Adding upstream version 1:7.0.3.upstream/1%7.0.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/src/util-hugepages.h b/src/util-hugepages.h
new file mode 100644
index 0000000..8946eae
--- /dev/null
+++ b/src/util-hugepages.h
@@ -0,0 +1,53 @@
+/* Copyright (C) 2023 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Lukas Sismis <lsismis@oisf.net>
+ */
+
+#ifndef UTIL_HUGEPAGES_H
+#define UTIL_HUGEPAGES_H
+
+typedef struct {
+    uint32_t size_kb;
+    uint16_t allocated;
+    uint16_t free;
+} HugepageInfo;
+
+// Structure to hold information about individual NUMA nodes in the system and
+// and their respective allocated hugepages
+// So for e.g. NUMA node 0 there can be 2 hugepage_size - 2 MB and 1 GB
+// Each hugepage size will then have a record of number of allocated/free hpages
+typedef struct {
+    uint16_t num_hugepage_sizes;
+    HugepageInfo *hugepages;
+} NodeInfo;
+
+// Structure to hold information about all hugepage sizes residing on all NUMA
+// nodes in the system
+typedef struct {
+    uint16_t num_nodes;
+    NodeInfo *nodes;
+} SystemHugepageSnapshot;
+
+SystemHugepageSnapshot *SystemHugepageSnapshotCreate(void);
+void SystemHugepageSnapshotDestroy(SystemHugepageSnapshot *s);
+void SystemHugepageEvaluateHugepages(SystemHugepageSnapshot *pre_s, SystemHugepageSnapshot *post_s);
+
+#endif /* UTIL_HUGEPAGES_H */