libperf: Add perf_evlist__first()/last() functions
Add perf_evlist__first()/last() functions to libperf, as internal functions and rename perf's origins to evlist__first/last. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-29-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo

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70c20369ee
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@@ -71,7 +71,7 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
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}
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if (top->evlist->core.nr_entries == 1) {
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struct evsel *first = perf_evlist__first(top->evlist);
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struct evsel *first = evlist__first(top->evlist);
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ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
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(uint64_t)first->core.attr.sample_period,
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opts->freq ? "Hz" : "");
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