Re: [PATCH v5] perf tools: add support for libpfm4

[Jiri Olsa]

On Mon, Mar 23, 2020 at 04:58:46PM -0700, Ian Rogers wrote:

SNIP

> +		/* no event */
> +		if (*q == '\0')
> +			continue;
> +
> +		memset(&attr, 0, sizeof(attr));
> +		event_attr_init(&attr);
> +
> +		ret = parse_libpfm_event(q, &attr);
> +		if (ret != PFM_SUCCESS) {
> +			fprintf(stderr, "failed to parse event %s : %s\n", str, pfm_strerror(ret));
> +			goto error;
> +		}
> +
> +		evsel = perf_evsel__new_idx(&attr, evlist->core.nr_entries);
> +		if (evsel == NULL)
> +			goto error;
> +
> +		evsel->name = strdup(q);
> +		if (!evsel->name) {
> +			evsel__delete(evsel);
> +			goto error;
> +		}
> +		evsel->is_libpfm_event = true;
> +
> +		pmu = perf_pmu__find_by_type((unsigned)attr.type);
> +		if (pmu)
> +			evsel->core.own_cpus = perf_cpu_map__get(pmu->cpus);

I think you need to do more setup in here, like in __add_event function
would be great to factor those bits from __add_event function and call
it from here, so it's all in one place

jirka