perf evsel: Rename perf_evsel__group_idx() to evsel__group_idx()

As it is a 'struct evsel' method, not part of tools/lib/perf/, aka
libperf, to whom the perf_ prefix belongs.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-record.c

@@ -857,8 +857,7 @@ static int record__open(struct record *rec)
 				goto try_again;
 			}
 			rc = -errno;
-			perf_evsel__open_strerror(pos, &opts->target,
-						  errno, msg, sizeof(msg));
+			evsel__open_strerror(pos, &opts->target, errno, msg, sizeof(msg));
 			ui__error("%s\n", msg);
 			goto out;
 		}

tools/perf/builtin-stat.c

@@ -484,8 +484,7 @@ static enum counter_recovery stat_handle_error(struct evsel *counter)
 		}
 	}
 
-	perf_evsel__open_strerror(counter, &target,
-				  errno, msg, sizeof(msg));
+	evsel__open_strerror(counter, &target, errno, msg, sizeof(msg));
 	ui__error("%s\n", msg);
 
 	if (child_pid != -1)

tools/perf/builtin-top.c

@@ -1051,8 +1051,7 @@ static int perf_top__start_counters(struct perf_top *top)
 				goto try_again;
 			}
 
-			perf_evsel__open_strerror(counter, &opts->target,
-						  errno, msg, sizeof(msg));
+			evsel__open_strerror(counter, &opts->target, errno, msg, sizeof(msg));
 			ui__error("%s\n", msg);
 			goto out_err;
 		}

tools/perf/ui/hist.c

@@ -48,7 +48,7 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
 		struct hist_entry *pair;
 		int nr_members = evsel->core.nr_members;
 
-		prev_idx = perf_evsel__group_idx(evsel);
+		prev_idx = evsel__group_idx(evsel);
 
 		list_for_each_entry(pair, &he->pairs.head, pairs.node) {
 			u64 period = get_field(pair);
@@ -58,7 +58,7 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
 				continue;
 
 			evsel = hists_to_evsel(pair->hists);
-			idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
+			idx_delta = evsel__group_idx(evsel) - prev_idx - 1;
 
 			while (idx_delta--) {
 				/*
@@ -82,7 +82,7 @@ static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
 							  len, period);
 			}
 
-			prev_idx = perf_evsel__group_idx(evsel);
+			prev_idx = evsel__group_idx(evsel);
 		}
 
 		idx_delta = nr_members - prev_idx - 1;
@@ -164,12 +164,12 @@ static int hist_entry__new_pair(struct hist_entry *a, struct hist_entry *b,
 
 	list_for_each_entry(pair, &a->pairs.head, pairs.node) {
 		struct evsel *evsel = hists_to_evsel(pair->hists);
-		fa[perf_evsel__group_idx(evsel)] = get_field(pair);
+		fa[evsel__group_idx(evsel)] = get_field(pair);
 	}
 
 	list_for_each_entry(pair, &b->pairs.head, pairs.node) {
 		struct evsel *evsel = hists_to_evsel(pair->hists);
-		fb[perf_evsel__group_idx(evsel)] = get_field(pair);
+		fb[evsel__group_idx(evsel)] = get_field(pair);
 	}
 
 	*fields_a = fa;

tools/perf/util/evsel.c

@@ -1721,8 +1721,7 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
 
 			/*
 			 * If we succeeded but had to kill clockid, fail and
-			 * have perf_evsel__open_strerror() print us a nice
-			 * error.
+			 * have evsel__open_strerror() print us a nice error.
 			 */
 			if (perf_missing_features.clockid ||
 			    perf_missing_features.clockid_wrong) {
@@ -2474,8 +2473,8 @@ static bool find_process(const char *name)
 	return ret ? false : true;
 }
 
-int perf_evsel__open_strerror(struct evsel *evsel, struct target *target,
-			      int err, char *msg, size_t size)
+int evsel__open_strerror(struct evsel *evsel, struct target *target,
+			 int err, char *msg, size_t size)
 {
 	char sbuf[STRERR_BUFSIZE];
 	int printed = 0;

tools/perf/util/evsel.h

@@ -351,10 +351,10 @@ static inline bool evsel__is_clock(struct evsel *evsel)
 }
 
 bool evsel__fallback(struct evsel *evsel, int err, char *msg, size_t msgsize);
-int perf_evsel__open_strerror(struct evsel *evsel, struct target *target,
-			      int err, char *msg, size_t size);
+int evsel__open_strerror(struct evsel *evsel, struct target *target,
+			 int err, char *msg, size_t size);
 
-static inline int perf_evsel__group_idx(struct evsel *evsel)
+static inline int evsel__group_idx(struct evsel *evsel)
 {
 	return evsel->idx - evsel->leader->idx;
 }