diff mbox series

[RFC,v2,11/11] Docs/ABI/damon: document scheme filters files

Message ID 20221130200937.118005-12-sj@kernel.org
State New
Headers
Series implement DAMOS filtering for anon pages and |

Commit Message

SeongJae Park Nov. 30, 2022, 8:09 p.m. UTC 
  Document newly added DAMON sysfs interface files for DAMOS filtering on
the DAMON ABI document.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 .../ABI/testing/sysfs-kernel-mm-damon         | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
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Patch

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index 13397b853692..2744f21b5a6b 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -258,6 +258,35 @@  Contact:	SeongJae Park <sj@kernel.org>
 Description:	Writing to and reading from this file sets and gets the low
 		watermark of the scheme in permil.
 
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/nr_filters
+Date:		Dec 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number 'N' to this file creates the number of
+		directories for setting filters of the scheme named '0' to
+		'N-1' under the filters/ directory.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/type
+Date:		Dec 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the type of
+		the memory of the interest.  'anon' for anonymous pages, or
+		'memcg' for specific memory cgroup can be written and read.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/memcg_path
+Date:		Dec 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	If 'memcg' is written to the 'type' file, writing to and
+		reading from this file sets and gets the path to the memory
+		cgroup of the interest.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/matching
+Date:		Dec 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing 'Y' or 'N' to this file sets whether to filter out
+		pages that do or do not match to the 'type' and 'memcg_path',
+		respectively.  Filter out means the action of the scheme will
+		not be applied to.
+
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_tried
 Date:		Mar 2022
 Contact:	SeongJae Park <sj@kernel.org>