perf session: Don't count per evsel events

PERF_RECORD_SAMPLE was not being counted here and is the only per-evsel
thing anyway, the other events were not mapping to a evsel.

With this we don't require that evsels used with a perf_session need to
have space for hists, like the ones in annotate, report, top.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-kzchpz0l1mhrsfpkirz086m2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/session.c

@@ -813,22 +813,6 @@ int perf_session__deliver_event(struct perf_session *session,
 	dump_event(session, event, file_offset, sample);
 
 	evsel = perf_evlist__id2evsel(session->evlist, sample->id);
-	if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) {
-		/*
-		 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here
-		 * because the tools right now may apply filters, discarding
-		 * some of the samples. For consistency, in the future we
-		 * should have something like nr_filtered_samples and remove
-		 * the sample->period from total_sample_period, etc, KISS for
-		 * now tho.
-		 *
-		 * Also testing against NULL allows us to handle files without
-		 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the
-		 * future probably it'll be a good idea to restrict event
-		 * processing via perf_session to files with both set.
-		 */
-		hists__inc_nr_events(evsel__hists(evsel), event->header.type);
-	}
 
 	machine = perf_session__find_machine_for_cpumode(session, event,
 							 sample);