From: Grant Seltzer <grantseltzer@xxxxxxxxx>
This adds comments above five functions in btf.h which document
their uses. These comments are of a format that doxygen and sphinx
can pick up and render. These are rendered by libbpf.readthedocs.org
Signed-off-by: Grant Seltzer <grantseltzer@xxxxxxxxx>
---
tools/lib/bpf/btf.h | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h
index 4a711f990904..05e06f0136e3 100644
--- a/tools/lib/bpf/btf.h
+++ b/tools/lib/bpf/btf.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
/* Copyright (c) 2018 Facebook */
+/*! \file */
#ifndef __LIBBPF_BTF_H
#define __LIBBPF_BTF_H
@@ -30,11 +31,47 @@ enum btf_endianness {
BTF_BIG_ENDIAN = 1,
};
+/**
+ * @brief **btf__free()** frees all data of a BTF object.
+ * @param btf BTF object to free
+ * @return void
+ */
LIBBPF_API void btf__free(struct btf *btf);
+/**
+ * @brief **btf__new()** creates a new instance of a BTF object.
+ * from the raw bytes of an ELF's BTF section
+ * @param data raw bytes
+ * @param size length of raw bytes
+ * @return new instance of BTF object which has to be eventually freed
+ * with **btf__free()**
+ */
LIBBPF_API struct btf *btf__new(const void *data, __u32 size);
+
+/**
+ * @brief **btf__new_split()** create a new instance of a BTF object from
+ * the provided raw data bytes. It takes another BTF instance, **base_btf**,
+ * which serves as a base BTF, which is extended by types in a newly created
+ * BTF instance.
+ * @param data raw bytes
+ * @param size length of raw bytes
+ * @param base_btf the base btf object
+ * @return struct btf *
+ */
LIBBPF_API struct btf *btf__new_split(const void *data, __u32 size, struct btf *base_btf);
+
+/**
+ * @brief **btf__new_empty()** creates an unpopulated BTF object.
+ * @return struct btf *
+ */
LIBBPF_API struct btf *btf__new_empty(void);
+
+/**
+ * @brief **btf__new_empty_split()** creates an unpopulated
+ * BTF object from an ELF BTF section except with a base BTF
+ * on top of which split BTF should be based.
+ * @return struct btf *
+ */
LIBBPF_API struct btf *btf__new_empty_split(struct btf *base_btf);
LIBBPF_API struct btf *btf__parse(const char *path, struct btf_ext **btf_ext);
--
2.31.1
