Em Tue, Jul 07, 2020 at 02:14:49PM -0700, Ian Rogers escreveu:
> Setting the parse_events_error directly doesn't increment num_errors
> causing the error message not to be displayed. Use the
> parse_events__handle_error function that sets num_errors and handle
> multiple errors.
What was the command line you used to exercise the error and then the
fix?
- Arnaldo
> Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
> ---
> tools/perf/util/parse-events.c | 38 ++++++++++++++++++----------------
> 1 file changed, 20 insertions(+), 18 deletions(-)
>
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index c4906a6a9f1a..e88e4c7a2a9a 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -767,8 +767,8 @@ int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
>
> return 0;
> errout:
> - parse_state->error->help = strdup("(add -v to see detail)");
> - parse_state->error->str = strdup(errbuf);
> + parse_events__handle_error(parse_state->error, 0,
> + strdup(errbuf), strdup("(add -v to see detail)"));
> return err;
> }
>
> @@ -784,36 +784,38 @@ parse_events_config_bpf(struct parse_events_state *parse_state,
> return 0;
>
> list_for_each_entry(term, head_config, list) {
> - char errbuf[BUFSIZ];
> int err;
>
> if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
> - snprintf(errbuf, sizeof(errbuf),
> - "Invalid config term for BPF object");
> - errbuf[BUFSIZ - 1] = '\0';
> -
> - parse_state->error->idx = term->err_term;
> - parse_state->error->str = strdup(errbuf);
> + parse_events__handle_error(parse_state->error, term->err_term,
> + strdup("Invalid config term for BPF object"),
> + NULL);
> return -EINVAL;
> }
>
> err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
> if (err) {
> + char errbuf[BUFSIZ];
> + int idx;
> +
> bpf__strerror_config_obj(obj, term, parse_state->evlist,
> &error_pos, err, errbuf,
> sizeof(errbuf));
> - parse_state->error->help = strdup(
> +
> + if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
> + idx = term->err_val;
> + else
> + idx = term->err_term + error_pos;
> +
> + parse_events__handle_error(parse_state->error, idx,
> + strdup(errbuf),
> + strdup(
> "Hint:\tValid config terms:\n"
> " \tmap:[<arraymap>].value<indices>=[value]\n"
> " \tmap:[<eventmap>].event<indices>=[event]\n"
> "\n"
> " \twhere <indices> is something like [0,3...5] or [all]\n"
> -" \t(add -v to see detail)");
> - parse_state->error->str = strdup(errbuf);
> - if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
> - parse_state->error->idx = term->err_val;
> - else
> - parse_state->error->idx = term->err_term + error_pos;
> +" \t(add -v to see detail)"));
> return err;
> }
> }
> @@ -877,8 +879,8 @@ int parse_events_load_bpf(struct parse_events_state *parse_state,
> -err, errbuf,
> sizeof(errbuf));
>
> - parse_state->error->help = strdup("(add -v to see detail)");
> - parse_state->error->str = strdup(errbuf);
> + parse_events__handle_error(parse_state->error, 0,
> + strdup(errbuf), strdup("(add -v to see detail)"));
> return err;
> }
>
> --
> 2.27.0.383.g050319c2ae-goog
>
--
- Arnaldo
