Re: [PATCH V6 04/25] perf tools: Add support for AUX area recording

From: Jiri Olsa
Date: Tue Mar 24 2015 - 07:07:52 EST


On Mon, Mar 16, 2015 at 02:41:26PM +0200, Adrian Hunter wrote:

SNIP

> index 8acd0df..7553788 100644
> --- a/tools/perf/util/record.c
> +++ b/tools/perf/util/record.c
> @@ -119,7 +119,16 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
> evsel->attr.comm_exec = 1;
> }
>
> - if (evlist->nr_entries > 1) {
> + if (opts->full_auxtrace) {
> + /*
> + * Need to be able to synthesize and parse selected events with
> + * arbitrary sample types, which requires always being able to
> + * match the id.
> + */
> + use_sample_identifier = true;

no need to set use_sample_identifier, you can call
perf_evsel__set_sample_id with true


> + evlist__for_each(evlist, evsel)
> + perf_evsel__set_sample_id(evsel, use_sample_identifier);
> + } else if (evlist->nr_entries > 1) {

but shouldn't you first detect the perf_can_sample_identifier bool same
as the other leg does and use it accordingly? maybe smth like:


if (evlist->nr_entries > 1 || opts->full_auxtrace) {
...
}

if (opts->full_auxtrace && !use_sample_identifier)
err..


jirka
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