scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/tools/perf/util/evswitch.h b/tools/perf/util/evswitch.h
new file mode 100644
index 000000000..8ffdbe526
--- /dev/null
+++ b/tools/perf/util/evswitch.h
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+#ifndef __PERF_EVSWITCH_H
+#define __PERF_EVSWITCH_H 1
+
+#include <stdbool.h>
+#include <stdio.h>
+
+struct evsel;
+struct evlist;
+
+struct evswitch {
+	struct evsel *on, *off;
+	const char   *on_name, *off_name;
+	bool	     discarding;
+	bool	     show_on_off_events;
+};
+
+int evswitch__init(struct evswitch *evswitch, struct evlist *evlist, FILE *fp);
+
+bool evswitch__discard(struct evswitch *evswitch, struct evsel *evsel);
+
+#define OPTS_EVSWITCH(evswitch)								  \
+	OPT_STRING(0, "switch-on", &(evswitch)->on_name,				  \
+		   "event", "Consider events after the occurrence of this event"),	  \
+	OPT_STRING(0, "switch-off", &(evswitch)->off_name,				  \
+		   "event", "Stop considering events after the occurrence of this event"), \
+	OPT_BOOLEAN(0, "show-on-off-events", &(evswitch)->show_on_off_events,		  \
+		    "Show the on/off switch events, used with --switch-on and --switch-off")
+
+#endif /* __PERF_EVSWITCH_H */