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Name it virNumaGetHostMemoryNodeset and return only NUMA nodes which have memory installed. This is necessary as the kernel is not very happy to set the memory cgroup setting for nodes which do not have any memory. This would break vcpu hotplug with following message on such configruation: Invalid value '0,8' for 'cpuset.mems': Invalid argument Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1375268
68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/*
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* virnuma.h: helper APIs for managing numa
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*
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* Copyright (C) 2011-2014 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef __VIR_NUMA_H__
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# define __VIR_NUMA_H__
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# include "internal.h"
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# include "virbitmap.h"
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# include "virutil.h"
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char *virNumaGetAutoPlacementAdvice(unsigned short vcups,
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unsigned long long balloon);
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int virNumaSetupMemoryPolicy(virDomainNumatuneMemMode mode,
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virBitmapPtr nodeset);
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virBitmapPtr virNumaGetHostMemoryNodeset(void);
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bool virNumaNodesetIsAvailable(virBitmapPtr nodeset);
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bool virNumaIsAvailable(void);
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int virNumaGetMaxNode(void);
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bool virNumaNodeIsAvailable(int node);
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int virNumaGetDistances(int node,
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int **distances,
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int *ndistances);
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int virNumaGetNodeMemory(int node,
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unsigned long long *memsize,
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unsigned long long *memfree);
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unsigned int virNumaGetMaxCPUs(void);
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int virNumaGetNodeCPUs(int node, virBitmapPtr *cpus);
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int virNumaGetPageInfo(int node,
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unsigned int page_size,
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unsigned long long huge_page_sum,
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unsigned int *page_avail,
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unsigned int *page_free);
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int virNumaGetPages(int node,
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unsigned int **pages_size,
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unsigned int **pages_avail,
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unsigned int **pages_free,
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size_t *npages)
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ATTRIBUTE_NONNULL(5);
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int virNumaSetPagePoolSize(int node,
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unsigned int page_size,
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unsigned long long page_count,
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bool add);
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#endif /* __VIR_NUMA_H__ */
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