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([208.184.112.130]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-121724de268sm48542031c88.8.2025.12.23.20.22.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Dec 2025 20:22:22 -0800 (PST) From: Shu Anzai To: SeongJae Park Cc: Andrew Morton , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Shu Anzai Subject: [PATCH v2 3/5] mm/damon/tests/core-kunit: add a test case for region merge size limit in damon_test_merge_regions_of() Date: Wed, 24 Dec 2025 04:21:58 +0000 Message-ID: <20251224042200.2061847-4-shu17az@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251224042200.2061847-1-shu17az@gmail.com> References: <20251224042200.2061847-1-shu17az@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 1AA6C140011 X-Rspamd-Server: rspam03 X-Stat-Signature: 4is3yeo6bbr5pqz3pypsqpeeo9wciwwj X-Rspam-User: X-HE-Tag: 1766550143-798397 X-HE-Meta: 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 K3SnCcib SBz+5T10m/fA9IPux4gGmE8VikjPy/U6khCGDvIp03vVDmHHy44l5jfwEYHOTWxrcdGOYoT0ueHwLdMyw16dVpFJI7KgBckAaFbXMBOnJr28jui+1CX9BmKFoYXXOdF1lw0VgZcQPhFh+4j3rPZ/OEIkzmJ9d2I01S6gOOgxzMp73V/9sro8fTUurcoabvwWrh7JKKLCZ+CShlfS65PLG+wt3uxGIjnnzKIXjBMwadv37+rClskaYsEKTortGDdpUetm6abcqubDTFezSWfD//21lKjMLYe+HHFw6xnX8D5QLdpxn9qvbbkylMl+Ns/mq2JoBomYZzrlSOxhHHzH4M92x343nejs+uolbBaFw56GT5e+3Cpv43NKbWgAxTdCQ33hOsuZMfK1tiHWPcANj1mhgQHl5fm0HWaL7qiGmGWcq9xGZSPkLI3wnY7EEiqh4R3p5JoD3G83Vli0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add a test case in damon_test_merge_regions_of() to verify that two adjacent regions are not merged if the resulting region would exceed the specified size limit. Signed-off-by: Shu Anzai --- mm/damon/tests/core-kunit.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index 6e301113e103..2eb6f41635a8 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -238,12 +238,12 @@ static void damon_test_merge_regions_of(struct kunit *test) { struct damon_target *t; struct damon_region *r; - unsigned long sa[] = {0, 100, 114, 122, 130, 156, 170, 184}; - unsigned long ea[] = {100, 112, 122, 130, 156, 170, 184, 230}; - unsigned int nrs[] = {0, 0, 10, 10, 20, 30, 1, 2}; + unsigned long sa[] = {0, 100, 114, 122, 130, 156, 170, 184, 230}; + unsigned long ea[] = {100, 112, 122, 130, 156, 170, 184, 230, 10170}; + unsigned int nrs[] = {0, 0, 10, 10, 20, 30, 1, 2, 5}; - unsigned long saddrs[] = {0, 114, 130, 156, 170}; - unsigned long eaddrs[] = {112, 130, 156, 170, 230}; + unsigned long saddrs[] = {0, 114, 130, 156, 170, 230}; + unsigned long eaddrs[] = {112, 130, 156, 170, 230, 10170}; int i; t = damon_new_target(); @@ -261,9 +261,9 @@ static void damon_test_merge_regions_of(struct kunit *test) } damon_merge_regions_of(t, 9, 9999); - /* 0-112, 114-130, 130-156, 156-170 */ - KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 5u); - for (i = 0; i < 5; i++) { + /* 0-112, 114-130, 130-156, 156-170, 170-230, 230-10170 */ + KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 6u); + for (i = 0; i < 6; i++) { r = __nth_region_of(t, i); KUNIT_EXPECT_EQ(test, r->ar.start, saddrs[i]); KUNIT_EXPECT_EQ(test, r->ar.end, eaddrs[i]); -- 2.43.0