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imf05.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=mM6yA0+w; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf05.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783399137; b=6zDtMJtT+/Ft/AeKTDcz+v2+rZOrqHgnLHUYZ74aKMW7aHcP1umVkv2L/Duklh8fVwVQNr Pcpbc0n64cU5BOB/bSyplnYN3YPIt8yk/iUSTK8bl+s+2x/6MlWSyo7V3GZ3gpSx9UE3uA gh+RK4WdLo/ULt2WCrY5FvtXZfV47js= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 287F340966; Tue, 7 Jul 2026 04:38:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8369E1F000E9; Tue, 7 Jul 2026 04:38:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783399136; bh=I11t6FBnWMZblAU+RqSXZtxGf/n/Ve62MEApJyBiI2Q=; h=From:To:Cc:Subject:Date; b=mM6yA0+wSaOwfxOsLro7F5LsVoueGmA/4vXvSnJzHVHAfly0zgDiWK0WAzQh4tHZ5 tPhn3yyEtyV+eNCkUXKyFSfQy6VyVBCpcWV2PiBpm9fcmd80GLmF0afk174Uwwgb8t 4SBTndzXQYACVIDKy5IfnhEQ1blsv8OSU8YJ356nFWtE1IMjnSXMwvreQc9UDWI3F+ iuuYZclEy0tLCjg/zFn0luYPtRnZb7K8tPSR5hea9Cbx//N5WU3Zxhf42CFP7nddlQ 381Ui99XvxzozE59snxoHVN68OWO8ujvsMVmtANHI1jRt+m80aBUcKY1vzUfdpdGjv DdnQ16c0bRX4w== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 0/6] mm/damon: update probe hits for runtime parameter commits Date: Mon, 6 Jul 2026 21:38:20 -0700 Message-ID: <20260707043828.97900-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 6tn55xuxkian8c76pmk5ejuucf7kre3d X-Rspamd-Queue-Id: 4D3E1100005 X-Rspamd-Server: rspam01 X-Rspam-User: X-HE-Tag: 1783399137-292922 X-HE-Meta: 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 4p5s3FHA A0rLv79PFK/niKpTadNJlqAmxzNXXkjB96pidkyFQ7m0aNg8ToxaBciOsKDAloSJMKQ5REiMCq/KgmHDA+zWl0Xi/EgdMji7yu0lugHxoMdffLk9kuYdl9EPNYOJe0WB/gNXmsN7pk7aPwsemKB5Ago6UEPGzH3dIlGnrmlZDxL1rudAVC0b4NiDL2wDmAVd4pTJz6ism9MhGbEw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: DAMON users can update DAMON parameters such as sampling and aggregation intervals at runtime. For such changes, monitoring results that depend on the intervals should be properly updated for better accuracy. For example, the access frequency counter (nr_accesses) is updated. The data attribute monitoring counter (probe_hits) is not being updated, though. Do the updates for new parameters. Patches Sequence ================ Patches 1-4 rename functions that are being used for nr_accesses update, to be able to be used for probe_hits without confusion. Patch 5 does the probe_hits update. Patch 6 update damon_probe_hits_mvsum() to cover a corner case from the update for better accuracy. SJ Park (6): mm/damon/core: s/damon_max_nr_accesses()/damon_nr_samples_per_aggr()/ mm/damon/core: s/accesses_bp_to_nr_accesses/sample_bp_to_count/ mm/damon/core: s/nr_accesses_to_accesses_bp/sample_count_to_bp/ mm/damon/core: s/nr_accesses_for_new_attrs/nr_samples_for_new_attrs/ mm/damon/core: update probe hits for new parameter commit mm/damon/core: handle unreset probe_hits in probe_hits_mvsum() include/linux/damon.h | 10 +++--- mm/damon/core.c | 64 ++++++++++++++++++++++++------------- mm/damon/lru_sort.c | 2 +- mm/damon/ops-common.c | 2 +- mm/damon/tests/core-kunit.h | 21 ++++++++---- 5 files changed, 63 insertions(+), 36 deletions(-) base-commit: 9765c7b820c4f11a416d8bc9d402e1914138f64c -- 2.47.3