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perf evlist: Fix parsing with no sample_id_all bit set
The perf_evlist__event2evsel() is changed to handle non-sample events (such as mmap events) that have no id sample appended i.e. when sample_id_all is not set. Note that such events have a fixed format, so that the selected event (evsel) they are associated with is immaterial. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: David Ahern <dsahern@gmail.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1378325897-3840-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -446,20 +446,25 @@ static int perf_evlist__event2id(struct perf_evlist *evlist,
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static struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
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union perf_event *event)
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{
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struct perf_evsel *first = perf_evlist__first(evlist);
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struct hlist_head *head;
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struct perf_sample_id *sid;
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int hash;
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u64 id;
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if (evlist->nr_entries == 1)
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return perf_evlist__first(evlist);
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return first;
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if (!first->attr.sample_id_all &&
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event->header.type != PERF_RECORD_SAMPLE)
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return first;
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if (perf_evlist__event2id(evlist, event, &id))
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return NULL;
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/* Synthesized events have an id of zero */
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if (!id)
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return perf_evlist__first(evlist);
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return first;
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hash = hash_64(id, PERF_EVLIST__HLIST_BITS);
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head = &evlist->heads[hash];
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