Docs/ABI/damon: document fail_charge_{num,denom}

Update DAMON ABI document for the DAMOS action failed regions quota charge
ratio control sysfs files.

Link: https://lore.kernel.org/20260428013402.115171-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@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 2424237ebb105cb2e2a8203e1b1b58ac5c9f90b1..213eb87392d884d59be0e73fcb40584476d9ef1b 100644 (file)
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -322,6 +322,18 @@ Contact:   SeongJae Park <sj@kernel.org>
 Description:   Writing to and reading from this file sets and gets the
                goal-based effective quota auto-tuning algorithm to use.
 
+What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/fail_charge_num
+Date:          Mar 2026
+Contact:       SeongJae Park <sj@kernel.org>
+Description:   Writing to and reading from this file sets and gets the
+               action-failed memory quota charging ratio numerator.
+
+What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/fail_charge_denom
+Date:          Mar 2026
+Contact:       SeongJae Park <sj@kernel.org>
+Description:   Writing to and reading from this file sets and gets the
+               action-failed memory quota charging ratio denominator.
+
 What:          /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/sz_permil
 Date:          Mar 2022
 Contact:       SeongJae Park <sj@kernel.org>