tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/usr/bin/env python3
2# SPDX-License-Identifier: GPL-2.0
3
4import json
5import os
6import subprocess
7
8import _damon_sysfs
9
10def dump_damon_status_dict(pid):
11 try:
12 subprocess.check_output(['which', 'drgn'], stderr=subprocess.DEVNULL)
13 except:
14 return None, 'drgn not found'
15 file_dir = os.path.dirname(os.path.abspath(__file__))
16 dump_script = os.path.join(file_dir, 'drgn_dump_damon_status.py')
17 rc = subprocess.call(['drgn', dump_script, pid, 'damon_dump_output'],
18 stderr=subprocess.DEVNULL)
19 if rc != 0:
20 return None, 'drgn fail'
21 try:
22 with open('damon_dump_output', 'r') as f:
23 return json.load(f), None
24 except Exception as e:
25 return None, 'json.load fail (%s)' % e
26
27def fail(expectation, status):
28 print('unexpected %s' % expectation)
29 print(json.dumps(status, indent=4))
30 exit(1)
31
32def assert_true(condition, expectation, status):
33 if condition is not True:
34 fail(expectation, status)
35
36def assert_watermarks_committed(watermarks, dump):
37 wmark_metric_val = {
38 'none': 0,
39 'free_mem_rate': 1,
40 }
41 assert_true(dump['metric'] == wmark_metric_val[watermarks.metric],
42 'metric', dump)
43 assert_true(dump['interval'] == watermarks.interval, 'interval', dump)
44 assert_true(dump['high'] == watermarks.high, 'high', dump)
45 assert_true(dump['mid'] == watermarks.mid, 'mid', dump)
46 assert_true(dump['low'] == watermarks.low, 'low', dump)
47
48def assert_quota_goal_committed(qgoal, dump):
49 metric_val = {
50 'user_input': 0,
51 'some_mem_psi_us': 1,
52 'node_mem_used_bp': 2,
53 'node_mem_free_bp': 3,
54 }
55 assert_true(dump['metric'] == metric_val[qgoal.metric], 'metric', dump)
56 assert_true(dump['target_value'] == qgoal.target_value, 'target_value',
57 dump)
58 if qgoal.metric == 'user_input':
59 assert_true(dump['current_value'] == qgoal.current_value,
60 'current_value', dump)
61 assert_true(dump['nid'] == qgoal.nid, 'nid', dump)
62
63def assert_quota_committed(quota, dump):
64 assert_true(dump['reset_interval'] == quota.reset_interval_ms,
65 'reset_interval', dump)
66 assert_true(dump['ms'] == quota.ms, 'ms', dump)
67 assert_true(dump['sz'] == quota.sz, 'sz', dump)
68 for idx, qgoal in enumerate(quota.goals):
69 assert_quota_goal_committed(qgoal, dump['goals'][idx])
70 assert_true(dump['weight_sz'] == quota.weight_sz_permil, 'weight_sz', dump)
71 assert_true(dump['weight_nr_accesses'] == quota.weight_nr_accesses_permil,
72 'weight_nr_accesses', dump)
73 assert_true(
74 dump['weight_age'] == quota.weight_age_permil, 'weight_age', dump)
75
76
77def assert_migrate_dests_committed(dests, dump):
78 assert_true(dump['nr_dests'] == len(dests.dests), 'nr_dests', dump)
79 for idx, dest in enumerate(dests.dests):
80 assert_true(dump['node_id_arr'][idx] == dest.id, 'node_id', dump)
81 assert_true(dump['weight_arr'][idx] == dest.weight, 'weight', dump)
82
83def assert_filter_committed(filter_, dump):
84 assert_true(filter_.type_ == dump['type'], 'type', dump)
85 assert_true(filter_.matching == dump['matching'], 'matching', dump)
86 assert_true(filter_.allow == dump['allow'], 'allow', dump)
87 # TODO: check memcg_path and memcg_id if type is memcg
88 if filter_.type_ == 'addr':
89 assert_true([filter_.addr_start, filter_.addr_end] ==
90 dump['addr_range'], 'addr_range', dump)
91 elif filter_.type_ == 'target':
92 assert_true(filter_.target_idx == dump['target_idx'], 'target_idx',
93 dump)
94 elif filter_.type_ == 'hugepage_size':
95 assert_true([filter_.min_, filter_.max_] == dump['sz_range'],
96 'sz_range', dump)
97
98def assert_access_pattern_committed(pattern, dump):
99 assert_true(dump['min_sz_region'] == pattern.size[0], 'min_sz_region',
100 dump)
101 assert_true(dump['max_sz_region'] == pattern.size[1], 'max_sz_region',
102 dump)
103 assert_true(dump['min_nr_accesses'] == pattern.nr_accesses[0],
104 'min_nr_accesses', dump)
105 assert_true(dump['max_nr_accesses'] == pattern.nr_accesses[1],
106 'max_nr_accesses', dump)
107 assert_true(dump['min_age_region'] == pattern.age[0], 'min_age_region',
108 dump)
109 assert_true(dump['max_age_region'] == pattern.age[1], 'miaxage_region',
110 dump)
111
112def assert_scheme_committed(scheme, dump):
113 assert_access_pattern_committed(scheme.access_pattern, dump['pattern'])
114 action_val = {
115 'willneed': 0,
116 'cold': 1,
117 'pageout': 2,
118 'hugepage': 3,
119 'nohugeapge': 4,
120 'lru_prio': 5,
121 'lru_deprio': 6,
122 'migrate_hot': 7,
123 'migrate_cold': 8,
124 'stat': 9,
125 }
126 assert_true(dump['action'] == action_val[scheme.action], 'action', dump)
127 assert_true(dump['apply_interval_us'] == scheme. apply_interval_us,
128 'apply_interval_us', dump)
129 assert_true(dump['target_nid'] == scheme.target_nid, 'target_nid', dump)
130 assert_migrate_dests_committed(scheme.dests, dump['migrate_dests'])
131 assert_quota_committed(scheme.quota, dump['quota'])
132 assert_watermarks_committed(scheme.watermarks, dump['wmarks'])
133 # TODO: test filters directory
134 for idx, f in enumerate(scheme.core_filters.filters):
135 assert_filter_committed(f, dump['filters'][idx])
136 for idx, f in enumerate(scheme.ops_filters.filters):
137 assert_filter_committed(f, dump['ops_filters'][idx])
138
139def assert_schemes_committed(schemes, dump):
140 assert_true(len(schemes) == len(dump), 'len_schemes', dump)
141 for idx, scheme in enumerate(schemes):
142 assert_scheme_committed(scheme, dump[idx])
143
144def assert_monitoring_attrs_committed(attrs, dump):
145 assert_true(dump['sample_interval'] == attrs.sample_us, 'sample_interval',
146 dump)
147 assert_true(dump['aggr_interval'] == attrs.aggr_us, 'aggr_interval', dump)
148 assert_true(dump['intervals_goal']['access_bp'] ==
149 attrs.intervals_goal.access_bp, 'access_bp',
150 dump['intervals_goal'])
151 assert_true(dump['intervals_goal']['aggrs'] == attrs.intervals_goal.aggrs,
152 'aggrs', dump['intervals_goal'])
153 assert_true(dump['intervals_goal']['min_sample_us'] ==
154 attrs.intervals_goal.min_sample_us, 'min_sample_us',
155 dump['intervals_goal'])
156 assert_true(dump['intervals_goal']['max_sample_us'] ==
157 attrs.intervals_goal.max_sample_us, 'max_sample_us',
158 dump['intervals_goal'])
159
160 assert_true(dump['ops_update_interval'] == attrs.update_us,
161 'ops_update_interval', dump)
162 assert_true(dump['min_nr_regions'] == attrs.min_nr_regions,
163 'min_nr_regions', dump)
164 assert_true(dump['max_nr_regions'] == attrs.max_nr_regions,
165 'max_nr_regions', dump)
166
167def assert_ctx_committed(ctx, dump):
168 ops_val = {
169 'vaddr': 0,
170 'fvaddr': 1,
171 'paddr': 2,
172 }
173 assert_true(dump['ops']['id'] == ops_val[ctx.ops], 'ops_id', dump)
174 assert_monitoring_attrs_committed(ctx.monitoring_attrs, dump['attrs'])
175 assert_schemes_committed(ctx.schemes, dump['schemes'])
176
177def assert_ctxs_committed(ctxs, dump):
178 assert_true(len(ctxs) == len(dump), 'ctxs length', dump)
179 for idx, ctx in enumerate(ctxs):
180 assert_ctx_committed(ctx, dump[idx])
181
182def main():
183 kdamonds = _damon_sysfs.Kdamonds(
184 [_damon_sysfs.Kdamond(
185 contexts=[_damon_sysfs.DamonCtx(
186 targets=[_damon_sysfs.DamonTarget(pid=-1)],
187 schemes=[_damon_sysfs.Damos()],
188 )])])
189 err = kdamonds.start()
190 if err is not None:
191 print('kdamond start failed: %s' % err)
192 exit(1)
193
194 status, err = dump_damon_status_dict(kdamonds.kdamonds[0].pid)
195 if err is not None:
196 print(err)
197 kdamonds.stop()
198 exit(1)
199
200 assert_ctxs_committed(kdamonds.kdamonds[0].contexts, status['contexts'])
201
202 context = _damon_sysfs.DamonCtx(
203 monitoring_attrs=_damon_sysfs.DamonAttrs(
204 sample_us=100000, aggr_us=2000000,
205 intervals_goal=_damon_sysfs.IntervalsGoal(
206 access_bp=400, aggrs=3, min_sample_us=5000,
207 max_sample_us=10000000),
208 update_us=2000000),
209 schemes=[_damon_sysfs.Damos(
210 action='pageout',
211 access_pattern=_damon_sysfs.DamosAccessPattern(
212 size=[4096, 2**10],
213 nr_accesses=[3, 317],
214 age=[5,71]),
215 quota=_damon_sysfs.DamosQuota(
216 sz=100*1024*1024, ms=100,
217 goals=[_damon_sysfs.DamosQuotaGoal(
218 metric='node_mem_used_bp',
219 target_value=9950,
220 nid=1)],
221 reset_interval_ms=1500,
222 weight_sz_permil=20,
223 weight_nr_accesses_permil=200,
224 weight_age_permil=1000),
225 watermarks=_damon_sysfs.DamosWatermarks(
226 metric = 'free_mem_rate', interval = 500000, # 500 ms
227 high = 500, mid = 400, low = 50),
228 target_nid=1,
229 apply_interval_us=1000000,
230 dests=_damon_sysfs.DamosDests(
231 dests=[_damon_sysfs.DamosDest(id=1, weight=30),
232 _damon_sysfs.DamosDest(id=0, weight=70)]),
233 core_filters=[
234 _damon_sysfs.DamosFilter(type_='addr', matching=True,
235 allow=False, addr_start=42,
236 addr_end=4242),
237 ],
238 ops_filters=[
239 _damon_sysfs.DamosFilter(type_='anon', matching=True,
240 allow=True),
241 ],
242 )])
243 context.idx = 0
244 context.kdamond = kdamonds.kdamonds[0]
245 kdamonds.kdamonds[0].contexts = [context]
246 kdamonds.kdamonds[0].commit()
247
248 status, err = dump_damon_status_dict(kdamonds.kdamonds[0].pid)
249 if err is not None:
250 print(err)
251 exit(1)
252
253 assert_ctxs_committed(kdamonds.kdamonds[0].contexts, status['contexts'])
254
255 # test online commitment of minimum context.
256 context = _damon_sysfs.DamonCtx()
257 context.idx = 0
258 context.kdamond = kdamonds.kdamonds[0]
259 kdamonds.kdamonds[0].contexts = [context]
260 kdamonds.kdamonds[0].commit()
261
262 status, err = dump_damon_status_dict(kdamonds.kdamonds[0].pid)
263 if err is not None:
264 print(err)
265 exit(1)
266
267 assert_ctxs_committed(kdamonds.kdamonds[0].contexts, status['contexts'])
268
269 kdamonds.stop()
270
271if __name__ == '__main__':
272 main()