perf evlist: Introduce evsel list accessors

To replace the longer list_entry constructs for things that are widely
used:

	perf_evlist__{first,last}(evlist)
	perf_evsel__next(evsel)

Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@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 <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ng7azq26wg1jd801qqpcozwp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5a097beb8685..0513aaa659f9 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -509,7 +509,7 @@ static void perf_top__handle_keypress(struct perf_top *top, int c)
                                 prompt_integer(&counter, "Enter details event counter");
 
                                 if (counter >= top->evlist->nr_entries) {
-                                        top->sym_evsel = list_entry(top->evlist->entries.next, struct perf_evsel, node);
+                                        top->sym_evsel = perf_evlist__first(top->evlist);
                                         fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel));
                                         sleep(1);
                                         break;
@@ -518,7 +518,7 @@ static void perf_top__handle_keypress(struct perf_top *top, int c)
                                         if (top->sym_evsel->idx == counter)
                                                 break;
                         } else
-                                top->sym_evsel = list_entry(top->evlist->entries.next, struct perf_evsel, node);
+                                top->sym_evsel = perf_evlist__first(top->evlist);
                         break;
                 case 'f':
                         prompt_integer(&top->count_filter, "Enter display event count filter");
@@ -1326,7 +1326,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
                         pos->attr.sample_period = top.default_interval;
         }
 
-        top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
+        top.sym_evsel = perf_evlist__first(top.evlist);
 
         symbol_conf.priv_size = sizeof(struct annotation);