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-rw-r--r--tools/perf/util/evlist.c38
1 files changed, 33 insertions, 5 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 3c9e77d6b4c2..cfbe2b99b9aa 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -413,7 +413,7 @@ int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
int nfds = 0;
struct perf_evsel *evsel;
- list_for_each_entry(evsel, &evlist->entries, node) {
+ evlist__for_each(evlist, evsel) {
if (evsel->system_wide)
nfds += nr_cpus;
else
@@ -527,6 +527,22 @@ static int perf_evlist__id_add_fd(struct perf_evlist *evlist,
return 0;
}
+static void perf_evlist__set_sid_idx(struct perf_evlist *evlist,
+ struct perf_evsel *evsel, int idx, int cpu,
+ int thread)
+{
+ struct perf_sample_id *sid = SID(evsel, cpu, thread);
+ sid->idx = idx;
+ if (evlist->cpus && cpu >= 0)
+ sid->cpu = evlist->cpus->map[cpu];
+ else
+ sid->cpu = -1;
+ if (!evsel->system_wide && evlist->threads && thread >= 0)
+ sid->tid = evlist->threads->map[thread];
+ else
+ sid->tid = -1;
+}
+
struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id)
{
struct hlist_head *head;
@@ -800,14 +816,26 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx,
perf_evlist__mmap_get(evlist, idx);
}
- if (__perf_evlist__add_pollfd(evlist, fd, idx) < 0) {
+ /*
+ * The system_wide flag causes a selected event to be opened
+ * always without a pid. Consequently it will never get a
+ * POLLHUP, but it is used for tracking in combination with
+ * other events, so it should not need to be polled anyway.
+ * Therefore don't add it for polling.
+ */
+ if (!evsel->system_wide &&
+ __perf_evlist__add_pollfd(evlist, fd, idx) < 0) {
perf_evlist__mmap_put(evlist, idx);
return -1;
}
- if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
- perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0)
- return -1;
+ if (evsel->attr.read_format & PERF_FORMAT_ID) {
+ if (perf_evlist__id_add_fd(evlist, evsel, cpu, thread,
+ fd) < 0)
+ return -1;
+ perf_evlist__set_sid_idx(evlist, evsel, idx, cpu,
+ thread);
+ }
}
return 0;