X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=lttng-utils.h;fp=lttng-utils.h;h=c669036b8bf7ce6f52abfdb95a9e5f2de2d041e5;hb=63629d862e5c6010d362dc30f2e8721221ef0dd5;hp=0000000000000000000000000000000000000000;hpb=721caea47b6506f7ad9086c3e9801dc9dfe06b6a;p=deliverable%2Flttng-modules.git

diff --git a/lttng-utils.h b/lttng-utils.h
new file mode 100644
index 00000000..c669036b
--- /dev/null
+++ b/lttng-utils.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) */
+#ifndef _LTTNG_UTILS_H
+#define _LTTNG_UTILS_H
+/*
+ * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
+ */
+
+#include <linux/jhash.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+static inline
+struct hlist_head *utils_borrow_hash_table_bucket(
+		struct hlist_head *hash_table,
+		unsigned int hash_table_size,
+		const char *event_name)
+{
+	size_t name_len;
+	uint32_t hash;
+
+	name_len = strlen(event_name);
+
+	hash = jhash(event_name, name_len, 0);
+	return &hash_table[hash & (hash_table_size - 1)];
+}
+#endif /* _LTTNG_UTILS_H */