selftests/damon/sysfs.py: test DAMOS schemes parameters setup

Add DAMON sysfs interface functionality tests for basic DAMOS schemes
parameters setup.

Link: https://lkml.kernel.org/r/20250628160428.53115-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/tools/testing/selftests/damon/sysfs.py b/tools/testing/selftests/damon/sysfs.py
index 3b085268f342cadf6607361552bff8bb4f97e726..e67008fd055dfe330b886a535e84719258877aea 100755 (executable)
--- a/tools/testing/selftests/damon/sysfs.py
+++ b/tools/testing/selftests/damon/sysfs.py
@@ -29,7 +29,9 @@ def main():
     kdamonds = _damon_sysfs.Kdamonds(
             [_damon_sysfs.Kdamond(
                 contexts=[_damon_sysfs.DamonCtx(
-                    targets=[_damon_sysfs.DamonTarget(pid=-1)])])])
+                    targets=[_damon_sysfs.DamonTarget(pid=-1)],
+                    schemes=[_damon_sysfs.Damos()],
+                    )])])
     err = kdamonds.start()
     if err is not None:
         print('kdamond start failed: %s' % err)
@@ -66,8 +68,46 @@ def main():
             { 'pid': 0, 'nr_regions': 0, 'regions_list': []}]:
         fail('adaptive targets', status)
 
-    if ctx['schemes'] != []:
-        fail('schemes')
+    if len(ctx['schemes']) != 1:
+        fail('number of schemes', status)
+
+    scheme = ctx['schemes'][0]
+    if scheme['pattern'] != {
+            'min_sz_region': 0,
+            'max_sz_region': 2**64 - 1,
+            'min_nr_accesses': 0,
+            'max_nr_accesses': 2**32 - 1,
+            'min_age_region': 0,
+            'max_age_region': 2**32 - 1,
+            }:
+        fail('damos pattern', status)
+    if scheme['action'] != 9:   # stat
+        fail('damos action', status)
+    if scheme['apply_interval_us'] != 0:
+        fail('damos apply interval', status)
+    if scheme['target_nid'] != -1:
+        fail('damos target nid', status)
+
+    if scheme['quota'] != {
+            'reset_interval': 0,
+            'ms': 0,
+            'sz': 0,
+            'goals': [],
+            'esz': 0,
+            'weight_sz': 0,
+            'weight_nr_accesses': 0,
+            'weight_age': 0,
+            }:
+        fail('damos quota', status)
+
+    if scheme['wmarks'] != {
+            'metric': 0,
+            'interval': 0,
+            'high': 0,
+            'mid': 0,
+            'low': 0,
+            }:
+        fail('damos wmarks', status)
 
     kdamonds.stop()