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Code Issues Releases Wiki Activity

perf bpf: Stop using deprecated bpf_load_program() API

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bpf_load_program() API is deprecated, remove perf's usage of the
deprecated function. Add a __weak function declaration for libbpf
version compatibility.

Signed-off-by: Christy Lee <christylee@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: bpf@vger.kernel.org
Cc: kernel-team@fb.com
Link: https://lore.kernel.org/bpf/20220212073054.1052880-2-andrii@kernel.org
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Christy Lee 2022-02-11 23:30:53 -08:00 committed by Arnaldo Carvalho de Melo
parent bcaf0a9785
commit 710f6c38bc
2 changed files with 17 additions and 10 deletions
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14
tools/perf/tests/bpf.c
View file

@ -281,8 +281,8 @@ static int __test__bpf(int idx)
static int check_env(void)
{
LIBBPF_OPTS(bpf_prog_load_opts, opts);
int err;
unsigned int kver_int;
char license[] = "GPL";
struct bpf_insn insns[] = {
@ -290,19 +290,13 @@ static int check_env(void)
BPF_EXIT_INSN(),
};
err = fetch_kernel_version(&kver_int, NULL, 0);
err = fetch_kernel_version(&opts.kern_version, NULL, 0);
if (err) {
pr_debug("Unable to get kernel version\n");
return err;
}
/* temporarily disable libbpf deprecation warnings */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
err = bpf_load_program(BPF_PROG_TYPE_KPROBE, insns,
ARRAY_SIZE(insns),
license, kver_int, NULL, 0);
#pragma GCC diagnostic pop
err = bpf_prog_load(BPF_PROG_TYPE_KPROBE, NULL, license, insns,
ARRAY_SIZE(insns), &opts);
if (err < 0) {
pr_err("Missing basic BPF support, skip this test: %s\n",
strerror(errno));

13
tools/perf/util/bpf-event.c
View file

@ -33,6 +33,19 @@ struct btf * __weak btf__load_from_kernel_by_id(__u32 id)
return err ? ERR_PTR(err) : btf;
}
int __weak bpf_prog_load(enum bpf_prog_type prog_type,
const char *prog_name __maybe_unused,
const char *license,
const struct bpf_insn *insns, size_t insn_cnt,
const struct bpf_prog_load_opts *opts)
{
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
return bpf_load_program(prog_type, insns, insn_cnt, license,
opts->kern_version, opts->log_buf, opts->log_size);
#pragma GCC diagnostic pop
}
struct bpf_program * __weak
bpf_object__next_program(const struct bpf_object *obj, struct bpf_program *prev)
{