From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,yunjeong.mun@sk.com,corbet@lwn.net,sj@kernel.org,akpm@linux-foundation.org
Subject: [merged mm-stable] docs-mm-damon-design-document-node_mem_usedfree_bp.patch removed from -mm tree
Date: Mon, 12 May 2025 23:53:23 -0700 [thread overview]
Message-ID: <20250513065324.3810DC4CEE4@smtp.kernel.org> (raw)
The quilt patch titled
Subject: Docs/mm/damon/design: document node_mem_{used,free}_bp
has been removed from the -mm tree. Its filename was
docs-mm-damon-design-document-node_mem_usedfree_bp.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: Docs/mm/damon/design: document node_mem_{used,free}_bp
Date: Sun, 20 Apr 2025 12:40:27 -0700
Add description of DAMOS quota goal metrics for NUMA node utilization on
the DAMON deesign document.
Link: https://lkml.kernel.org/r/20250420194030.75838-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Yunjeong Mun <yunjeong.mun@sk.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
Documentation/mm/damon/design.rst | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
--- a/Documentation/mm/damon/design.rst~docs-mm-damon-design-document-node_mem_usedfree_bp
+++ a/Documentation/mm/damon/design.rst
@@ -550,10 +550,10 @@ aggressiveness (the quota) of the corres
is under achieving the goal, DAMOS automatically increases the quota. If DAMOS
is over achieving the goal, it decreases the quota.
-The goal can be specified with three parameters, namely ``target_metric``,
-``target_value``, and ``current_value``. The auto-tuning mechanism tries to
-make ``current_value`` of ``target_metric`` be same to ``target_value``.
-Currently, two ``target_metric`` are provided.
+The goal can be specified with four parameters, namely ``target_metric``,
+``target_value``, ``current_value`` and ``nid``. The auto-tuning mechanism
+tries to make ``current_value`` of ``target_metric`` be same to
+``target_value``.
- ``user_input``: User-provided value. Users could use any metric that they
has interest in for the value. Use space main workload's latency or
@@ -565,6 +565,11 @@ Currently, two ``target_metric`` are pro
in microseconds that measured from last quota reset to next quota reset.
DAMOS does the measurement on its own, so only ``target_value`` need to be
set by users at the initial time. In other words, DAMOS does self-feedback.
+- ``node_mem_used_bp``: Specific NUMA node's used memory ratio in bp (1/10,000).
+- ``node_mem_free_bp``: Specific NUMA node's free memory ratio in bp (1/10,000).
+
+``nid`` is optionally required for only ``node_mem_used_bp`` and
+``node_mem_free_bp`` to point the specific NUMA node.
To know how user-space can set the tuning goal metric, the target value, and/or
the current value via :ref:`DAMON sysfs interface <sysfs_interface>`, refer to
_
Patches currently in -mm which might be from sj@kernel.org are
mm-damon-core-warn-and-fix-nr_accesses-corruption.patch
mm-damon-sysfs-schemes-fix-wrong-comment-on-damons_sysfs_quota_goal_metric_strs.patch
mm-damon-paddr-remove-unused-variable-folio_list-in-damon_pa_stat.patch
mm-damon-tests-core-kunit-add-a-test-for-damos_set_filters_default_reject.patch
selftests-damon-_damon_sysfs-read-tried-regions-directories-in-order.patch
docs-damon-update-titles-and-brief-introductions-to-explain-damos.patch
reply other threads:[~2025-05-13 6:53 UTC|newest]
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