perf intel-pt: Tidy Intel PT evsel lookup into separate function

Tidy the lookup of the Intel PT selected event (perf_evsel) into a separate
function.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-30-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 15 insertions, 10 deletions

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index b670502b0264..a9486b57584f 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1922,24 +1922,29 @@ static int intel_pt_synth_event(struct perf_session *session,
                                            &id, intel_pt_event_synth);
 }
 
+static struct perf_evsel *intel_pt_evsel(struct intel_pt *pt,
+                                         struct perf_evlist *evlist)
+{
+        struct perf_evsel *evsel;
+
+        evlist__for_each_entry(evlist, evsel) {
+                if (evsel->attr.type == pt->pmu_type && evsel->ids)
+                        return evsel;
+        }
+
+        return NULL;
+}
+
 static int intel_pt_synth_events(struct intel_pt *pt,
                                  struct perf_session *session)
 {
         struct perf_evlist *evlist = session->evlist;
-        struct perf_evsel *evsel;
+        struct perf_evsel *evsel = intel_pt_evsel(pt, evlist);
         struct perf_event_attr attr;
-        bool found = false;
         u64 id;
         int err;
 
-        evlist__for_each_entry(evlist, evsel) {
-                if (evsel->attr.type == pt->pmu_type && evsel->ids) {
-                        found = true;
-                        break;
-                }
-        }
-
-        if (!found) {
+        if (!evsel) {
                 pr_debug("There are no selected events with Intel Processor Trace data\n");
                 return 0;
         }