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perf evsel: Set leader evsel's ->leader to itself
Currently only non-leader members are set ->leader to the leader evsel of the group and the leader has set NULL. Thus it requires special casing for leader evsels. Set ->leader to itself will remove this. Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.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/1354171126-14387-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -111,7 +111,6 @@ void __perf_evlist__set_leader(struct list_head *list)
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struct perf_evsel *evsel, *leader;
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leader = list_entry(list->next, struct perf_evsel, node);
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leader->leader = NULL;
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list_for_each_entry(evsel, list, node) {
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if (evsel != leader)
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@ -55,6 +55,7 @@ void perf_evsel__init(struct perf_evsel *evsel,
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{
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evsel->idx = idx;
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evsel->attr = *attr;
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evsel->leader = evsel;
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INIT_LIST_HEAD(&evsel->node);
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hists__init(&evsel->hists);
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evsel->sample_size = __perf_evsel__sample_size(attr->sample_type);
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@ -228,6 +228,6 @@ static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
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static inline bool perf_evsel__is_group_member(const struct perf_evsel *evsel)
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{
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return evsel->leader != NULL;
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return evsel->leader != evsel;
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}
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#endif /* __PERF_EVSEL_H */
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