[RFC PATCH 4/6] selftests/damon/drgn_dump_damon_status: dump probes

[SJ Park <sj@kernel.org>]

Extend drgn_dump_damon_status.py to dump damon_ctx->probes.  It will be
used to see if in-kernel DAMON status are changed as the user sets the
probes via sysfs.

Signed-off-by: SJ Park <sj@kernel.org>
---
 .../selftests/damon/drgn_dump_damon_status.py | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/tools/testing/selftests/damon/drgn_dump_damon_status.py b/tools/testing/selftests/damon/drgn_dump_damon_status.py
index 09552e91bc782..4622046fd0118 100755
--- a/tools/testing/selftests/damon/drgn_dump_damon_status.py
+++ b/tools/testing/selftests/damon/drgn_dump_damon_status.py
@@ -48,6 +48,37 @@ def attrs_to_dict(attrs):
         ['max_nr_regions', int],
         ])
 
+def filter_to_dict(damon_filter):
+    filter_type_keyword = {
+            0: 'anon',
+            1: 'memcg',
+            }
+    dict_ = {
+            'type': filter_type_keyword[int(damon_filter.type)],
+            'matching': bool(damon_filter.matching),
+            'allow': bool(damon_filter.allow),
+            }
+    type_ = dict_['type']
+    if type_ == 'memcg':
+        dict_['memcg_id'] = int(damon_filter.memcg_id)
+    return dict_
+
+def filters_to_list(filters):
+    return [filter_to_dict(f)
+            for f in list_for_each_entry(
+                'struct damon_filter', filters.address_of_(), 'list')]
+
+def probe_to_dict(probe):
+    return to_dict(probe, [
+        ['weight', int],
+        ['filters', filters_to_list],
+        ])
+
+def probes_to_list(probes):
+    return [probe_to_dict(p)
+            for p in list_for_each_entry(
+                'struct damon_probe', probes.address_of_(), 'list')]
+
 def addr_range_to_dict(addr_range):
     return to_dict(addr_range, [
         ['start', int],
@@ -199,6 +230,7 @@ def damon_ctx_to_dict(ctx):
     return to_dict(ctx, [
         ['ops', ops_to_dict],
         ['attrs', attrs_to_dict],
+        ['probes', probes_to_list],
         ['adaptive_targets', targets_to_list],
         ['schemes', schemes_to_list],
         ['pause', bool],
-- 
2.47.3