perf evsel: Rename __perf_evsel__sample_size() to __evsel__sample_size()

As it is a 'struct evsel' related method, not part of tools/lib/perf/,
aka libperf, to whom the perf_ prefix belongs.

Cc: Adrian Hunter <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/tests/sample-parsing.c

···
 		goto out_free;
 	}
 
-	evsel.sample_size = __perf_evsel__sample_size(sample_type);
+	evsel.sample_size = __evsel__sample_size(sample_type);
 
 	err = perf_evsel__parse_sample(&evsel, event, &sample_out);
 	if (err) {

tools/perf/util/evsel.c

···
 
 #define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y))
 
-int __perf_evsel__sample_size(u64 sample_type)
+int __evsel__sample_size(u64 sample_type)
 {
 	u64 mask = sample_type & PERF_SAMPLE_MASK;
 	int size = 0;
···
 	evsel->bpf_fd	   = -1;
 	INIT_LIST_HEAD(&evsel->config_terms);
 	perf_evsel__object.init(evsel);
-	evsel->sample_size = __perf_evsel__sample_size(attr->sample_type);
+	evsel->sample_size = __evsel__sample_size(attr->sample_type);
 	evsel__calc_id_pos(evsel);
 	evsel->cmdline_group_boundary = false;
 	evsel->metric_expr   = NULL;

tools/perf/util/evsel.h

···
 void evsel__config_callchain(struct evsel *evsel, struct record_opts *opts,
 			     struct callchain_param *callchain);
 
-int __perf_evsel__sample_size(u64 sample_type);
+int __evsel__sample_size(u64 sample_type);
 void evsel__calc_id_pos(struct evsel *evsel);
 
 bool perf_evsel__is_cache_op_valid(u8 type, u8 op);

tools/perf/util/intel-bts.c

···
 		bts->branches_id = id;
 		/*
 		 * We only use sample types from PERF_SAMPLE_MASK so we can use
-		 * __perf_evsel__sample_size() here.
+		 * __evsel__sample_size() here.
 		 */
 		bts->branches_event_size = sizeof(struct perf_record_sample) +
-				__perf_evsel__sample_size(attr.sample_type);
+					   __evsel__sample_size(attr.sample_type);
 	}
 
 	return 0;