From nobody Wed Feb 11 04:17:52 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AFBD0EB64DD for ; Fri, 28 Jul 2023 20:35:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235168AbjG1Ufi (ORCPT ); Fri, 28 Jul 2023 16:35:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233923AbjG1UfF (ORCPT ); Fri, 28 Jul 2023 16:35:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9507E4483; Fri, 28 Jul 2023 13:34:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1C1FF621DE; Fri, 28 Jul 2023 20:34:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B4C7C433CA; Fri, 28 Jul 2023 20:34:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690576497; bh=jeC4GAEfQQwmVnTIZskvg6L9vM/nrayE2m9ijer6n98=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kCfYKwe4QL89JDRqiWJGihImM+qcoMbDWecJ7hn5Iu+Tfw0wwq6G5Soa4tXigbIs+ cKRMiMjzFiwRgTa6FFAOyZ/Cj4fLXYlE0wrBytmbm3mQbInHJDivY+r/aUeIdGg3oE Mttwki34KUH6dQ4afT+n7RpDZEfriIuE5WtcfXH3hSOT9fbYJoS/uhCmYL6v6zaHlF 8kHxycb0NP0w8mRdV0JOMb4kDQW6JCY/h32sSZ8ZyZ3iqHTsijHYjs8Co5cqxVWS7F bRGrb21xaEpee+/SLZW1SB2C5OnDQu3NvdTvQg0bZ/zZxF8gJPpGUrIvZB02FSjVjY AEaMp+FQ3zbXQ== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , Jonathan Corbet , damon@lists.linux.dev, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 13/13] Docs/admin-guide/mm/damon/usage: update for DAMON monitoring target type DAMOS filter Date: Fri, 28 Jul 2023 20:34:44 +0000 Message-Id: <20230728203444.70703-14-sj@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230728203444.70703-1-sj@kernel.org> References: <20230728203444.70703-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Update DAMON usage document for newly added DAMON monitoring target type DAMOS filter. Signed-off-by: SeongJae Park --- Documentation/admin-guide/mm/damon/usage.rst | 37 +++++++++++--------- 1 file changed, 20 insertions(+), 17 deletions(-) diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/a= dmin-guide/mm/damon/usage.rst index a9cb9949b796..084f0a32b421 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -363,18 +363,21 @@ number (``N``) to the file creates the number of chil= d directories named ``0`` to ``N-1``. Each directory represents each filter. The filters are evalu= ated in the numeric order. =20 -Each filter directory contains five files, namely ``type``, ``matcing``, -``memcg_path``, ``addr_start``, and ``addr_end``. To ``type`` file, you c= an -write one of three special keywords: ``anon`` for anonymous pages, ``memcg= `` -for specific memory cgroup, or ``addr`` for specific address range (an -open-ended interval) filtering. In case of the memory cgroup filtering, y= ou -can specify the memory cgroup of the interest by writing the path of the m= emory -cgroup from the cgroups mount point to ``memcg_path`` file. In case of the -address range filtering, you can specify the start and end address of the = range -to ``addr_start`` and ``addr_end`` files, respectively. You can write ``Y= `` or -``N`` to ``matching`` file to filter out pages that does or does not match= to -the type, respectively. Then, the scheme's action will not be applied to = the -pages that specified to be filtered out. +Each filter directory contains six files, namely ``type``, ``matcing``, +``memcg_path``, ``addr_start``, ``addr_end``, and ``target_idx``. To ``ty= pe`` +file, you can write one of four special keywords: ``anon`` for anonymous p= ages, +``memcg`` for specific memory cgroup, ``addr`` for specific address range = (an +open-ended interval), or ``target`` for specific DAMON monitoring target +filtering. In case of the memory cgroup filtering, you can specify the me= mory +cgroup of the interest by writing the path of the memory cgroup from the +cgroups mount point to ``memcg_path`` file. In case of the address range +filtering, you can specify the start and end address of the range to +``addr_start`` and ``addr_end`` files, respectively. For the DAMON monito= ring +target filtering, you can specify the index of the target between the list= of +the DAMON context's monitoring targets list to ``target_idx`` file. You c= an +write ``Y`` or ``N`` to ``matching`` file to filter out pages that does or= does +not match to the type, respectively. Then, the scheme's action will not be +applied to the pages that specified to be filtered out. =20 For example, below restricts a DAMOS action to be applied to only non-anon= ymous pages of all memory cgroups except ``/having_care_already``.:: @@ -391,11 +394,11 @@ pages of all memory cgroups except ``/having_care_alr= eady``.:: Note that ``anon`` and ``memcg`` filters are currently supported only when ``paddr`` `implementation ` is being used. =20 -Also, memory regions that are filtered out by ``addr`` filters are not cou= nted -as the scheme has tried to those, while regions that filtered out by other= type -filters are counted as the scheme has tried to. The difference is applied= to -:ref:`stats ` and :ref:`tried regions -`. +Also, memory regions that are filtered out by ``addr`` or ``target`` filte= rs +are not counted as the scheme has tried to those, while regions that filte= red +out by other type filters are counted as the scheme has tried to. The +difference is applied to :ref:`stats ` and +:ref:`tried regions `. =20 .. _sysfs_schemes_stats: =20 --=20 2.25.1