linux-kernel - [PATCH 05/22] selftests/damon/_damon_sysfs: support DAMOS quota goal nid setup

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Message-Id: <20250720171652.92309-6-sj@kernel.org>
Date: Sun, 20 Jul 2025 10:16:35 -0700
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	damon@...ts.linux.dev,
	kernel-team@...a.com,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 05/22] selftests/damon/_damon_sysfs: support DAMOS quota goal nid setup

_damon_sysfs.py contains code for test-purpose DAMON sysfs interface
control.  Add support of DAMOS quota goal nid setup for more tests.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 tools/testing/selftests/damon/_damon_sysfs.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py
index 12d076260b2b..23de9202b4e3 100644
--- a/tools/testing/selftests/damon/_damon_sysfs.py
+++ b/tools/testing/selftests/damon/_damon_sysfs.py
@@ -93,14 +93,16 @@ class DamosQuotaGoal:
     metric = None
     target_value = None
     current_value = None
+    nid = None
     effective_bytes = None
     quota = None            # owner quota
     idx = None
 
-    def __init__(self, metric, target_value=10000, current_value=0):
+    def __init__(self, metric, target_value=10000, current_value=0, nid=0):
         self.metric = metric
         self.target_value = target_value
         self.current_value = current_value
+        self.nid = nid
 
     def sysfs_dir(self):
         return os.path.join(self.quota.sysfs_dir(), 'goals', '%d' % self.idx)
@@ -118,6 +120,10 @@ class DamosQuotaGoal:
                          self.current_value)
         if err is not None:
             return err
+        err = write_file(os.path.join(self.sysfs_dir(), 'nid'), self.nid)
+        if err is not None:
+            return err
+
         return None
 
 class DamosQuota:
-- 
2.39.5