diff options
| author | Hengqi Chen <hengqi.chen@gmail.com> | 2021-10-02 19:10:00 +0300 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2021-10-06 22:34:02 +0300 |
| commit | 4a404a7e8a3902fc560527241a611186605efb4e (patch) | |
| tree | 0a71a79daf3e7f73f274e34798e8b40e824c927f | |
| parent | 9330303446382a33aa62a8a88a7a48555f76df0b (diff) | |
| download | linux-4a404a7e8a3902fc560527241a611186605efb4e.tar.xz | |
libbpf: Deprecate bpf_object__unload() API since v0.6
BPF objects are not reloadable after unload. Users are expected to use
bpf_object__close() to unload and free up resources in one operation.
No need to expose bpf_object__unload() as a public API, deprecate it
([0]). Add bpf_object__unload() as an alias to internal
bpf_object_unload() and replace all bpf_object__unload() uses to avoid
compilation errors.
[0] Closes: https://github.com/libbpf/libbpf/issues/290
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211002161000.3854559-1-hengqi.chen@gmail.com
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 8 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 1 |
2 files changed, 6 insertions, 3 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index f32fa51b1e63..4b90878a315f 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -6672,7 +6672,7 @@ bpf_object__open_buffer(const void *obj_buf, size_t obj_buf_sz, return libbpf_ptr(__bpf_object__open(NULL, obj_buf, obj_buf_sz, &opts)); } -int bpf_object__unload(struct bpf_object *obj) +static int bpf_object_unload(struct bpf_object *obj) { size_t i; @@ -6691,6 +6691,8 @@ int bpf_object__unload(struct bpf_object *obj) return 0; } +int bpf_object__unload(struct bpf_object *obj) __attribute__((alias("bpf_object_unload"))); + static int bpf_object__sanitize_maps(struct bpf_object *obj) { struct bpf_map *m; @@ -7089,7 +7091,7 @@ out: if (obj->maps[i].pinned && !obj->maps[i].reused) bpf_map__unpin(&obj->maps[i], NULL); - bpf_object__unload(obj); + bpf_object_unload(obj); pr_warn("failed to load object '%s'\n", obj->path); return libbpf_err(err); } @@ -7698,7 +7700,7 @@ void bpf_object__close(struct bpf_object *obj) bpf_gen__free(obj->gen_loader); bpf_object__elf_finish(obj); - bpf_object__unload(obj); + bpf_object_unload(obj); btf__free(obj->btf); btf_ext__free(obj->btf_ext); diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index e35490c54eb3..df10d14dbbb8 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -150,6 +150,7 @@ struct bpf_object_load_attr { /* Load/unload object into/from kernel */ LIBBPF_API int bpf_object__load(struct bpf_object *obj); LIBBPF_API int bpf_object__load_xattr(struct bpf_object_load_attr *attr); +LIBBPF_DEPRECATED_SINCE(0, 6, "bpf_object__unload() is deprecated, use bpf_object__close() instead") LIBBPF_API int bpf_object__unload(struct bpf_object *obj); LIBBPF_API const char *bpf_object__name(const struct bpf_object *obj); |