diff options
Diffstat (limited to 'tools/testing/selftests/damon')
| -rw-r--r-- | tools/testing/selftests/damon/Makefile | 13 | ||||
| -rw-r--r-- | tools/testing/selftests/damon/_damon_sysfs.py | 177 | ||||
| -rw-r--r-- | tools/testing/selftests/damon/access_memory.c | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/damon/damos_quota_goal.py | 77 |
4 files changed, 222 insertions, 47 deletions
diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile index 789d6949c2..29a22f50e7 100644 --- a/tools/testing/selftests/damon/Makefile +++ b/tools/testing/selftests/damon/Makefile @@ -7,16 +7,21 @@ TEST_GEN_FILES += debugfs_target_ids_pid_leak TEST_GEN_FILES += access_memory TEST_FILES = _chk_dependency.sh _debugfs_common.sh + +# functionality tests TEST_PROGS = debugfs_attrs.sh debugfs_schemes.sh debugfs_target_ids.sh +TEST_PROGS += sysfs.sh +TEST_PROGS += sysfs_update_schemes_tried_regions_wss_estimation.py +TEST_PROGS += damos_quota.py damos_quota_goal.py damos_apply_interval.py +TEST_PROGS += reclaim.sh lru_sort.sh + +# regression tests (reproducers of previously found bugs) TEST_PROGS += debugfs_empty_targets.sh debugfs_huge_count_read_write.sh TEST_PROGS += debugfs_duplicate_context_creation.sh TEST_PROGS += debugfs_rm_non_contexts.sh TEST_PROGS += debugfs_target_ids_read_before_terminate_race.sh TEST_PROGS += debugfs_target_ids_pid_leak.sh -TEST_PROGS += sysfs.sh sysfs_update_removed_scheme_dir.sh +TEST_PROGS += sysfs_update_removed_scheme_dir.sh TEST_PROGS += sysfs_update_schemes_tried_regions_hang.py -TEST_PROGS += sysfs_update_schemes_tried_regions_wss_estimation.py -TEST_PROGS += damos_quota.py damos_apply_interval.py -TEST_PROGS += reclaim.sh lru_sort.sh include ../lib.mk diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index fe77d7e73a..2bd44c32be 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -2,7 +2,18 @@ import os -sysfs_root = '/sys/kernel/mm/damon/admin' +ksft_skip=4 + +sysfs_root = None +with open('/proc/mounts', 'r') as f: + for line in f: + dev_name, mount_point, dev_fs = line.split()[:3] + if dev_fs == 'sysfs': + sysfs_root = '%s/kernel/mm/damon/admin' % mount_point + break +if sysfs_root is None: + print('Seems sysfs not mounted?') + exit(ksft_skip) def write_file(path, string): "Returns error string if failed, or None otherwise" @@ -34,11 +45,11 @@ class DamosAccessPattern: self.nr_accesses = nr_accesses self.age = age - if self.size == None: + if self.size is None: self.size = [0, 2**64 - 1] - if self.nr_accesses == None: + if self.nr_accesses is None: self.nr_accesses = [0, 2**64 - 1] - if self.age == None: + if self.age is None: self.age = [0, 2**64 - 1] def sysfs_dir(self): @@ -47,55 +58,109 @@ class DamosAccessPattern: def stage(self): err = write_file( os.path.join(self.sysfs_dir(), 'sz', 'min'), self.size[0]) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.sysfs_dir(), 'sz', 'max'), self.size[1]) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'nr_accesses', 'min'), self.nr_accesses[0]) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'nr_accesses', 'max'), self.nr_accesses[1]) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.sysfs_dir(), 'age', 'min'), self.age[0]) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.sysfs_dir(), 'age', 'max'), self.age[1]) - if err != None: + if err is not None: return err +qgoal_metric_user_input = 'user_input' +qgoal_metric_some_mem_psi_us = 'some_mem_psi_us' +qgoal_metrics = [qgoal_metric_user_input, qgoal_metric_some_mem_psi_us] + +class DamosQuotaGoal: + metric = None + target_value = None + current_value = None + effective_bytes = None + quota = None # owner quota + idx = None + + def __init__(self, metric, target_value=10000, current_value=0): + self.metric = metric + self.target_value = target_value + self.current_value = current_value + + def sysfs_dir(self): + return os.path.join(self.quota.sysfs_dir(), 'goals', '%d' % self.idx) + + def stage(self): + err = write_file(os.path.join(self.sysfs_dir(), 'target_metric'), + self.metric) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'target_value'), + self.target_value) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'current_value'), + self.current_value) + if err is not None: + return err + return None + class DamosQuota: sz = None # size quota, in bytes ms = None # time quota + goals = None # quota goals reset_interval_ms = None # quota reset interval scheme = None # owner scheme - def __init__(self, sz=0, ms=0, reset_interval_ms=0): + def __init__(self, sz=0, ms=0, goals=None, reset_interval_ms=0): self.sz = sz self.ms = ms self.reset_interval_ms = reset_interval_ms + self.goals = goals if goals is not None else [] + for idx, goal in enumerate(self.goals): + goal.idx = idx + goal.quota = self def sysfs_dir(self): return os.path.join(self.scheme.sysfs_dir(), 'quotas') def stage(self): err = write_file(os.path.join(self.sysfs_dir(), 'bytes'), self.sz) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'ms'), self.ms) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'reset_interval_ms'), self.reset_interval_ms) - if err != None: + if err is not None: return err + nr_goals_file = os.path.join(self.sysfs_dir(), 'goals', 'nr_goals') + content, err = read_file(nr_goals_file) + if err is not None: + return err + if int(content) != len(self.goals): + err = write_file(nr_goals_file, len(self.goals)) + if err is not None: + return err + for goal in self.goals: + err = goal.stage() + if err is not None: + return err + return None + class DamosStats: nr_tried = None sz_tried = None @@ -136,30 +201,30 @@ class Damos: def stage(self): err = write_file(os.path.join(self.sysfs_dir(), 'action'), self.action) - if err != None: + if err is not None: return err err = self.access_pattern.stage() - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'apply_interval_us'), '%d' % self.apply_interval_us) - if err != None: + if err is not None: return err err = self.quota.stage() - if err != None: + if err is not None: return err # disable watermarks err = write_file( os.path.join(self.sysfs_dir(), 'watermarks', 'metric'), 'none') - if err != None: + if err is not None: return err # disable filters err = write_file( os.path.join(self.sysfs_dir(), 'filters', 'nr_filters'), '0') - if err != None: + if err is not None: return err class DamonTarget: @@ -178,7 +243,7 @@ class DamonTarget: def stage(self): err = write_file( os.path.join(self.sysfs_dir(), 'regions', 'nr_regions'), '0') - if err != None: + if err is not None: return err return write_file( os.path.join(self.sysfs_dir(), 'pid_target'), self.pid) @@ -210,27 +275,27 @@ class DamonAttrs: def stage(self): err = write_file(os.path.join(self.interval_sysfs_dir(), 'sample_us'), self.sample_us) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.interval_sysfs_dir(), 'aggr_us'), self.aggr_us) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.interval_sysfs_dir(), 'update_us'), self.update_us) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.nr_regions_range_sysfs_dir(), 'min'), self.min_nr_regions) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.nr_regions_range_sysfs_dir(), 'max'), self.max_nr_regions) - if err != None: + if err is not None: return err class DamonCtx: @@ -264,24 +329,24 @@ class DamonCtx: def stage(self): err = write_file( os.path.join(self.sysfs_dir(), 'operations'), self.ops) - if err != None: + if err is not None: return err err = self.monitoring_attrs.stage() - if err != None: + if err is not None: return err nr_targets_file = os.path.join( self.sysfs_dir(), 'targets', 'nr_targets') content, err = read_file(nr_targets_file) - if err != None: + if err is not None: return err if int(content) != len(self.targets): err = write_file(nr_targets_file, '%d' % len(self.targets)) - if err != None: + if err is not None: return err for target in self.targets: err = target.stage() - if err != None: + if err is not None: return err nr_schemes_file = os.path.join( @@ -291,11 +356,11 @@ class DamonCtx: return err if int(content) != len(self.schemes): err = write_file(nr_schemes_file, '%d' % len(self.schemes)) - if err != None: + if err is not None: return err for scheme in self.schemes: err = scheme.stage() - if err != None: + if err is not None: return err return None @@ -319,16 +384,16 @@ class Kdamond: nr_contexts_file = os.path.join(self.sysfs_dir(), 'contexts', 'nr_contexts') content, err = read_file(nr_contexts_file) - if err != None: + if err is not None: return err if int(content) != len(self.contexts): err = write_file(nr_contexts_file, '%d' % len(self.contexts)) - if err != None: + if err is not None: return err for context in self.contexts: err = context.stage() - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'on') return err @@ -336,20 +401,20 @@ class Kdamond: def update_schemes_tried_bytes(self): err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'update_schemes_tried_bytes') - if err != None: + if err is not None: return err for context in self.contexts: for scheme in context.schemes: content, err = read_file(os.path.join(scheme.sysfs_dir(), 'tried_regions', 'total_bytes')) - if err != None: + if err is not None: return err scheme.tried_bytes = int(content) def update_schemes_stats(self): err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'update_schemes_stats') - if err != None: + if err is not None: return err for context in self.contexts: for scheme in context.schemes: @@ -358,11 +423,39 @@ class Kdamond: 'sz_applied', 'qt_exceeds']: content, err = read_file( os.path.join(scheme.sysfs_dir(), 'stats', stat)) - if err != None: + if err is not None: return err stat_values.append(int(content)) scheme.stats = DamosStats(*stat_values) + def update_schemes_effective_quotas(self): + err = write_file(os.path.join(self.sysfs_dir(), 'state'), + 'update_schemes_effective_quotas') + if err is not None: + return err + for context in self.contexts: + for scheme in context.schemes: + for goal in scheme.quota.goals: + content, err = read_file( + os.path.join(scheme.quota.sysfs_dir(), + 'effective_bytes')) + if err is not None: + return err + goal.effective_bytes = int(content) + return None + + def commit_schemes_quota_goals(self): + for context in self.contexts: + for scheme in context.schemes: + for goal in scheme.quota.goals: + err = goal.stage() + if err is not None: + print('commit_schemes_quota_goals failed stagign: %s'% + err) + exit(1) + return write_file(os.path.join(self.sysfs_dir(), 'state'), + 'commit_schemes_quota_goals') + class Kdamonds: kdamonds = [] @@ -378,10 +471,10 @@ class Kdamonds: def start(self): err = write_file(os.path.join(self.sysfs_dir(), 'nr_kdamonds'), '%s' % len(self.kdamonds)) - if err != None: + if err is not None: return err for kdamond in self.kdamonds: err = kdamond.start() - if err != None: + if err is not None: return err return None diff --git a/tools/testing/selftests/damon/access_memory.c b/tools/testing/selftests/damon/access_memory.c index 585a2fa543..56b17e8fe1 100644 --- a/tools/testing/selftests/damon/access_memory.c +++ b/tools/testing/selftests/damon/access_memory.c @@ -35,7 +35,7 @@ int main(int argc, char *argv[]) start_clock = clock(); while ((clock() - start_clock) * 1000 / CLOCKS_PER_SEC < access_time_ms) - memset(regions[i], i, 1024 * 1024 * 10); + memset(regions[i], i, sz_region); } return 0; } diff --git a/tools/testing/selftests/damon/damos_quota_goal.py b/tools/testing/selftests/damon/damos_quota_goal.py new file mode 100644 index 0000000000..18246f3b62 --- /dev/null +++ b/tools/testing/selftests/damon/damos_quota_goal.py @@ -0,0 +1,77 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import subprocess +import time + +import _damon_sysfs + +def main(): + # access two 10 MiB memory regions, 2 second per each + sz_region = 10 * 1024 * 1024 + proc = subprocess.Popen(['./access_memory', '2', '%d' % sz_region, '2000']) + + goal = _damon_sysfs.DamosQuotaGoal( + metric=_damon_sysfs.qgoal_metric_user_input, target_value=10000) + kdamonds = _damon_sysfs.Kdamonds([_damon_sysfs.Kdamond( + contexts=[_damon_sysfs.DamonCtx( + ops='vaddr', + targets=[_damon_sysfs.DamonTarget(pid=proc.pid)], + schemes=[_damon_sysfs.Damos( + action='stat', + quota=_damon_sysfs.DamosQuota( + goals=[goal], reset_interval_ms=100), + )] # schemes + )] # contexts + )]) # kdamonds + + err = kdamonds.start() + if err != None: + print('kdamond start failed: %s' % err) + exit(1) + + score_values_to_test = [0, 15000, 5000, 18000] + while proc.poll() == None: + if len(score_values_to_test) == 0: + time.sleep(0.1) + continue + + goal.current_value = score_values_to_test.pop(0) + expect_increase = goal.current_value < goal.target_value + + err = kdamonds.kdamonds[0].commit_schemes_quota_goals() + if err is not None: + print('commit_schemes_quota_goals failed: %s' % err) + exit(1) + + err = kdamonds.kdamonds[0].update_schemes_effective_quotas() + if err is not None: + print('before-update_schemes_effective_quotas failed: %s' % err) + exit(1) + last_effective_bytes = goal.effective_bytes + + time.sleep(0.5) + + err = kdamonds.kdamonds[0].update_schemes_effective_quotas() + if err is not None: + print('after-update_schemes_effective_quotas failed: %s' % err) + exit(1) + + print('score: %s, effective quota: %d -> %d (%.3fx)' % ( + goal.current_value, last_effective_bytes, goal.effective_bytes, + goal.effective_bytes / last_effective_bytes + if last_effective_bytes != 0 else -1.0)) + + if last_effective_bytes == goal.effective_bytes: + print('efective bytes not changed: %d' % goal.effective_bytes) + exit(1) + + increased = last_effective_bytes < goal.effective_bytes + if expect_increase != increased: + print('expectation of increase (%s) != increased (%s)' % + (expect_increase, increased)) + exit(1) + last_effective_bytes = goal.effective_bytes + +if __name__ == '__main__': + main() |