linux-kernel - [PATCH 09/22] selftests/damon/drgn_dump_damon_status: dump damos->migrate

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Message-Id: <20250720171652.92309-10-sj@kernel.org>
Date: Sun, 20 Jul 2025 10:16:39 -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 09/22] selftests/damon/drgn_dump_damon_status: dump damos->migrate_dests

drgn_dump_damon_status.py is a script for dumping DAMON internal status
in json format.  It is being used for seeing if DAMON parameters that
are set using _damon_sysfs.py are actually passed to DAMON in the kernel
space.  It is, however, not dumping full DAMON internal status, and it
makes increasing test coverage difficult.  Add damos->migrate_dests
dumping for more tests.

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

diff --git a/tools/testing/selftests/damon/drgn_dump_damon_status.py b/tools/testing/selftests/damon/drgn_dump_damon_status.py
index 333a0d0c4bff..8db081f965f5 100755
--- a/tools/testing/selftests/damon/drgn_dump_damon_status.py
+++ b/tools/testing/selftests/damon/drgn_dump_damon_status.py
@@ -117,6 +117,19 @@ def damos_watermarks_to_dict(watermarks):
         ['high', int], ['mid', int], ['low', int],
         ])
 
+def damos_migrate_dests_to_dict(dests):
+    nr_dests = int(dests.nr_dests)
+    node_id_arr = []
+    weight_arr = []
+    for i in range(nr_dests):
+        node_id_arr.append(int(dests.node_id_arr[i]))
+        weight_arr.append(int(dests.weight_arr[i]))
+    return {
+            'node_id_arr': node_id_arr,
+            'weight_arr': weight_arr,
+            'nr_dests': nr_dests,
+            }
+
 def scheme_to_dict(scheme):
     return to_dict(scheme, [
         ['pattern', damos_access_pattern_to_dict],
@@ -125,6 +138,7 @@ def scheme_to_dict(scheme):
         ['quota', damos_quota_to_dict],
         ['wmarks', damos_watermarks_to_dict],
         ['target_nid', int],
+        ['migrate_dests', damos_migrate_dests_to_dict],
         ])
 
 def schemes_to_list(schemes):
-- 
2.39.5