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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>
This commit is contained in:
Adrian Hunter 2017-05-26 11:17:30 +03:00 committed by Arnaldo Carvalho de Melo
parent 406a180501
commit 85a564d26d
1 changed files with 15 additions and 10 deletions
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25
tools/perf/util/intel-pt.c
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@ -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;
}