Docs/ABI/damon: document 'schemes/<s>/tried_regions' sysfs directory

Update DAMON ABI document for the 'tried_regions' directory of DAMON
sysfs interface.

Link: https://lkml.kernel.org/r/20221101220328.95765-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index 08b9df3..13397b8 100644 (file)
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -27,6 +27,10 @@ Description: Writing 'on' or 'off' to this file makes the kdamond starts or
                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.
+               Writing 'update_schemes_tried_regions' to the file updates
+               contents of 'tried_regions' directory of every scheme directory
+               of this kdamond.  Writing 'clear_schemes_tried_regions' to the
+               file removes contents of the 'tried_regions' directory.
 
 What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/pid
 Date:          Mar 2022
@@ -283,3 +287,31 @@ Date:              Mar 2022
 Contact:       SeongJae Park <sj@kernel.org>
 Description:   Reading this file returns the number of the exceed events of
                the scheme's quotas.
+
+What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/start
+Date:          Oct 2022
+Contact:       SeongJae Park <sj@kernel.org>
+Description:   Reading this file returns the start address of a memory region
+               that corresponding DAMON-based Operation Scheme's action has
+               tried to be applied.
+
+What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/end
+Date:          Oct 2022
+Contact:       SeongJae Park <sj@kernel.org>
+Description:   Reading this file returns the end address of a memory region
+               that corresponding DAMON-based Operation Scheme's action has
+               tried to be applied.
+
+What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/nr_accesses
+Date:          Oct 2022
+Contact:       SeongJae Park <sj@kernel.org>
+Description:   Reading this file returns the 'nr_accesses' of a memory region
+               that corresponding DAMON-based Operation Scheme's action has
+               tried to be applied.
+
+What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/age
+Date:          Oct 2022
+Contact:       SeongJae Park <sj@kernel.org>
+Description:   Reading this file returns the 'age' of a memory region that
+               corresponding DAMON-based Operation Scheme's action has tried
+               to be applied.