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This patch changes the way data to fill the nodeinfo structure are gathered. We've gathere the test data by iterating processors an sockets separately from nodes. The reported data was based solely on information about core id. Problems arise when eg cores in mulit-processor machines don't have same id's on both processors or maybe one physical processor contains more NUMA nodes. This patch changes the approach how we detect processors and nodes. Now we start at enumerating nodes and for each node processors, sockets and threads are enumerated separately. This approach provides acurate data that comply to docs about the nodeinfo structure. This also enables to get rid of hacks: see commits10d9038b74,ac9dd4a676. (Those changes in nodeinfo.c are efectively reverted by this patch). This patch also changes output of one of the tests, as the processor topology is now acquired more precisely.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>