def _gen_numa_topology(cls, cpu_nodes, cpu_sockets, cpu_cores,
cpu_threads, kb_mem, numa_mempages_list=None):
topology = vconfig.LibvirtConfigCapsNUMATopology()
cpu_count = 0
for cell_count in range(cpu_nodes):
cell = vconfig.LibvirtConfigCapsNUMACell()
cell.id = cell_count
cell.memory = kb_mem // cpu_nodes
for socket_count in range(cpu_sockets):
for cpu_num in range(cpu_cores * cpu_threads):
cpu = vconfig.LibvirtConfigCapsNUMACPU()
cpu.id = cpu_count
cpu.socket_id = cell_count
cpu.core_id = cpu_num // cpu_threads
cpu.siblings = set([cpu_threads *
(cpu_count // cpu_threads) + thread
for thread in range(cpu_threads)])
cell.cpus.append(cpu)
cpu_count += 1
# Set mempages per numa cell. if numa_mempages_list is empty
# we will set only the default 4K pages.
if numa_mempages_list:
mempages = numa_mempages_list[cell_count]
else:
mempages = vconfig.LibvirtConfigCapsNUMAPages()
mempages.size = 4
mempages.total = cell.memory // mempages.size
mempages = [mempages]
cell.mempages = mempages
topology.cells.append(cell)
return topology
def create_mempages(mappings):
"""Generate a list of LibvirtConfigCapsNUMAPages objects.
:param mappings: (dict) A mapping of page size to quantity of
said pages.
:returns: [LibvirtConfigCapsNUMAPages, ...]
"""
mempages = []
for page_size, page_qty in mappings:
mempage = vconfig.LibvirtConfigCapsNUMAPages()
mempage.size = page_size
mempage.total = page_qty
mempages.append(mempage)
return mempages
