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54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Copyright (C) 2023 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Lukas Sismis <lsismis@oisf.net>
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*/
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#ifndef UTIL_HUGEPAGES_H
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#define UTIL_HUGEPAGES_H
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typedef struct {
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uint32_t size_kb;
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uint16_t allocated;
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uint16_t free;
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} HugepageInfo;
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// Structure to hold information about individual NUMA nodes in the system and
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// and their respective allocated hugepages
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// So for e.g. NUMA node 0 there can be 2 hugepage_size - 2 MB and 1 GB
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// Each hugepage size will then have a record of number of allocated/free hpages
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typedef struct {
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uint16_t num_hugepage_sizes;
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HugepageInfo *hugepages;
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} NodeInfo;
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// Structure to hold information about all hugepage sizes residing on all NUMA
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// nodes in the system
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typedef struct {
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uint16_t num_nodes;
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NodeInfo *nodes;
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} SystemHugepageSnapshot;
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SystemHugepageSnapshot *SystemHugepageSnapshotCreate(void);
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void SystemHugepageSnapshotDestroy(SystemHugepageSnapshot *s);
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void SystemHugepageEvaluateHugepages(SystemHugepageSnapshot *pre_s, SystemHugepageSnapshot *post_s);
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#endif /* UTIL_HUGEPAGES_H */
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