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_access_pattern_committed(pattern, dump): 84 assert_true(dump['min_sz_region'] == pattern.size[0], 'min_sz_region', 85 dump) 86 assert_true(dump['max_sz_region'] == pattern.size[1], 'max_sz_region', 87 dump) 88 assert_true(dump['min_nr_accesses'] == pattern.nr_accesses[0], 89 'min_nr_accesses', dump) 90 assert_true(dump['max_nr_accesses'] == pattern.nr_accesses[1], 91 'max_nr_accesses', dump) 92 assert_true(dump['min_age_region'] == pattern.age[0], 'min_age_region', 93 dump) 94 assert_true(dump['max_age_region'] == pattern.age[1], 'miaxage_region', 95 dump) 96 97def assert_scheme_committed(scheme, dump): 98 assert_access_pattern_committed(scheme.access_pattern, dump['pattern']) 99 action_val = { 100 'willneed': 0, 101 'cold': 1, 102 'pageout': 2, 103 'hugepage': 3, 104 'nohugeapge': 4, 105 'lru_prio': 5, 106 'lru_deprio': 6, 107 'migrate_hot': 7, 108 'migrate_cold': 8, 109 'stat': 9, 110 } 111 assert_true(dump['action'] == action_val[scheme.action], 'action', dump) 112 assert_true(dump['apply_interval_us'] == scheme. apply_interval_us, 113 'apply_interval_us', dump) 114 assert_true(dump['target_nid'] == scheme.target_nid, 'target_nid', dump) 115 assert_migrate_dests_committed(scheme.dests, dump['migrate_dests']) 116 assert_quota_committed(scheme.quota, dump['quota']) 117 assert_watermarks_committed(scheme.watermarks, dump['wmarks']) 118 119def main(): 120 kdamonds = _damon_sysfs.Kdamonds( 121 [_damon_sysfs.Kdamond( 122 contexts=[_damon_sysfs.DamonCtx( 123 targets=[_damon_sysfs.DamonTarget(pid=-1)], 124 schemes=[_damon_sysfs.Damos()], 125 )])]) 126 err = kdamonds.start() 127 if err is not None: 128 print('kdamond start failed: %s' % err) 129 exit(1) 130 131 status, err = dump_damon_status_dict(kdamonds.kdamonds[0].pid) 132 if err is not None: 133 print(err) 134 kdamonds.stop() 135 exit(1) 136 137 if len(status['contexts']) != 1: 138 fail('number of contexts', status) 139 140 ctx = status['contexts'][0] 141 attrs = ctx['attrs'] 142 if attrs['sample_interval'] != 5000: 143 fail('sample interval', status) 144 if attrs['aggr_interval'] != 100000: 145 fail('aggr interval', status) 146 if attrs['ops_update_interval'] != 1000000: 147 fail('ops updte interval', status) 148 149 if attrs['intervals_goal'] != { 150 'access_bp': 0, 'aggrs': 0, 151 'min_sample_us': 0, 'max_sample_us': 0}: 152 fail('intervals goal') 153 154 if attrs['min_nr_regions'] != 10: 155 fail('min_nr_regions') 156 if attrs['max_nr_regions'] != 1000: 157 fail('max_nr_regions') 158 159 if ctx['adaptive_targets'] != [ 160 { 'pid': 0, 'nr_regions': 0, 'regions_list': []}]: 161 fail('adaptive targets', status) 162 163 if len(ctx['schemes']) != 1: 164 fail('number of schemes', status) 165 166 assert_scheme_committed(_damon_sysfs.Damos(), ctx['schemes'][0]) 167 168 kdamonds.stop() 169 170if __name__ == '__main__': 171 main() 172