1 files changed, 8 insertions, 38 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index c12655af2b88..1c2ac148a7d5 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -132,8 +132,6 @@ static struct stats walltime_nsecs_stats;
 static int create_perf_stat_counter(struct perf_evsel *evsel)
 {
 	struct perf_event_attr *attr = &evsel->attr;
-	bool exclude_guest_missing = false;
-	int ret;
 
 	if (scale)
 		attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
@@ -141,16 +139,8 @@ static int create_perf_stat_counter(struct perf_evsel *evsel)
 
 	attr->inherit = !no_inherit;
 
-retry:
-	if (exclude_guest_missing)
-		evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
-
-	if (perf_target__has_cpu(&target)) {
-		ret = perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
-		if (ret)
-			goto check_ret;
-		return 0;
-	}
+	if (perf_target__has_cpu(&target))
+		return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
 
 	if (!perf_target__has_task(&target) &&
 	    perf_evsel__is_group_leader(evsel)) {
@@ -158,21 +148,7 @@ retry:
 		attr->enable_on_exec = 1;
 	}
 
-	ret = perf_evsel__open_per_thread(evsel, evsel_list->threads);
-	if (!ret)
-		return 0;
-	/* fall through */
-check_ret:
-	if (ret && errno == EINVAL) {
-		if (!exclude_guest_missing &&
-		    (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
-			pr_debug("Old kernel, cannot exclude "
-				 "guest or host samples.\n");
-			exclude_guest_missing = true;
-			goto retry;
-		}
-	}
-	return ret;
+	return perf_evsel__open_per_thread(evsel, evsel_list->threads);
 }
 
 /*
@@ -271,6 +247,7 @@ static int read_counter(struct perf_evsel *counter)
 
 static int __run_perf_stat(int argc __maybe_unused, const char **argv)
 {
+	char msg[512];
 	unsigned long long t0, t1;
 	struct perf_evsel *counter;
 	int status = 0;
@@ -348,20 +325,13 @@ static int __run_perf_stat(int argc __maybe_unused, const char **argv)
 				continue;
 			}
 
-			if (errno == EPERM || errno == EACCES) {
-				error("You may not have permission to collect %sstats.\n"
-				      "\t Consider tweaking"
-				      " /proc/sys/kernel/perf_event_paranoid or running as root.",
-				      target.system_wide ? "system-wide " : "");
-			} else {
-				error("open_counter returned with %d (%s). "
-				      "/bin/dmesg may provide additional information.\n",
-				       errno, strerror(errno));
-			}
+			perf_evsel__open_strerror(counter, &target,
+						  errno, msg, sizeof(msg));
+			ui__error("%s\n", msg);
+
 			if (child_pid != -1)
 				kill(child_pid, SIGTERM);
 
-			pr_err("Not all events could be opened.\n");
 			return -1;
 		}
 		counter->supported = true;