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imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=lhJVi031; spf=pass (imf02.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1779258548; a=rsa-sha256; cv=none; b=A59Gs5vpAsmu83NjPydKcnFzfYsP/1phOWjpDaZ4R9w1KisP4m4MI719RZczRHHoJNpSye HDThhhOervDW9Hxabh4AsLdwev0hVX3ebZ8v+0prWZGHlR73t1O/GHtaENGJoypDeWlBI/ rHEVt+d8nY2WTInDM5e49u0x9TIshm4= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id CF4A241B3D; Wed, 20 May 2026 06:29:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 641AC1F00893; Wed, 20 May 2026 06:29:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779258547; bh=2QZBI9lHfw0z2vkHVTq3F8i3GFIsR6yWGGTq/bbu72I=; h=From:To:Cc:Subject:Date; b=lhJVi0312kKyHMbcsBQ3eowTBceyHjvB+t5JIUXfALT+jp/1VLlXseB3qYIKKL7Gb JxGzGZLDevosJUtPvyATXLqnHzJ8AZ7cq4S0/zNU9a0TWzf57BKxYmsFzkqmPHvPee t16WKXvRhiWZb05CZp5tGASHnCLPZB4V8k/1wGqjz9FykOTYHdVucXb8wUVbvn1KLp C4LPucgd9kqAvMDnKN76tEFB3gGH9oZwGRAaHtwfppExDQQIOyDcPDYRF8er68qEh0 y4teKxnCD8wiEBhRB2PN2EgX8kWz5wPFlfPrbh/LLG0eppK9gLWXmDcfGFQj6J9rQO KSQaBkUtZHNdw== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , Brendan Higgins , David Gow , Shuah Khan , 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 00/14] mm/damon: minor improvements for code readability and tests Date: Tue, 19 May 2026 23:28:32 -0700 Message-ID: <20260520062858.167011-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 880C380003 X-Stat-Signature: wkawe4mk6jjxg4x9f4i1w7wqynqr1eh1 X-HE-Tag: 1779258548-110215 X-HE-Meta: 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 4H8zzMXg tbihJI1ottqN5sPmEoTNFu0kDB4T0OztWh1F2TWRjSwpVpAz37g9pbVpSDxZe+IIyny9XN6Wfgo5XFlDiH2clyeiXm/sZsTG+z/oaQVRvK5aPDaadmKrcSQUvBgVQE1uUi/MQbwfLc7xUmI/6KWjyAyyirQ0BQUxtRJz+RfcJ4XdIYlZi6d0SHSPsJ2zq3RE/ikJ+2jD/mzfsO+9vzb9WqillMg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Implement minor improvements on code readability and tests for DAMON. First seven patches are for DAMON code readability and resulting maintenance. Patches 1 and 2 make damon_set_regions() safer and easier to read. Patches 3 and 4 remove fragmented DAMON API use cases. Patches 5-7 hides unused core functions that are unnecessarily exposed to API callers. The following seven patches are for DAMON tests improvement. Patches 8 and 9 adds and removes DAMON_DEBUG_SANITY verifications to ensure reasonable test coverage without too high overhead. Patch 10 adds a new kunit test for damon_set_regions(). Patch 11 makes sysfs.py selftest more gracefully finishes under test failures. Patches 12-13 adds simple sysfs.sh test cases for the monitoring intervals goal directory, the addr_unit file and the pause file. SeongJae Park (14): mm/damon/core: safely handle no region case in damon_set_regions() mm/damon/core: do not use region out of a loop in damon_set_regions() samples/damon/mtier: replace damon_add_region() with damon_set_regions() mm/damon/tests/vaddr-kunit: replace damon_add_region() with damon_set_regions() mm/damon/core: hide damon_add_region() mm/damon/core: hide damon_insert_region() mm/damon/core: hide damon_destroy_region() mm/damon/core: add kdamond_call() debug_sanity check mm/damon/core: remove damon_verify_nr_regions() mm/damon/tests/core-kunit: add damon_set_regions() test cases selftests/damon/sysfs.py: stop kdamonds before failing selftests/damon/sysfs.sh: test monitoring intervals goal dir selftests/damon/sysfs.sh: test addr_unit file existence selftests/damon/sysfs.sh: test pause file existence include/linux/damon.h | 13 --- mm/damon/core.c | 92 ++++++++++++---- mm/damon/tests/core-kunit.h | 142 +++++++++++++++++++++---- mm/damon/tests/vaddr-kunit.h | 16 +-- samples/damon/mtier.c | 10 +- tools/testing/selftests/damon/sysfs.py | 4 + tools/testing/selftests/damon/sysfs.sh | 14 +++ 7 files changed, 223 insertions(+), 68 deletions(-) base-commit: 8b8727a18b7f247aed7e0476b92d07fc59c04cb8 -- 2.47.3