kunit-test-psi-goal-values-with-explicit-samples.patch removed from -mm tree

[merged mm-stable] mm-damon-tests-core-kunit-test-psi-goal-values-with-explicit-samples.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/damon/tests/core-kunit: test PSI goal values with explicit samples
has been removed from the -mm tree.  Its filename was
     mm-damon-tests-core-kunit-test-psi-goal-values-with-explicit-samples.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Karl Mehltretter <kmehltretter@gmail.com>
Subject: mm/damon/tests/core-kunit: test PSI goal values with explicit samples
Date: Mon, 28 Sep 2026 01:39:57 -0700

Test the PSI current-value helper with explicit totals so the result does
not depend on the test system's memory pressure.  Cover an unmeasured
consist goal, unmeasured temporal goals with zero and nonzero effective
quotas, and measured rounds for both tuners.  Check last_psi_total after
each call.

Link: https://lore.kernel.org/20260928083959.4030-4-sj@kernel.org
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SJ Park <sj@kernel.org>
Assisted-by: LLM
Cc: Lian Wang <lianux.mm@gmail.com>
Cc: Kunwu Chan <kunwu.chan@gmail.com>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@davidgow.net>
---

 mm/damon/tests/core-kunit.h |   43 ++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

--- a/mm/damon/tests/core-kunit.h~mm-damon-tests-core-kunit-test-psi-goal-values-with-explicit-samples
+++ a/mm/damon/tests/core-kunit.h
@@ -952,6 +952,48 @@ static void damos_test_commit_quota_goal
 			});
 }
 
+static void damos_test_set_psi_current_val(struct kunit *test)
+{
+	struct damos s = {
+		.quota.goal_tuner = DAMOS_QUOTA_GOAL_TUNER_CONSIST,
+	};
+	struct damos_quota_goal goal = {
+		.metric = DAMOS_QUOTA_SOME_MEM_PSI_US,
+		.target_value = 100,
+		.last_psi_total = U64_MAX,
+	};
+
+	/* uninitialized last_psi_total keeps the consist tuner quota */
+	damos_set_psi_current_val(1000, &goal, &s);
+	KUNIT_EXPECT_EQ(test, goal.current_value, 100ul);
+	KUNIT_EXPECT_EQ(test, goal.last_psi_total, 1000ull);
+
+	/* initialized last_psi_total gives the delta */
+	damos_set_psi_current_val(1030, &goal, &s);
+	KUNIT_EXPECT_EQ(test, goal.current_value, 30ul);
+	KUNIT_EXPECT_EQ(test, goal.last_psi_total, 1030ull);
+
+	/* temporal tuner keeps a zero quota */
+	s.quota.goal_tuner = DAMOS_QUOTA_GOAL_TUNER_TEMPORAL;
+	s.quota.esz = 0;
+	goal.last_psi_total = U64_MAX;
+	damos_set_psi_current_val(2000, &goal, &s);
+	KUNIT_EXPECT_EQ(test, goal.current_value, 100ul);
+	KUNIT_EXPECT_EQ(test, goal.last_psi_total, 2000ull);
+
+	/* temporal tuner keeps a non-zero quota */
+	s.quota.esz = SZ_64K;
+	goal.last_psi_total = U64_MAX;
+	damos_set_psi_current_val(3000, &goal, &s);
+	KUNIT_EXPECT_EQ(test, goal.current_value, 0ul);
+	KUNIT_EXPECT_EQ(test, goal.last_psi_total, 3000ull);
+
+	/* temporal tuner uses the measured PSI delta */
+	damos_set_psi_current_val(3250, &goal, &s);
+	KUNIT_EXPECT_EQ(test, goal.current_value, 250ul);
+	KUNIT_EXPECT_EQ(test, goal.last_psi_total, 3250ull);
+}
+
 static void damos_test_commit_quota_goals_for(struct kunit *test,
 		struct damos_quota_goal *dst_goals, int nr_dst_goals,
 		struct damos_quota_goal *src_goals, int nr_src_goals)
@@ -2413,6 +2455,7 @@ static struct kunit_case damon_test_case
 	KUNIT_CASE(damos_test_new_filter),
 	KUNIT_CASE(damos_test_new_scheme_keeps_src_quota),
 	KUNIT_CASE(damos_test_commit_quota_goal),
+	KUNIT_CASE(damos_test_set_psi_current_val),
 	KUNIT_CASE(damos_test_commit_quota_goals),
 	KUNIT_CASE(damos_test_commit_quota),
 	KUNIT_CASE(damos_test_commit_dests),
_

Patches currently in -mm which might be from kmehltretter@gmail.com are

squashfs-fix-fragment-index-table-sizing-overflow-on-32-bit.patch
squashfs-make-the-fragment-index-table-bounds-check-overflow-safe.patch