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https://gitlab.com/libvirt/libvirt-python.git
synced 2024-10-26 07:55:06 +03:00
Support virDomainPinIOThread
Support the libvirt_virDomainSetIOThreads method using code that mimics the existing libvirt_virDomainPinVcpuFlags method The following is a sample session assuming guest 'iothr-gst' has IOThreads configured (it's currently running, too) >>> import libvirt >>> con=libvirt.open("qemu:///system") >>> dom=con.lookupByName('iothr-gst') >>> dom.ioThreadsInfo() [(1, [False, False, True, False]), (2, [False, False, False, True]), (3, [True, True, True, True])] >>> cpumap=(True,True,True,False) >>> dom.pinIOThread(3,cpumap) 0 >>> print dom.ioThreadsInfo() [(1, [False, False, True, False]), (2, [False, False, False, True]), (3, [True, True, True, False])] >>> merge
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@ -436,6 +436,7 @@ skip_impl = (
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'virDomainGetEmulatorPinInfo',
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'virDomainPinEmulator',
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'virDomainGetIOThreadsInfo',
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'virDomainPinIOThread',
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'virSecretGetValue',
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'virSecretSetValue',
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'virSecretGetUUID',
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@ -284,6 +284,14 @@
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<arg name='flags' type='int' info='an OR'ed set of virDomainModificationImpact'/>
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<return type='char *' info="list of IOThreads information including the iothread_id, the cpumap, and the cpumap length for each iothread_id."/>
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</function>
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<function name='virDomainPinIOThread' file='python'>
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<info>Dynamically change the real CPUs which can be allocated to an IOThread. This function requires privileged access to the hypervisor.</info>
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<return type='int' info='0 in case of success, -1 in case of failure.'/>
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<arg name='domain' type='virDomainPtr' info='pointer to domain object'/>
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<arg name='iothread_val' type='unsigned int' info='iothread_id number'/>
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<arg name='cpumap' type='unsigned char *' info='pointer to a bit map of real CPUs (in 8-bit bytes) (IN) Each bit set to 1 means that corresponding CPU is usable. Bytes are stored in little-endian order: CPU0-7, 8-15... In each byte, lowest CPU number is least significant bit.'/>
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<arg name='flags' type='int' info='an OR'ed set of virDomainModificationImpact'/>
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</function>
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<function name='virDomainSetSchedulerParameters' file='python'>
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<info>Change the scheduler parameters</info>
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<return type='int' info='-1 in case of error, 0 in case of success.'/>
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@ -2081,6 +2081,70 @@ cleanup:
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return py_retval;
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}
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static PyObject *
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libvirt_virDomainPinIOThread(PyObject *self ATTRIBUTE_UNUSED,
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PyObject *args)
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{
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virDomainPtr domain;
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PyObject *pyobj_domain, *pycpumap;
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PyObject *ret = NULL;
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unsigned char *cpumap;
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int cpumaplen, iothread_val, tuple_size, cpunum;
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size_t i;
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unsigned int flags;
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int i_retval;
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if (!PyArg_ParseTuple(args, (char *)"OiOI:virDomainPinIOThread",
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&pyobj_domain, &iothread_val, &pycpumap, &flags))
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return NULL;
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domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
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if ((cpunum = getPyNodeCPUCount(virDomainGetConnect(domain))) < 0)
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return VIR_PY_INT_FAIL;
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if (PyTuple_Check(pycpumap)) {
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if ((tuple_size = PyTuple_Size(pycpumap)) == -1)
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return ret;
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} else {
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PyErr_SetString(PyExc_TypeError, "Unexpected type, tuple is required");
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return ret;
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}
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cpumaplen = VIR_CPU_MAPLEN(cpunum);
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if (VIR_ALLOC_N(cpumap, cpumaplen) < 0)
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return PyErr_NoMemory();
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for (i = 0; i < tuple_size; i++) {
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PyObject *flag = PyTuple_GetItem(pycpumap, i);
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bool b;
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if (!flag || libvirt_boolUnwrap(flag, &b) < 0)
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goto cleanup;
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if (b)
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VIR_USE_CPU(cpumap, i);
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else
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VIR_UNUSE_CPU(cpumap, i);
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}
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for (; i < cpunum; i++)
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VIR_UNUSE_CPU(cpumap, i);
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LIBVIRT_BEGIN_ALLOW_THREADS;
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i_retval = virDomainPinIOThread(domain, iothread_val,
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cpumap, cpumaplen, flags);
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LIBVIRT_END_ALLOW_THREADS;
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if (i_retval < 0) {
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ret = VIR_PY_INT_FAIL;
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goto cleanup;
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}
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ret = VIR_PY_INT_SUCCESS;
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cleanup:
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VIR_FREE(cpumap);
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return ret;
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}
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#endif /* LIBVIR_CHECK_VERSION(1, 2, 14) */
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/************************************************************************
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@ -8577,6 +8641,7 @@ static PyMethodDef libvirtMethods[] = {
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#endif /* LIBVIR_CHECK_VERSION(0, 10, 0) */
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#if LIBVIR_CHECK_VERSION(1, 2, 14)
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{(char *) "virDomainGetIOThreadsInfo", libvirt_virDomainGetIOThreadsInfo, METH_VARARGS, NULL},
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{(char *) "virDomainPinIOThread", libvirt_virDomainPinIOThread, METH_VARARGS, NULL},
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#endif /* LIBVIR_CHECK_VERSION(1, 2, 14) */
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{(char *) "virConnectListStoragePools", libvirt_virConnectListStoragePools, METH_VARARGS, NULL},
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{(char *) "virConnectListDefinedStoragePools", libvirt_virConnectListDefinedStoragePools, METH_VARARGS, NULL},
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