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