@@ -433,3 +433,43 @@ int bpf_event__add_sb_event(struct perf_evlist **evlist,
return perf_evlist__add_sb_event(evlist, &attr, bpf_event__sb_cb, env);
}
+
+void bpf_event__print_bpf_prog_info(struct bpf_prog_info *info,
+ struct perf_env *env,
+ FILE *fp)
+{
+ __u32 *prog_lens = (__u32 *)(uintptr_t)(info->jited_func_lens);
+ __u64 *prog_addrs = (__u64 *)(uintptr_t)(info->jited_ksyms);
+ char name[KSYM_NAME_LEN];
+ struct btf *btf = NULL;
+ u32 sub_prog_cnt, i;
+
+ sub_prog_cnt = info->nr_jited_ksyms;
+ if (sub_prog_cnt != info->nr_prog_tags ||
+ sub_prog_cnt != info->nr_jited_func_lens)
+ return;
+
+ if (info->btf_id) {
+ struct btf_node *node;
+
+ node = perf_env__find_btf(env, info->btf_id);
+ if (node)
+ btf = btf__new((__u8 *)(node->data),
+ node->data_size);
+ }
+
+ if (sub_prog_cnt == 1) {
+ synthesize_bpf_prog_name(name, KSYM_NAME_LEN, info, btf, 0);
+ fprintf(fp, "# bpf_prog_info %u: %s addr 0x%llx size %u\n",
+ info->id, name, prog_addrs[0], prog_lens[0]);
+ return;
+ }
+
+ fprintf(fp, "# bpf_prog_info %u:\n", info->id);
+ for (i = 0; i < sub_prog_cnt; i++) {
+ synthesize_bpf_prog_name(name, KSYM_NAME_LEN, info, btf, i);
+
+ fprintf(fp, "# \tsub_prog %u: %s addr 0x%llx size %u\n",
+ i, name, prog_addrs[i], prog_lens[i]);
+ }
+}
@@ -38,7 +38,9 @@ int perf_event__synthesize_bpf_events(struct perf_session *session,
struct record_opts *opts);
int bpf_event__add_sb_event(struct perf_evlist **evlist,
struct perf_env *env);
-
+void bpf_event__print_bpf_prog_info(struct bpf_prog_info *info,
+ struct perf_env *env,
+ FILE *fp);
#else
static inline int machine__process_bpf_event(struct machine *machine __maybe_unused,
union perf_event *event __maybe_unused,
@@ -61,5 +63,11 @@ static int bpf_event__add_sb_event(struct perf_evlist **evlist __maybe_unused,
return 0;
}
+void bpf_event__print_bpf_prog_info(struct bpf_prog_info *info,
+ struct perf_env *env,
+ FILE *fp)
+{
+
+}
#endif // HAVE_LIBBPF_SUPPORT
#endif
@@ -1434,8 +1434,9 @@ static void print_bpf_prog_info(struct feat_fd *ff, FILE *fp)
node = rb_entry(next, struct bpf_prog_info_node, rb_node);
next = rb_next(&node->rb_node);
- fprintf(fp, "# bpf_prog_info of id %u\n",
- node->info_linear->info.id);
+
+ bpf_event__print_bpf_prog_info(&node->info_linear->info,
+ env, fp);
}
up_read(&env->bpf_progs.lock);
This patch enables showing bpf program name, address, and size in the header. Before the patch: perf report --header-only ... # bpf_prog_info of id 9 # bpf_prog_info of id 10 # bpf_prog_info of id 13 After the patch: # bpf_prog_info 9: bpf_prog_7be49e3934a125ba addr 0xffffffffa0024947 size 229 # bpf_prog_info 10: bpf_prog_2a142ef67aaad174 addr 0xffffffffa007c94d size 229 # bpf_prog_info 13: bpf_prog_47368425825d7384_task__task_newt addr 0xffffffffa0251137 size 369 Signed-off-by: Song Liu <songliubraving@fb.com> --- tools/perf/util/bpf-event.c | 40 +++++++++++++++++++++++++++++++++++++ tools/perf/util/bpf-event.h | 10 +++++++++- tools/perf/util/header.c | 5 +++-- 3 files changed, 52 insertions(+), 3 deletions(-)