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bh=PMEdbVHoJrZwuzmNn8i5Bad/INZcQ1/1hylklN9wYVo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=mcr4TtLEwYI08+sEBA7Qj3ucQ/+RqsPgHruJ9i70JRLeUkhdzwRrlVfl4g+zu5SaQ XY6qtQsbSvBXJUsy2KE3ezjV7jK/9Z3qtPVxaqVmX+pSbb9Sse3l3BwuPAxcuHOGZB o2j7RF0TTeGnBEHBk3jm/jA1sqthS+PPxDf4BHoiGavgwVcIZ/aDJrIGtJmRxsZnLN NUdJgRCt8nFB2Bk/yplzP7TjG8oO5bOvQaFc4IqaBcZu5o6kCUFB7BgkzLrHp8HNar 3VgRKsnrdqPpA/LJy7I0TGMX227cEkXpdq9LdynEUHpL95TE+wENo3K4xTSOgdy9v9 4G5HxGwFm2pMQ== From: SJ Park To: Cc: SJ Park , Andrew Morton , Brendan Higgins , David Gow , damon@lists.linux.dev, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 2/6] mm/damon/tests/core-kunit: add damon_commit_probes() test Date: Wed, 29 Jul 2026 07:47:33 -0700 Message-ID: <20260729144738.90895-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260729144738.90895-1-sj@kernel.org> References: <20260729144738.90895-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: DB5BA180006 X-Stat-Signature: i6dx9n9gqehn3xb6cadj7t4hewcxk9o7 X-Rspam-User: X-HE-Tag: 1785336464-123210 X-HE-Meta: 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 JgvApEcr nibz0CVrOffVc0HQr73+WOLjKGTYbbRBuzk89hZswveOkAEvisKB45eY/arjzh0RzIkJ6Qxh/NVka703Eouy/wHz3MAwDF3KIaTdUKNezInkLyKvY6AMwnAQtp2F6h8OKUKFj7UUZVLu0o+0QGw+KqHz/H49pvMuaACdjIrLzk737rmhlz0zG9okPkbkePZGLvtiMJoykFgRkrZjyBQlDa/A3PueAkOuyMCJsc6TV2Hqj5LSSed/O+F8FLUdlY2Su4sZcCpF3vw6U3zC+mXOXO3CFQFZOCVDx92ZOeQozlifQEpwQSYOzu+B9MQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add kunit test to ensure damon_commit_probes() updates destination DAMON context with source probes as expected. Signed-off-by: SJ Park --- mm/damon/tests/core-kunit.h | 81 +++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index ff864402e9c75..d1e8c612fea03 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -1393,6 +1393,86 @@ static void damon_test_commit_filter(struct kunit *test) }); } +static struct damon_ctx *damon_test_help_setup_probes(unsigned int weights[], + int nr_weights) +{ + struct damon_ctx *ctx; + struct damon_probe *probe; + int i; + + ctx = damon_new_ctx(); + if (!ctx) + return NULL; + for (i = 0; i < nr_weights; i++) { + probe = damon_new_probe(); + if (!probe) { + damon_destroy_ctx(ctx); + return NULL; + } + probe->weight = weights[i]; + damon_add_probe(ctx, probe); + } + return ctx; +} + +static void damon_test_commit_probes_for(struct kunit *test, + unsigned int dst_weights[], int nr_dst_probes, + unsigned int src_weights[], int nr_src_probes) +{ + struct damon_ctx *dst, *src; + int err; + struct damon_probe *dst_probe, *src_probe; + + dst = damon_test_help_setup_probes(dst_weights, nr_dst_probes); + if (!dst) + kunit_skip(test, "dst alloc fail"); + src = damon_test_help_setup_probes(src_weights, nr_src_probes); + if (!src) { + damon_destroy_ctx(dst); + kunit_skip(test, "src alloc fail"); + } + + err = damon_commit_probes(dst, src); + KUNIT_EXPECT_EQ(test, err, 0); + if (err) + return; + nr_dst_probes = 0; + damon_for_each_probe(dst_probe, dst) + nr_dst_probes++; + nr_src_probes = 0; + damon_for_each_probe(src_probe, src) + nr_src_probes++; + KUNIT_EXPECT_EQ(test, nr_dst_probes, nr_src_probes); + nr_dst_probes = 0; + damon_for_each_probe(dst_probe, dst) { + src_probe = damon_nth_probe(nr_dst_probes, src); + KUNIT_EXPECT_EQ(test, src_probe->weight, dst_probe->weight); + nr_dst_probes++; + } + damon_destroy_ctx(dst); + damon_destroy_ctx(src); +} + +static void damon_test_commit_probes(struct kunit *test) +{ + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){}, 0); + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){1}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){1, 2}, 2); + damon_test_commit_probes_for(test, + (unsigned int[]){1}, 1, (unsigned int[]){2}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){1}, 1, (unsigned int[]){2, 3}, 2); + damon_test_commit_probes_for(test, + (unsigned int[]){2, 3}, 2, (unsigned int[]){1}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){2, 3}, 2, (unsigned int[]){}, 0); + damon_test_commit_probes_for(test, + (unsigned int[]){2}, 1, (unsigned int[]){}, 0); +} + static void damon_test_commit_ctx(struct kunit *test) { struct damon_ctx *src, *dst; @@ -1745,6 +1825,7 @@ static struct kunit_case damon_test_cases[] = { KUNIT_CASE(damos_test_commit_migrate_hot), KUNIT_CASE(damon_test_commit_target_regions), KUNIT_CASE(damon_test_commit_filter), + KUNIT_CASE(damon_test_commit_probes), KUNIT_CASE(damon_test_commit_ctx), KUNIT_CASE(damos_test_filter_out), KUNIT_CASE(damon_test_feed_loop_next_input), -- 2.47.3