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 [thread overview]
Message-ID: <20220429160606.127307-13-sj@kernel.org> (raw)
In-Reply-To: <20220429160606.127307-1-sj@kernel.org>
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
next prev parent reply other threads:[~2022-04-29 16:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-29 16:05 [PATCH 00/14] mm/damon: Support online tuning sj
2022-04-29 16:05 ` [PATCH 01/14] mm/damon/core: add a new callback for watermarks checks sj
2022-04-29 16:05 ` [PATCH 02/14] mm/damon/core: finish kdamond as soon as any callback returns an error sj
2022-04-29 16:05 ` [PATCH 03/14] mm/damon/vaddr: generalize damon_va_apply_three_regions() sj
2022-04-29 16:05 ` [PATCH 04/14] mm/damon/vaddr: move 'damon_set_regions()' to core sj
2022-04-29 16:05 ` [PATCH 05/14] mm/damon/vaddr: remove damon_va_apply_three_regions() sj
2022-04-29 16:05 ` [PATCH 06/14] mm/damon/sysfs: prohibit multiple physical address space monitoring targets sj
2022-04-29 16:05 ` [PATCH 07/14] mm/damon/sysfs: move targets setup code to a separated function sj
2022-04-29 16:06 ` [PATCH 08/14] mm/damon/sysfs: reuse damon_set_regions() for regions setting sj
2022-04-29 16:06 ` [PATCH 09/14] mm/damon/sysfs: use enum for 'state' input handling sj
2022-04-29 16:06 ` [PATCH 10/14] mm/damon/sysfs: update schemes stat in the kdamond context sj
2022-04-29 16:06 ` [PATCH 11/14] mm/damon/sysfs: support online inputs update sj
2022-04-29 16:06 ` sj [this message]
2022-04-29 16:06 ` [PATCH 13/14] mm/damon/reclaim: " sj
2022-04-29 16:06 ` [PATCH 14/14] Docs/admin-guide/mm/damon/reclaim: document 'commit_inputs' parameter sj
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220429160606.127307-13-sj@kernel.org \
--to=sj@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=linux-damon@amazon.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox