The quilt patch titled
Subject: Docs/damon: document damos_migrate_{hot,cold}
has been removed from the -mm tree. Its filename was
docs-damon-document-damos_migrate_hotcold.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: Honggyu Kim <honggyu.kim@xxxxxx>
Subject: Docs/damon: document damos_migrate_{hot,cold}
Date: Fri, 14 Jun 2024 12:00:09 +0900
This patch adds damon description for "migrate_hot" and "migrate_cold"
actions for both usage and design documents as long as a new
"target_nid" knob to set the migration target node.
[sj@xxxxxxxxxx: trivial fixups for DAMOS_MIGRATE_{HOT,COLD} documentation]
Link: https://lkml.kernel.org/r/20240618213630.84846-2-sj@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20240614030010.751-8-honggyu.kim@xxxxxx
Signed-off-by: Honggyu Kim <honggyu.kim@xxxxxx>
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>
Cc: Gregory Price <gregory.price@xxxxxxxxxxxx>
Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Cc: Hyeongtak Ji <hyeongtak.ji@xxxxxx>
Cc: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Rakie Kim <rakie.kim@xxxxxx>
Cc: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/mm/damon/usage.rst | 10 +++++++---
Documentation/mm/damon/design.rst | 4 ++++
2 files changed, 11 insertions(+), 3 deletions(-)
--- a/Documentation/admin-guide/mm/damon/usage.rst~docs-damon-document-damos_migrate_hotcold
+++ a/Documentation/admin-guide/mm/damon/usage.rst
@@ -78,7 +78,7 @@ comma (",").
â?? â?? â?? â?? â?? â?? â?? â?? ...
â?? â?? â?? â?? â?? â?? ...
â?? â?? â?? â?? â?? :ref:`schemes <sysfs_schemes>`/nr_schemes
- â?? â?? â?? â?? â?? â?? :ref:`0 <sysfs_scheme>`/action,apply_interval_us
+ â?? â?? â?? â?? â?? â?? :ref:`0 <sysfs_scheme>`/action,target_nid,apply_interval_us
â?? â?? â?? â?? â?? â?? â?? :ref:`access_pattern <sysfs_access_pattern>`/
â?? â?? â?? â?? â?? â?? â?? â?? sz/min,max
â?? â?? â?? â?? â?? â?? â?? â?? nr_accesses/min,max
@@ -289,14 +289,18 @@ schemes/<N>/
------------
In each scheme directory, five directories (``access_pattern``, ``quotas``,
-``watermarks``, ``filters``, ``stats``, and ``tried_regions``) and two files
-(``action`` and ``apply_interval``) exist.
+``watermarks``, ``filters``, ``stats``, and ``tried_regions``) and three files
+(``action``, ``target_nid`` and ``apply_interval``) exist.
The ``action`` file is for setting and getting the scheme's :ref:`action
<damon_design_damos_action>`. The keywords that can be written to and read
from the file and their meaning are same to those of the list on
:ref:`design doc <damon_design_damos_action>`.
+The ``target_nid`` file is for setting the migration target node, which is
+only meaningful when the ``action`` is either ``migrate_hot`` or
+``migrate_cold``.
+
The ``apply_interval_us`` file is for setting and getting the scheme's
:ref:`apply_interval <damon_design_damos>` in microseconds.
--- a/Documentation/mm/damon/design.rst~docs-damon-document-damos_migrate_hotcold
+++ a/Documentation/mm/damon/design.rst
@@ -325,6 +325,10 @@ that supports each action are as below.
Supported by ``paddr`` operations set.
- ``lru_deprio``: Deprioritize the region on its LRU lists.
Supported by ``paddr`` operations set.
+ - ``migrate_hot``: Migrate the regions prioritizing warmer regions.
+ Supported by ``paddr`` operations set.
+ - ``migrate_cold``: Migrate the regions prioritizing colder regions.
+ Supported by ``paddr`` operations set.
- ``stat``: Do nothing but count the statistics.
Supported by all operations sets.
_
Patches currently in -mm which might be from honggyu.kim@xxxxxx are
