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This patch resolves a situation where a core is defective and is not in the present mask during boot. Optionally a host can have empty sockets could be brought online if the socket is added. In this case the present mask contains the cpu's that are actually there in the sockets even though they might be offline for some reason. This patch excludes the cpu's that are offline because the socket is defective/empty by checking the present mask before reading the cpu directory. Otherwise, the nodeinfo on such hosts always displays wrong output which includes the defective/empty sockets as set of offline cpu's. Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
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>