From: Andrii Nakryiko andrii@kernel.org
mainline inclusion from mainline-5.16-rc1 commit c4813e969ac471af730902377a2656b6b1b92c4d category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5EUVD CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The name of the API doesn't convey clearly that this size is in number of bytes (there needed to be a separate comment to make this clear in libbpf.h). Further, measuring the size of BPF program in bytes is not exactly the best fit, because BPF programs always consist of 8-byte instructions. As such, bpf_program__insn_cnt() is a better alternative in pretty much any imaginable case.
So schedule bpf_program__size() deprecation starting from v0.7 and it will be removed in libbpf 1.0.
Signed-off-by: Andrii Nakryiko andrii@kernel.org Signed-off-by: Alexei Starovoitov ast@kernel.org Link: https://lore.kernel.org/bpf/20211025224531.1088894-5-andrii@kernel.org (cherry picked from commit c4813e969ac471af730902377a2656b6b1b92c4d) Signed-off-by: Wang Yufen wangyufen@huawei.com --- tools/lib/bpf/libbpf.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 02b25a85f3e8..74ea79a75364 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -224,6 +224,7 @@ LIBBPF_API bool bpf_program__autoload(const struct bpf_program *prog); LIBBPF_API int bpf_program__set_autoload(struct bpf_program *prog, bool autoload);
/* returns program size in bytes */ +LIBBPF_DEPRECATED_SINCE(0, 7, "use bpf_program__insn_cnt() instead") LIBBPF_API size_t bpf_program__size(const struct bpf_program *prog);
struct bpf_insn;