def test_get(self, lib):
"Tests get() method."
# pylint: disable=invalid-name
def pqos_l3ca_get_mock(socket, cos_num, num_ca_ref, l3cas):
"Mock pqos_l3ca_get()."
self.assertEqual(socket, 1)
self.assertEqual(cos_num, 2)
cos_c = CPqosL3Ca(class_id=0, u=CPqosL3CaMask(ways_mask=0x01fe))
cos2_c = CPqosL3Ca(class_id=1, u=CPqosL3CaMask(ways_mask=0x003f))
cos_arr_c = ctypes_build_array([cos_c, cos2_c])
ctypes.memmove(l3cas, cos_arr_c, ctypes.sizeof(cos_arr_c))
ctypes_ref_set_int(num_ca_ref, len(cos_arr_c))
return 0
lib.pqos_l3ca_get = MagicMock(side_effect=pqos_l3ca_get_mock)
l3ca = PqosCatL3()
with patch('pqos.l3ca.PqosCap') as PqosCapMock:
PqosCapMock.return_value.get_l3ca_cos_num.return_value = 2
coses = l3ca.get(1)
lib.pqos_l3ca_get.assert_called_once()
self.assertEqual(len(coses), 2)
self.assertEqual(coses[0].class_id, 0)
self.assertEqual(coses[0].mask, 0x01fe)
self.assertEqual(coses[1].class_id, 1)
self.assertEqual(coses[1].mask, 0x003f)
def init(self, iface, force_iface=False):
"""
Initializes libpqos
Returns:
0 on success
-1 otherwise
"""
if not force_iface and not iface in self.supported_iface():
log.error("RDT does not support '%s' interface!" % (iface))
return -1
# deinitialize lib first
if self.shared_dict['current_iface']:
self.fini()
# umount restcrl to improve caps detection
if platform.system() == 'FreeBSD':
result = os.system(
"/sbin/umount -a -t resctrl") # nosec - string literal
else:
result = os.system(
"/bin/umount -a -t resctrl") # nosec - string literal
if result:
log.error("Failed to umount resctrl fs! status code: %d"\
% (os.WEXITSTATUS(result)))
return -1
# attempt to initialize libpqos
try:
self.pqos.init(iface.upper())
self.cap = PqosCap()
self.l3ca = PqosCatL3()
self.mba = PqosMba()
self.alloc = PqosAlloc()
self.cpuinfo = PqosCpuInfo()
except Exception as ex:
log.error(str(ex))
return -1
# save current interface type in shared dict
self.shared_dict['current_iface'] = iface
# Reread MBA BW status from libpqos
self.refresh_mba_bw_status()
return 0
def test_get_min_cbm_bits(self, lib):
"Tests get_min_cbm_bits() method."
def pqos_l3ca_get_min_cbm_bits_mock(min_cbm_bits_ref):
"Mock pqos_l3ca_get_min_cbm_bits()."
ctypes_ref_set_int(min_cbm_bits_ref, 2)
return 0
func_mock = MagicMock(side_effect=pqos_l3ca_get_min_cbm_bits_mock)
lib.pqos_l3ca_get_min_cbm_bits = func_mock
l3ca = PqosCatL3()
min_bits = l3ca.get_min_cbm_bits()
self.assertEqual(min_bits, 2)
def set_allocation_class(sockets, class_id, mask):
"""
Sets up allocation classes of service on selected CPU sockets
Parameters:
sockets: a list of socket IDs
class_id: class of service ID
mask: COS bitmask
"""
l3ca = PqosCatL3()
cos = l3ca.COS(class_id, mask)
for socket in sockets:
try:
l3ca.set(socket, [cos])
except:
print("Setting up cache allocation class of service failed!")
def init(self):
"""
Initializes libpqos
Returns:
0 on success
-1 otherwise
"""
try:
self.pqos.init('MSR')
self.cap = PqosCap()
self.l3ca = PqosCatL3()
self.mba = PqosMba()
self.alloc = PqosAlloc()
self.cpuinfo = PqosCpuInfo()
except Exception as ex:
log.error(str(ex))
return -1
return 0
def print_allocation_config(sockets):
"""
Prints allocation configuration.
Parameters:
sockets: a list of socket IDs
"""
l3ca = PqosCatL3()
for socket in sockets:
try:
coses = l3ca.get(socket)
print("L3CA COS definitions for Socket %u:" % socket)
for cos in coses:
cos_params = (cos.class_id, cos.mask)
print(" L3CA COS%u => MASK 0x%x" % cos_params)
except:
print("Error")
raise
def print_allocation_config():
"""
Prints allocation configuration.
"""
l3ca = PqosCatL3()
alloc = PqosAlloc()
cpuinfo = PqosCpuInfo()
sockets = cpuinfo.get_sockets()
for socket in sockets:
try:
coses = l3ca.get(socket)
print("L3CA COS definitions for Socket %u:" % socket)
for cos in coses:
cos_params = (cos.class_id, cos.mask)
print(" L3CA COS%u => MASK 0x%x" % cos_params)
except:
print("Error")
raise
for socket in sockets:
try:
print("Core information for socket %u:" % socket)
cores = cpuinfo.get_cores(socket)
for core in cores:
class_id = alloc.assoc_get(core)
try:
print(" Core %u => COS%u" % (core, class_id))
except:
print(" Core %u => ERROR" % core)
except:
print("Error")
raise
def test_set(self, lib):
"Tests set() method."
def pqos_l3ca_set_mock(socket, num_ca, l3_ca_arr):
"Mock pqos_l3ca_set()."
self.assertEqual(socket, 0)
self.assertEqual(num_ca, 1)
cos = l3_ca_arr[0]
self.assertEqual(cos.class_id, 4)
self.assertEqual(cos.cdp, 1)
self.assertEqual(cos.u.s.data_mask, 0x0f)
self.assertEqual(cos.u.s.code_mask, 0x1f)
return 0
lib.pqos_l3ca_set = MagicMock(side_effect=pqos_l3ca_set_mock)
l3ca = PqosCatL3()
cos = l3ca.COS(4, data_mask=u'0x0f', code_mask=0x1f)
l3ca.set(0, [cos])
lib.pqos_l3ca_set.assert_called_once()
def test_cos_no_masks(self):
"Tests PqosCatL3.COS class construction when no masks are given."
with self.assertRaises(ValueError):
PqosCatL3.COS(1)
pqos = Pqos()
pqos.init('MSR')
# Check if L3 CAT is supported
cap = PqosCap()
l3ca_supported = False
try:
cap.get_type('l3ca')
l3ca_supported = True
except:
pass
print('Is L3 CAT supported? %s' % ('Yes' if l3ca_supported else 'No'))
if l3ca_supported:
l3ca = PqosCatL3()
# Read L3 CAT configuration for socket 0
coses = l3ca.get(0)
for cos in coses:
print(cos)
# Configure L3 CAT
# Build configuration for COS 0 and COS 1
cos1 = l3ca.COS(0, 0x0007)
cos2 = l3ca.COS(1, 0x00f8)
# Set L3 CAT configuration for socket 0
l3ca.set(0, [cos1, cos2])
# Finalize PQoS library