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nodeinfo: Don't fail on non-contiguous NUMA topologies

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nodeGetFreeMemory and nodeGetCellsFreeMemory assumed that the NUMA nodes
are contiguous and starting from 0. Unfortunately there are machines
that don't match this assumption:

available: 1 nodes (1)
node 1 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
node 1 size: 16340 MB
node 1 free: 11065 MB

Before this patch:
error: internal error Failed to query NUMA free memory
error: internal error Failed to query NUMA free memory for node: 0

After this patch:
Total: 15772580 KiB
0: 0 KiB

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
hejia hejia 2013-07-08 22:03:05 +08:00 committed by Peter Krempa
parent ee777e9949
commit 6d986d9918
1 changed files with 6 additions and 12 deletions
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18
src/nodeinfo.c
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@ -1686,12 +1686,9 @@ nodeGetCellsFreeMemory(unsigned long long *freeMems,
for (numCells = 0, n = startCell; n <= lastCell; n++) {
long long mem;
if (numa_node_size64(n, &mem) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to query NUMA free memory for node: %d"),
n);
goto cleanup;
}
if (numa_node_size64(n, &mem) < 0)
mem = 0;
freeMems[numCells++] = mem;
}
ret = numCells;
@ -1712,15 +1709,12 @@ nodeGetFreeMemory(void)
for (n = 0; n <= numa_max_node(); n++) {
long long mem;
if (numa_node_size64(n, &mem) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Failed to query NUMA free memory"));
goto cleanup;
}
if (numa_node_size64(n, &mem) < 0)
continue;
freeMem += mem;
}
cleanup:
return freeMem;
}