From nobody Fri Dec 19 19:14:20 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 D3DB056B7E; Mon, 11 Mar 2024 20:45:59 +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=1710189959; cv=none; b=IZxWL5Uqc5dWsjt2u8dGCeZ9JIdsjp9oeoYNQNhJlKukXc4Qz15YJurfg97PZQP2TYVdl/aaV7Jfl4zX3Px3FRAEvbNLEZ0++7cojkm7KvYRpauhEWsu2ueYzLMts7BZ9vk3kx4761Rplu6zRaBY09BJY4ZrqICxlWg34M6KhFo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710189959; c=relaxed/simple; bh=LO88k+dd/BebwXvUzvdC1iypWVc1Mb6U9juVYlKD5Nk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KTYBoIdyiEsq+fHvBrIgXAG8aWxN9TOzRFvP3XO2ZEIEv/jNhzGGsVlC0I/brVhxZ/aJMjADYbPUlFIETsQZOSfITiK5QQFHQkVMEkldmd++rFecR8rIYejFS1R7v6EvlVO/tEevSL2I1R3QF/Q1XgxHip5z0XYKr3lPDdU0eSI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uQNI7zWP; 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="uQNI7zWP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E78B2C43609; Mon, 11 Mar 2024 20:45:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710189959; bh=LO88k+dd/BebwXvUzvdC1iypWVc1Mb6U9juVYlKD5Nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uQNI7zWPftUXcAfchepbgu8pxGBdbSEAdCcgL0ZjBDDyDymzJz0oEGIjl1OL+4pOt vUUdgM/UGEUp+bWCp1PrYYONwHar+psVszUNLtPUFGicKlMIC14alMAomTeoLBXq4d XRX42K0XQUw+pfrz7kvEdLVuEeV3Ro1H5LszW9h9yE52XzWosaYdLX41fQc16Rm/7U 9vWI5p8uNYo+yyJbbQn9XLalmRiILMwr+Y+u9ct79phKv9T9KKMbBHoMZLtdJsYsdX Nm02cMdyHt7eixGAwW9mDAePdrQmDJY0NEfiaDstr/nBbSy7p+j7D6ofARR9C4OLZ9 wEqqUEnKRvp4A== From: SeongJae Park To: Cc: honggyu.kim@sk.com, hyeongtak.ji@sk.com, kernel_team@skhynix.com, SeongJae Park , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v2 3/4] mm/damon: add DAMOS filter type YOUNG Date: Mon, 11 Mar 2024 13:45:44 -0700 Message-Id: <20240311204545.47097-4-sj@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240311204545.47097-1-sj@kernel.org> References: <20240311204545.47097-1-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" Define yet another DAMOS filter type, YOUNG. Like anon and memcg, the type of filter will be applied to each page in the memory region, and check if the page is accessed since the last check. Note that this commit is only defining the type. Implementation of it should be made on DAMON operations sets. A couple of commits for the implementation on 'paddr' DAMON operations set will follow. Signed-off-by: SeongJae Park --- include/linux/damon.h | 2 ++ mm/damon/sysfs-schemes.c | 1 + 2 files changed, 3 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 886d07294f4e..f7da65e1ac04 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -297,6 +297,7 @@ struct damos_stat { * enum damos_filter_type - Type of memory for &struct damos_filter * @DAMOS_FILTER_TYPE_ANON: Anonymous pages. * @DAMOS_FILTER_TYPE_MEMCG: Specific memcg's pages. + * @DAMOS_FILTER_TYPE_YOUNG: Recently accessed pages. * @DAMOS_FILTER_TYPE_ADDR: Address range. * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. * @NR_DAMOS_FILTER_TYPES: Number of filter types. @@ -315,6 +316,7 @@ struct damos_stat { enum damos_filter_type { DAMOS_FILTER_TYPE_ANON, DAMOS_FILTER_TYPE_MEMCG, + DAMOS_FILTER_TYPE_YOUNG, DAMOS_FILTER_TYPE_ADDR, DAMOS_FILTER_TYPE_TARGET, NR_DAMOS_FILTER_TYPES, diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 53a90ac678fb..bea5bc52846a 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -343,6 +343,7 @@ static struct damon_sysfs_scheme_filter *damon_sysfs_sc= heme_filter_alloc(void) static const char * const damon_sysfs_scheme_filter_type_strs[] =3D { "anon", "memcg", + "young", "addr", "target", }; --=20 2.39.2