def put():
"""
Handles HTTP PUT /caps/sstbf request.
Raises BadRequest, InternalError
Returns:
response, status code
"""
json_data = request.get_json()
# validate app schema
try:
schema, resolver = ConfigStore.load_json_schema('modify_sstbf.json')
jsonschema.validate(json_data, schema, resolver=resolver)
except (jsonschema.ValidationError, OverflowError) as error:
raise BadRequest("Request validation failed - %s" % (str(error)))
if not sstbf.configure_sstbf(json_data['configured']) == 0:
raise InternalError("Failed to change SST-BF configured state.")
# update power profile configuration
power.configure_power()
res = {'message': "SST-BF caps modified"}
return res, 200
def event_handler(self):
"""
Handles config_changed event
"""
# rate limiting
last_cfg_change_ts = 0
min_time_diff = 1 / common.RATE_LIMIT
while not self.stop_event.is_set():
if common.CONFIG_STORE.is_config_changed():
time_diff = time.time() - last_cfg_change_ts
if time_diff < min_time_diff:
log.info("Rate Limiter, sleeping " \
+ str(round((min_time_diff - time_diff) * 1000)) + "ms...")
time.sleep(min_time_diff - time_diff)
log.info("Configuration changed, processing new config...")
result = cache_ops.configure_rdt()
if result != 0:
log.error("Failed to apply RDT configuration!")
break
if caps.sstcp_enabled() and not sstbf.is_sstbf_configured():
result = power.configure_power()
if result != 0:
log.error(
"Failed to apply Power Profiles configuration!")
break
last_cfg_change_ts = time.time()
log.info("New configuration processed")
def test_configure_power(self):
pool_ids = [0, 1]
profile_ids = [5, 6]
pool_to_cores = {0: [2, 3], 1: [4, 5]}
pool_to_profiles = {0: 5, 1: 6}
profiles = {
5: {
"min_freq": 1500,
"max_freq": 2500,
"epp": "performance",
"id": 5
},
6: {
"min_freq": 1000,
"max_freq": 1200,
"epp": "power",
"id": 6
}
}
def get_pool_attr(attr, pool_id):
if attr == 'id':
if pool_id is None:
return pool_ids
else:
return None
elif attr == 'cores':
return pool_to_cores[pool_id]
elif attr == 'power_profile':
if pool_id is None:
return profile_ids
else:
return pool_to_profiles[pool_id]
return None
def get_power_profile(id):
return profiles[id]
# ERROR POWER: No Pools configured...
power.PREV_PROFILES.clear()
with mock.patch('common.CONFIG_STORE.get_pool_attr', return_value=None) as mock_get_pool_attr,\
mock.patch('common.CONFIG_STORE.get_power_profile') as mock_get_power_profile,\
mock.patch('power.reset') as mock_reset,\
mock.patch('power._set_freqs_epp') as mock_set_freqs_epp:
assert -1 == power.configure_power()
mock_get_pool_attr.assert_called_once_with('id', None)
mock_get_power_profile.assert_not_called()
mock_reset.assert_not_called()
mock_set_freqs_epp.assert_not_called()
# ERROR POWER: Profile 5 does not exist!
power.PREV_PROFILES.clear()
with mock.patch('common.CONFIG_STORE.get_pool_attr', new=get_pool_attr),\
mock.patch('common.CONFIG_STORE.get_power_profile', return_value=None) as mock_get_power_profile,\
mock.patch('power.reset') as mock_reset,\
mock.patch('power._set_freqs_epp') as mock_set_freqs_epp:
assert -1 == power.configure_power()
mock_get_power_profile.assert_called_once_with(5)
mock_reset.assert_not_called()
mock_set_freqs_epp.assert_not_called()
# All OK!
power.PREV_PROFILES.clear()
with mock.patch('common.CONFIG_STORE.get_pool_attr', new=get_pool_attr),\
mock.patch('common.CONFIG_STORE.get_power_profile', new=get_power_profile),\
mock.patch('power.reset') as mock_reset,\
mock.patch('power._set_freqs_epp') as mock_set_freqs_epp:
assert 0 == power.configure_power()
mock_reset.assert_not_called()
mock_set_freqs_epp.assert_any_call(pool_to_cores[0],
profiles[5]["min_freq"],
profiles[5]["max_freq"],
profiles[5]["epp"])
mock_set_freqs_epp.assert_any_call(pool_to_cores[1],
profiles[6]["min_freq"],
profiles[6]["max_freq"],
profiles[6]["epp"])
# POWER: Skipping Pool 0, no cores assigned
power.PREV_PROFILES.clear()
pool_to_cores[0] = []
with mock.patch('common.CONFIG_STORE.get_pool_attr', new=get_pool_attr),\
mock.patch('common.CONFIG_STORE.get_power_profile', new=get_power_profile),\
mock.patch('power.reset') as mock_reset,\
mock.patch('power._set_freqs_epp') as mock_set_freqs_epp:
assert 0 == power.configure_power()
mock_reset.assert_not_called()
mock_set_freqs_epp.assert_called_once_with(pool_to_cores[1],
profiles[6]["min_freq"],
profiles[6]["max_freq"],
profiles[6]["epp"])
# POWER: Pool 1, no power profile assigned. Resetting to defaults.
power.PREV_PROFILES.clear()
pool_to_profiles[1] = None
with mock.patch('common.CONFIG_STORE.get_pool_attr', new=get_pool_attr),\
mock.patch('common.CONFIG_STORE.get_power_profile', new=get_power_profile),\
mock.patch('power.reset') as mock_reset,\
mock.patch('power._set_freqs_epp') as mock_set_freqs_epp:
assert 0 == power.configure_power()
mock_reset.assert_called_once_with(pool_to_cores[1])
mock_set_freqs_epp.assert_not_called()
def run(self):
"""
Runs main loop.
"""
# process/validate already loaded config file
try:
common.CONFIG_STORE.process_config()
except Exception as ex:
log.error("Invalid config file... ")
log.error(ex)
return
log.debug("Cores controlled: {}".\
format(common.CONFIG_STORE.get_pool_attr('cores', None)))
data = common.CONFIG_STORE.get_config()
for pool in data['pools']:
log.debug("Pool: {}/{} Cores: {}, Apps: {}".format(pool.get('name'),\
pool.get('id'), pool.get('cores'), pool.get('apps')))
# set initial SST-BF configuration
if caps.sstbf_enabled():
result = sstbf.init_sstbf()
if result != 0:
log.error(
"Failed to apply initial SST-BF configuration, terminating..."
)
return
log.info("SST-BF enabled, {}configured.".\
format("not " if not sstbf.is_sstbf_configured() else ""))
log.info("SST-BF HP cores: {}".format(sstbf.get_hp_cores()))
log.info("SST-BF STD cores: {}".format(sstbf.get_std_cores()))
else:
log.info("SST-BF not enabled")
# set initial SST-CP configuration if SST-BF is not configured
if caps.sstcp_enabled():
if sstbf.is_sstbf_configured():
log.info(
"Power Profiles/SST-CP enabled, not configured, SST-BF is configured"
)
else:
log.info("Power Profiles/SST-CP enabled.")
# set initial POWER configuration
result = power.configure_power()
if result != 0:
log.error("Failed to apply initial Power Profiles configuration,"\
" terminating...")
return
else:
log.info("Power Profiles/EPP not enabled")
# set initial RDT configuration
log.info("Configuring RDT")
# Configure MBA CTRL
if caps.mba_supported():
result = common.PQOS_API.enable_mba_bw(
common.CONFIG_STORE.get_mba_ctrl_enabled())
if result != 0:
log.error(
"libpqos MBA CTRL initialization failed, Terminating...")
return
log.info("RDT MBA CTRL %sabled"\
% ("en" if common.PQOS_API.is_mba_bw_enabled() else "dis"))
result = cache_ops.configure_rdt()
if result != 0:
log.error(
"Failed to apply initial RDT configuration, terminating...")
return
# set CTRL+C sig handler
signal.signal(signal.SIGINT, self.signal_handler)
self.event_handler()
log.info("Terminating...")
def run(self, args):
"""
Runs main loop.
Parameters:
args: command line arguments
"""
# load config file
try:
common.CONFIG_STORE.from_file(args.config)
except IOError as ex:
log.error("Error reading from config file {}... ".format(args.config))
log.error(ex)
return
except Exception as ex:
log.error("Invalid config file {}... ".format(args.config))
log.error(ex)
return
log.debug("Cores controlled: {}".\
format(common.CONFIG_STORE.get_pool_attr('cores', None)))
data = common.CONFIG_STORE.get_config()
for pool in data['pools']:
log.debug("Pool: {}/{} Cores: {}, Apps: {}".format(pool.get('name'),\
pool.get('id'), pool.get('cores'), pool.get('apps')))
# set initial SST-BF configuration
if caps.sstbf_enabled():
result = sstbf.init_sstbf()
if result != 0:
log.error("Failed to apply initial SST-BF configuration, terminating...")
return
log.info("SST-BF enabled, {}configured.".\
format("not " if not sstbf.is_sstbf_configured() else ""))
log.info("SST-BF HP cores: {}".format(sstbf.get_hp_cores()))
log.info("SST-BF STD cores: {}".format(sstbf.get_std_cores()))
else:
log.info("SST-BF not enabled")
# set initial SST-CP configuration if SST-BF is not configured
if caps.sstcp_enabled():
if sstbf.is_sstbf_configured():
log.info("Power Profiles/SST-CP enabled, not configured, SST-BF is configured")
else:
log.info("Power Profiles/SST-CP enabled.")
# set initial POWER configuration
result = power.configure_power()
if result != 0:
log.error("Failed to apply initial Power Profiles configuration,"\
" terminating...")
return
else:
log.info("Power Profiles/EPP not enabled")
# set initial RDT configuration
log.info("Configuring RDT")
result = cache_ops.configure_rdt()
if result != 0:
log.error("Failed to apply initial RDT configuration, terminating...")
return
# set CTRL+C sig handler
signal.signal(signal.SIGINT, self.signal_handler)
self.event_handler()
log.info("Terminating...")