[PATCH 5/6] selftests/damon/_damon_sysfs: support update_schemes_quota_goals

[Maksym Shcherba]

Add update_schemes_quota_goals() method to the Kdamond class in
_damon_sysfs.py, which writes 'update_schemes_quota_goals' to the state
file and reads back the current_value of each quota goal.

Assisted-by: Antigravity:Gemini-3.1-Pro
Signed-off-by: Maksym Shcherba <maksym.shcherba@xxxxxxxxxx>
---
 tools/testing/selftests/damon/_damon_sysfs.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py
index 8b12cc048440..27cd94683f6d 100644
--- a/tools/testing/selftests/damon/_damon_sysfs.py
+++ b/tools/testing/selftests/damon/_damon_sysfs.py
@@ -806,6 +806,21 @@ class Kdamond:
                     goal.effective_bytes = int(content)
         return None
 
+    def update_schemes_quota_goals(self):
+        err = write_file(os.path.join(self.sysfs_dir(), 'state'),
+                         'update_schemes_quota_goals')
+        if err is not None:
+            return err
+        for context in self.contexts:
+            for scheme in context.schemes:
+                for goal in scheme.quota.goals:
+                    content, err = read_file(
+                            os.path.join(goal.sysfs_dir(), 'current_value'))
+                    if err is not None:
+                        return err
+                    goal.current_value = int(content)
+        return None
+
     def commit(self):
         nr_contexts_file = os.path.join(self.sysfs_dir(),
                 'contexts', 'nr_contexts')
-- 
2.43.0