diff options
Diffstat (limited to 'resources/libraries/python/QemuUtils.py')
| -rw-r--r-- | resources/libraries/python/QemuUtils.py | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/resources/libraries/python/QemuUtils.py b/resources/libraries/python/QemuUtils.py index 3751cd6da9..16ade29167 100644 --- a/resources/libraries/python/QemuUtils.py +++ b/resources/libraries/python/QemuUtils.py @@ -53,8 +53,6 @@ class QemuUtils(object): self._qemu_opt['huge_allocate'] = False # Default image for CSIT virl setup self._qemu_opt['disk_image'] = '/var/lib/vm/vhost-nested.img' - # Affinity of qemu processes - self._qemu_opt['affinity'] = False # VM node info dict self._vm_info = { 'type': NodeType.VM, @@ -128,13 +126,28 @@ class QemuUtils(object): """ self._qemu_opt['disk_image'] = disk_image - def qemu_set_affinity(self, mask): - """Set qemu affinity by taskset with cpu mask. + def qemu_set_affinity(self, *host_cpus): + """Set qemu affinity by getting thread PIDs via QMP and taskset to list + of CPU cores. - :param mask: Hex CPU mask. - :type mask: str + :param host_cpus: List of CPU cores. + :type host_cpus: list """ - self._qemu_opt['affinity'] = mask + qemu_cpus = self._qemu_qmp_exec('query-cpus')['return'] + + if len(qemu_cpus) != len(host_cpus): + logger.debug('Host CPU count {0}, Qemu Thread count {1}'.format( + len(host_cpus), len(qemu_cpus))) + raise ValueError('Host CPU count must match Qemu Thread count') + + for qemu_cpu, host_cpu in zip(qemu_cpus, host_cpus): + cmd = 'taskset -p {0} {1}'.format(hex(1 << int(host_cpu)), + qemu_cpu['thread_id']) + (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd) + if int(ret_code) != 0: + logger.debug('Set affinity failed {0}'.format(stderr)) + raise RuntimeError('Set affinity failed on {0}'.format( + self._node['host'])) def qemu_set_node(self, node): """Set node to run QEMU on. @@ -409,12 +422,9 @@ class QemuUtils(object): '-device isa-serial,chardev=qga0' # Graphic setup graphic = '-monitor none -display none -vga none' - qbin = 'taskset {0} {1}'.format(self._qemu_opt.get('affinity'), - self.__QEMU_BIN) if self._qemu_opt.get( - 'affinity') else self.__QEMU_BIN # Run QEMU cmd = '{0} {1} {2} {3} {4} -hda {5} {6} {7} {8} {9}'.format( - qbin, self._qemu_opt.get('smp'), mem, ssh_fwd, + self.__QEMU_BIN, self._qemu_opt.get('smp'), mem, ssh_fwd, self._qemu_opt.get('options'), self._qemu_opt.get('disk_image'), qmp, serial, qga, graphic) (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd, timeout=300) |