| Date | Tue, 19 May 2015 12:12:30 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 34/40] perf report: Parallelize perf report using multi-thread |
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On Mon, May 18, 2015 at 09:30:49AM +0900, Namhyung Kim wrote:
SNIP
> + > +int perf_session__process_events_mt(struct perf_session *session, void *arg) > +{ > + struct perf_data_file *file = session->file; > + struct perf_evlist *evlist = session->evlist; > + struct perf_evsel *evsel; > + u64 nr_entries = 0; > + struct perf_tool *tool = session->tool; > + struct perf_session *mt_sessions = NULL; > + struct perf_tool_mt *mt_tools = NULL; > + struct perf_session *ms; > + struct perf_tool_mt *mt; > + pthread_t *th_id; > + int err, i, k; > + int nr_index = session->header.nr_index; > + u64 size = perf_data_file__size(file); > +
SNIP
> + > + for (i = 1; i < nr_index; i++) { > + mt = &mt_tools[i]; > + > + evlist__for_each(evlist, evsel) { > + struct hists *hists = evsel__hists(evsel); > + > + if (perf_evsel__is_dummy_tracking(evsel)) > + continue; > + > + hists__mt_resort(hists, &mt->hists[evsel->idx]); > + > + /* Non-group events are considered as leader */ > + if (symbol_conf.event_group && > + !perf_evsel__is_group_leader(evsel)) { > + struct hists *leader_hists; > + > + leader_hists = evsel__hists(evsel->leader); > + hists__match(leader_hists, hists); > + hists__link(leader_hists, hists);
hum, could you please describe/comment on why is this needed?
thanks, jirka
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