示例#1
0
int
virNumaSetupMemoryPolicy(virDomainNumatuneMemMode mode ATTRIBUTE_UNUSED,
                         virBitmapPtr nodeset)
{
    if (!virNumaNodesetIsAvailable(nodeset))
        return -1;

    return 0;
}
示例#2
0
bool
virDomainNumatuneNodesetIsAvailable(virDomainNumaPtr numatune,
                                    virBitmapPtr auto_nodeset)
{
    size_t i = 0;
    virBitmapPtr b = NULL;

    if (!numatune)
        return true;

    b = virDomainNumatuneGetNodeset(numatune, auto_nodeset, -1);
    if (!virNumaNodesetIsAvailable(b))
        return false;

    for (i = 0; i < numatune->nmem_nodes; i++) {
        b = virDomainNumatuneGetNodeset(numatune, auto_nodeset, i);
        if (!virNumaNodesetIsAvailable(b))
            return false;
    }

    return true;
}
示例#3
0
int
virNumaSetupMemoryPolicy(virDomainNumatuneMemMode mode,
                         virBitmapPtr nodeset)
{
    nodemask_t mask;
    int node = -1;
    int ret = -1;
    int bit = 0;
    size_t i;
    int maxnode = 0;

    if (!nodeset)
        return 0;

    if (!virNumaNodesetIsAvailable(nodeset))
        return -1;

    maxnode = numa_max_node();
    maxnode = maxnode < NUMA_NUM_NODES ? maxnode : NUMA_NUM_NODES;

    /* Convert nodemask to NUMA bitmask. */
    nodemask_zero(&mask);
    bit = -1;
    while ((bit = virBitmapNextSetBit(nodeset, bit)) >= 0) {
        if (bit > maxnode) {
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           _("NUMA node %d is out of range"), bit);
            return -1;
        }
        nodemask_set(&mask, bit);
    }

    switch (mode) {
    case VIR_DOMAIN_NUMATUNE_MEM_STRICT:
        numa_set_bind_policy(1);
        numa_set_membind(&mask);
        numa_set_bind_policy(0);
        break;

    case VIR_DOMAIN_NUMATUNE_MEM_PREFERRED:
    {
        int nnodes = 0;
        for (i = 0; i < NUMA_NUM_NODES; i++) {
            if (nodemask_isset(&mask, i)) {
                node = i;
                nnodes++;
            }
        }

        if (nnodes != 1) {
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           "%s", _("NUMA memory tuning in 'preferred' mode "
                                   "only supports single node"));
            goto cleanup;
        }

        numa_set_bind_policy(0);
        numa_set_preferred(node);
    }
    break;

    case VIR_DOMAIN_NUMATUNE_MEM_INTERLEAVE:
        numa_set_interleave_mask(&mask);
        break;

    case VIR_DOMAIN_NUMATUNE_MEM_LAST:
        break;
    }
    ret = 0;

cleanup:
    return ret;
}