linux-kernel - [PATCH 22/22] selftests/damon/sysfs.py: test runtime reduction of DAMON parameters

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Message-Id: <20250720171652.92309-23-sj@kernel.org>
Date: Sun, 20 Jul 2025 10:16:52 -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 22/22] selftests/damon/sysfs.py: test runtime reduction of DAMON parameters

sysfs.py is testing if non-default additional parameters can be
committed.  Add a test case for further reducing the parameters to the
default set.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 tools/testing/selftests/damon/sysfs.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tools/testing/selftests/damon/sysfs.py b/tools/testing/selftests/damon/sysfs.py
index b2cb178dda15..e0753ed92a98 100755
--- a/tools/testing/selftests/damon/sysfs.py
+++ b/tools/testing/selftests/damon/sysfs.py
@@ -247,6 +247,20 @@ def main():
 
     assert_ctxs_committed(kdamonds.kdamonds[0].contexts, status['contexts'])
 
+    # test online commitment of minimum context.
+    context = _damon_sysfs.DamonCtx()
+    context.idx = 0
+    context.kdamond = kdamonds.kdamonds[0]
+    kdamonds.kdamonds[0].contexts = [context]
+    kdamonds.kdamonds[0].commit()
+
+    status, err = dump_damon_status_dict(kdamonds.kdamonds[0].pid)
+    if err is not None:
+        print(err)
+        exit(1)
+
+    assert_ctxs_committed(kdamonds.kdamonds[0].contexts, status['contexts'])
+
     kdamonds.stop()
 
 if __name__ == '__main__':
-- 
2.39.5