[PATCH v2 0/4] Docs/ABI/damon: sysfs ABI document fixes and additions

[PATCH v2 0/4] Docs/ABI/damon: sysfs ABI document fixes and additions

[SJ Park]

This series fixes typos and fills in missing entries in the DAMON
sysfs ABI document (Documentation/ABI/testing/sysfs-kernel-mm-damon).

Patch 1 fixes a path typo, "intrvals_goal" -> "intervals_goal", in
four What: entries; the documented path points to a non-existent
directory, so it is Cc'ed to stable.

Patch 2 fixes two further typos ("WDate:", "manimum").

Patches 3 and 4 add ABI entries that exist in the kernel and are
already described in usage.rst but are missing from the canonical ABI
document: the 'update_tuned_intervals' state command (patch 3) and the
'tried_regions/<R>/probes/<P>/hits' file (patch 4).

Changes from v1
- v1: https://lore.kernel.org/20260710044737.561102-1-husong@kylinos.cn
- Rebase to latest mm-new.

Song Hu (4):
  Docs/ABI/damon: fix typo in intervals_goal sysfs path
  Docs/ABI/damon: fix typos
  Docs/ABI/damon: document update_tuned_intervals state command
  Docs/ABI/damon: document tried_regions probe hits

 .../ABI/testing/sysfs-kernel-mm-damon         | 29 ++++++++++++++-----
 1 file changed, 22 insertions(+), 7 deletions(-)


base-commit: 4c3e511167ba60f3934a530fa5675143a09eb909
-- 
2.47.3

[PATCH v2 1/4] Docs/ABI/damon: fix typo in intervals_goal sysfs path

[SJ Park]

From: Song Hu <husong@kylinos.cn>

The ABI document spells the DAMON sysfs directory as "intrvals_goal"
(missing 'e') in four What: entries, but the kernel creates it as
"intervals_goal" (mm/damon/sysfs.c).  Following the documented path
therefore yields a non-existent directory.

Fixes: e2b23dc62369 ("Docs/ABI/damon: document intervals auto-tuning ABI")
Cc: stable@vger.kernel.org
Signed-off-by: Song Hu <husong@kylinos.cn>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: SJ Park <sj@kernel.org>
---
 Documentation/ABI/testing/sysfs-kernel-mm-damon | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index 907a504fb64c5..a8269123b4231 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -112,7 +112,7 @@ Description:	Writing a value to this file sets the update interval of the
 		DAMON context in microseconds as the value.  Reading this file
 		returns the value.
 
-What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/access_bp
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intervals_goal/access_bp
 Date:		Feb 2025
 Contact:	SJ Park <sj@kernel.org>
 Description:	Writing a value to this file sets the monitoring intervals
@@ -120,7 +120,7 @@ Description:	Writing a value to this file sets the monitoring intervals
 		the given time interval (aggrs in same directory), in bp
 		(1/10,000).  Reading this file returns the value.
 
-What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/aggrs
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intervals_goal/aggrs
 Date:		Feb 2025
 Contact:	SJ Park <sj@kernel.org>
 Description:	Writing a value to this file sets the time interval to achieve
@@ -128,14 +128,14 @@ Description:	Writing a value to this file sets the time interval to achieve
 		access events ratio (access_bp in same directory) within.
 		Reading this file returns the value.
 
-What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/min_sample_us
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intervals_goal/min_sample_us
 Date:		Feb 2025
 Contact:	SJ Park <sj@kernel.org>
 Description:	Writing a value to this file sets the minimum value of
 		auto-tuned sampling interval in microseconds.  Reading this
 		file returns the value.
 
-What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/max_sample_us
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intervals_goal/max_sample_us
 Date:		Feb 2025
 Contact:	SJ Park <sj@kernel.org>
 Description:	Writing a value to this file sets the maximum value of
-- 
2.47.3

[PATCH v2 2/4] Docs/ABI/damon: fix typos

[SJ Park]

From: Song Hu <husong@kylinos.cn>

Fix two typos in the DAMON sysfs ABI document:

  - "WDate:" -> "Date:" on the nr_regions/min entry
  - "manimum" -> "minimum" in the nr_accesses/min description

Signed-off-by: Song Hu <husong@kylinos.cn>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: SJ Park <sj@kernel.org>
---
 Documentation/ABI/testing/sysfs-kernel-mm-damon | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index a8269123b4231..f3c99c79b0f57 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -144,7 +144,7 @@ Description:	Writing a value to this file sets the maximum value of
 
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/min
 
-WDate:		Mar 2022
+Date:		Mar 2022
 Contact:	SJ Park <sj@kernel.org>
 Description:	Writing a value to this file sets the minimum number of
 		monitoring regions of the DAMON context as the value.  Reading
@@ -287,7 +287,7 @@ Description:	Writing to and reading from this file sets and gets the maximum
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/min
 Date:		Mar 2022
 Contact:	SJ Park <sj@kernel.org>
-Description:	Writing to and reading from this file sets and gets the manimum
+Description:	Writing to and reading from this file sets and gets the minimum
 		'nr_accesses' of the scheme's target regions.
 
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/max
-- 
2.47.3

[PATCH v2 3/4] Docs/ABI/damon: document update_tuned_intervals state command

[SJ Park]

From: Song Hu <husong@kylinos.cn>

The 'update_tuned_intervals' command of the 'state' file, added in
commit 1077605396b4 ("mm/damon/sysfs: implement a command to update
auto-tuned monitoring intervals"), is described in usage.rst but
missing from the canonical ABI document.  Add it.

Signed-off-by: Song Hu <husong@kylinos.cn>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: SJ Park <sj@kernel.org>
---
 Documentation/ABI/testing/sysfs-kernel-mm-damon | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index f3c99c79b0f57..1507e63ab1711 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -36,7 +36,10 @@ Description:	Writing 'on' or 'off' to this file makes the kdamond starts or
 		kdamond.  Writing 'clear_schemes_tried_regions' to the file
 		removes contents of the 'tried_regions' directory.  Writing
 		'update_schemes_effective_quotas' to the file updates
-		'.../quotas/effective_bytes' files of this kdamond.
+		'.../quotas/effective_bytes' files of this kdamond.  Writing
+		'update_tuned_intervals' to the file updates 'sample_us' and
+		'aggr_us' files under 'monitoring_attrs/intervals' with the
+		auto-tuned sampling and aggregation intervals.
 
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/pid
 Date:		Mar 2022
-- 
2.47.3

[PATCH v2 4/4] Docs/ABI/damon: document tried_regions probe hits

[SJ Park]

From: Song Hu <husong@kylinos.cn>

The 'tried_regions/<R>/probes/<P>/hits' file, added in commit
5b0de1bc3325 ("mm/damon/sysfs-schemes: implement probe/hits file"),
is described in usage.rst but missing from the canonical ABI document.

Document the 'probes/' directory and the 'probes/<P>/hits' file.

Signed-off-by: Song Hu <husong@kylinos.cn>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: SJ Park <sj@kernel.org>
---
 Documentation/ABI/testing/sysfs-kernel-mm-damon | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index 1507e63ab1711..e675a57145e36 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -650,3 +650,15 @@ Contact:	SJ Park <sj@kernel.org>
 Description:	Reading this file returns the size of the memory in the region
 		that passed DAMON operations layer-handled filters of the
 		scheme in bytes.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/probes/
+Date:		May 2026
+Contact:	SJ Park <sj@kernel.org>
+Description:	Directory for DAMON data-attribute monitoring probes of the
+		region.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/probes/<P>/hits
+Date:		May 2026
+Contact:	SJ Park <sj@kernel.org>
+Description:	Reading this file returns the number of data-attribute
+		monitoring probe-hit positive samples of the region.
-- 
2.47.3