From nobody Wed Oct 8 12:39:22 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2708425A2BC; Sat, 28 Jun 2025 16:51:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751129513; cv=none; b=m6+fkizi1xBAqvXkCZtB/frTXoLVbEvBD0clazAY6Ov3KcLVW5TgOsZ1HsOptVi5cWD0ZW7/8jKb+XxoGQZ0H651F04UJcW34XRIcdB1+psSyS5oTqLr/4BZkJNyLj6E/hrwbNXIT4H16Y2wAZPUTjngjD66pPEMS9m1GeH1NQM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751129513; c=relaxed/simple; bh=L6arW2jwx/Rbwfx5uwGlsnD8HGyjJeRRb71lu8RP0Uc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jBNU2rNpWrf/bjhoEdzXWSrt+50BgswYVXOkG4R6DhRUGAQi28TOi92zMWAaEKEl7UWmYW7X+3c/xEnA4wCNXUp39JGh9IlGZ6QNunK46l/oIFvRq+CBj0bZ30PF4JzqF22xZbNe3qOtNoSxA4Yj38lEDXfXEtuIfhtRCbt4mnU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CXUs26kP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CXUs26kP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA9D7C4CEED; Sat, 28 Jun 2025 16:51:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751129513; bh=L6arW2jwx/Rbwfx5uwGlsnD8HGyjJeRRb71lu8RP0Uc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CXUs26kP0UoD7duEu7XVlCCG8xhCD0eEHfGltVLEgEZVFgEIDFdFanNFuwJ8iUfDF JpVITsSKaWKJJ08wGCv7/lAxYizGdicuzw+wb3j+3w0Zz75hKR7Rtqc9LJ9rZWK7kw LRDS+BjfpPWsnlMqWpP0nnu6/l0HPpZGLh+Us/cL/mRs0KM+q9NxR+PqkWUYQbB79K tGSmQBy4A7wGu6adn7ZTFpSejfJPTOtZA88qXYojXlx4vpStbijaGu6iYhbwd8K6FA rlUlYAMnWJ4aypn/N4DuS0OIIlD6cfbQnHJAcMi4xTgeoAbnfsKT32hnE3f/dAHq6Z SxhbcF4v+zcuA== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 05/11] mm/damon/lru_sort: consider age for quota prioritization Date: Sat, 28 Jun 2025 09:51:38 -0700 Message-Id: <20250628165144.55528-6-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250628165144.55528-1-sj@kernel.org> References: <20250628165144.55528-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" DAMON_LRU_SORT is doing under-quota access pattern based regions prioritization using only access frequency. Age of regions is another useful information for distinguishing hot and cold regions. Use it for the prioritization, too. Signed-off-by: SeongJae Park --- mm/damon/lru_sort.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index 4af8fd4a390b..7513ebc6aeef 100644 --- a/mm/damon/lru_sort.c +++ b/mm/damon/lru_sort.c @@ -71,7 +71,7 @@ static struct damos_quota damon_lru_sort_quota =3D { /* Within the quota, mark hotter regions accessed first. */ .weight_sz =3D 0, .weight_nr_accesses =3D 1, - .weight_age =3D 0, + .weight_age =3D 1, }; DEFINE_DAMON_MODULES_DAMOS_TIME_QUOTA(damon_lru_sort_quota); =20 --=20 2.39.5