Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   sj@kernel.org
To:     akpm@linux-foundation.org
Cc:     linux-damon@amazon.com, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, SeongJae Park <sj@kernel.org>
Subject: [PATCH 12/14] Docs/{ABI,admin-guide}/damon: Update for 'state' sysfs file input keyword, 'commit'
Date:   Fri, 29 Apr 2022 16:06:04 +0000
Message-Id: <20220429160606.127307-13-sj@kernel.org>
In-Reply-To: <20220429160606.127307-1-sj@kernel.org>
References: <20220429160606.127307-1-sj@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: SeongJae Park <sj@kernel.org>

This commit documents the newly added 'state' sysfs file input keyword,
'commit', which allows online tuning of DAMON contexts.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 Documentation/ABI/testing/sysfs-kernel-mm-damon | 7 ++++---
 Documentation/admin-guide/mm/damon/usage.rst    | 9 +++++----
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index fab97ea22569..08b9df323560 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -23,9 +23,10 @@ Date:		Mar 2022
 Contact:	SeongJae Park <sj@kernel.org>
 Description:	Writing 'on' or 'off' to this file makes the kdamond starts or
 		stops, respectively.  Reading the file returns the keywords
-		based on the current status.  Writing 'update_schemes_stats' to
-		the file updates contents of schemes stats files of the
-		kdamond.
+		based on the current status.  Writing 'commit' to this file
+		makes the kdamond reads the user inputs in the sysfs files
+		except 'state' again.  Writing 'update_schemes_stats' to the
+		file updates contents of schemes stats files of the kdamond.
 
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/pid
 Date:		Mar 2022
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index 9c67311a79d8..1bb7b72414b2 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -121,10 +121,11 @@ In each kdamond directory, two files (``state`` and ``pid``) and one directory
 
 Reading ``state`` returns ``on`` if the kdamond is currently running, or
 ``off`` if it is not running.  Writing ``on`` or ``off`` makes the kdamond be
-in the state.  Writing ``update_schemes_stats`` to ``state`` file updates the
-contents of stats files for each DAMON-based operation scheme of the kdamond.
-For details of the stats, please refer to :ref:`stats section
-<sysfs_schemes_stats>`.
+in the state.  Writing ``commit`` to the ``state`` file makes kdamond reads the
+user inputs in the sysfs files except ``state`` file again.  Writing
+``update_schemes_stats`` to ``state`` file updates the contents of stats files
+for each DAMON-based operation scheme of the kdamond.  For details of the
+stats, please refer to :ref:`stats section <sysfs_schemes_stats>`.
 
 If the state is ``on``, reading ``pid`` shows the pid of the kdamond thread.
 
-- 
2.25.1