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62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
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/*
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* virnuma.c: helper APIs for managing numa
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*
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* Copyright (C) 2011-2013 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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#include <config.h>
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#include "virnuma.h"
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#include "vircommand.h"
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#include "virerror.h"
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#define VIR_FROM_THIS VIR_FROM_NONE
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#if HAVE_NUMAD
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char *
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virNumaGetAutoPlacementAdvice(unsigned short vcpus,
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unsigned long long balloon)
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{
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virCommandPtr cmd = NULL;
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char *output = NULL;
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cmd = virCommandNewArgList(NUMAD, "-w", NULL);
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virCommandAddArgFormat(cmd, "%d:%llu", vcpus,
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VIR_DIV_UP(balloon, 1024));
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virCommandSetOutputBuffer(cmd, &output);
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if (virCommandRun(cmd, NULL) < 0)
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("Failed to query numad for the "
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"advisory nodeset"));
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virCommandFree(cmd);
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return output;
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}
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#else
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char *
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virNumaGetAutoPlacementAdvice(unsigned short vcpus ATTRIBUTE_UNUSED,
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unsigned long long balloon ATTRIBUTE_UNUSED)
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{
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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_("numad is not available on this host"));
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return NULL;
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}
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#endif
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