[PATCH bpf-next 4/6] bpf: Move the declaration of __bpf_obj_drop_impl() to internal.h

[Hou Tao <houtao@huaweicloud.com>]

From: Hou Tao <houtao1@huawei.com>

both syscall.c and helpers.c have the declaration of
__bpf_obj_drop_impl(), so just move it to a common header file.

Signed-off-by: Hou Tao <houtao1@huawei.com>
---
 kernel/bpf/helpers.c  |  3 +--
 kernel/bpf/internal.h | 11 +++++++++++
 kernel/bpf/syscall.c  |  4 ++--
 3 files changed, 14 insertions(+), 4 deletions(-)
 create mode 100644 kernel/bpf/internal.h

diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index dd1c69ee3375..07f49f8831c0 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -24,6 +24,7 @@
 #include <linux/bpf_mem_alloc.h>
 #include <linux/kasan.h>
 
+#include "internal.h"
 #include "../../lib/kstrtox.h"
 
 /* If kernel subsystem is allowing eBPF programs to call this function,
@@ -1808,8 +1809,6 @@ bpf_base_func_proto(enum bpf_func_id func_id)
 	}
 }
 
-void __bpf_obj_drop_impl(void *p, const struct btf_record *rec);
-
 void bpf_list_head_free(const struct btf_field *field, void *list_head,
 			struct bpf_spin_lock *spin_lock)
 {
diff --git a/kernel/bpf/internal.h b/kernel/bpf/internal.h
new file mode 100644
index 000000000000..e233ea83eb0a
--- /dev/null
+++ b/kernel/bpf/internal.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2023. Huawei Technologies Co., Ltd
+ */
+#ifndef __BPF_INTERNAL_H_
+#define __BPF_INTERNAL_H_
+
+struct btf_record;
+
+void __bpf_obj_drop_impl(void *p, const struct btf_record *rec);
+
+#endif /* __BPF_INTERNAL_H_ */
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 6b5280f14a53..7de4b9f97c8f 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -39,6 +39,8 @@
 
 #include <net/tcx.h>
 
+#include "internal.h"
+
 #define IS_FD_ARRAY(map) ((map)->map_type == BPF_MAP_TYPE_PERF_EVENT_ARRAY || \
 			  (map)->map_type == BPF_MAP_TYPE_CGROUP_ARRAY || \
 			  (map)->map_type == BPF_MAP_TYPE_ARRAY_OF_MAPS)
@@ -626,8 +628,6 @@ void bpf_obj_free_timer(const struct btf_record *rec, void *obj)
 	bpf_timer_cancel_and_free(obj + rec->timer_off);
 }
 
-extern void __bpf_obj_drop_impl(void *p, const struct btf_record *rec);
-
 void bpf_obj_free_fields(const struct btf_record *rec, void *obj)
 {
 	const struct btf_field *fields;
-- 
2.29.2