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, 45 insertions, 0 deletions

diff --git a/tools/perf/util/counts.h b/tools/perf/util/counts.h
new file mode 100644
index 000000000..42760242e
--- /dev/null
+++ b/tools/perf/util/counts.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PERF_COUNTS_H
+#define __PERF_COUNTS_H
+
+#include <linux/types.h>
+#include <internal/xyarray.h>
+#include <perf/evsel.h>
+#include <stdbool.h>
+
+struct evsel;
+
+struct perf_counts {
+	s8			  scaled;
+	struct xyarray		  *values;
+	struct xyarray		  *loaded;
+};
+
+
+static inline struct perf_counts_values*
+perf_counts(struct perf_counts *counts, int cpu_map_idx, int thread)
+{
+	return xyarray__entry(counts->values, cpu_map_idx, thread);
+}
+
+static inline bool
+perf_counts__is_loaded(struct perf_counts *counts, int cpu_map_idx, int thread)
+{
+	return *((bool *) xyarray__entry(counts->loaded, cpu_map_idx, thread));
+}
+
+static inline void
+perf_counts__set_loaded(struct perf_counts *counts, int cpu_map_idx, int thread, bool loaded)
+{
+	*((bool *) xyarray__entry(counts->loaded, cpu_map_idx, thread)) = loaded;
+}
+
+struct perf_counts *perf_counts__new(int ncpus, int nthreads);
+void perf_counts__delete(struct perf_counts *counts);
+void perf_counts__reset(struct perf_counts *counts);
+
+void evsel__reset_counts(struct evsel *evsel);
+int evsel__alloc_counts(struct evsel *evsel);
+void evsel__free_counts(struct evsel *evsel);
+
+#endif /* __PERF_COUNTS_H */