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, 64 insertions, 0 deletions

diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h
new file mode 100644
index 000000000..4d72c5fa5
--- /dev/null
+++ b/tools/perf/util/mmap.h
@@ -0,0 +1,64 @@
+#ifndef __PERF_MMAP_H
+#define __PERF_MMAP_H 1
+
+#include <internal/mmap.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <perf/cpumap.h>
+#ifdef HAVE_AIO_SUPPORT
+#include <aio.h>
+#endif
+#include "auxtrace.h"
+#include "util/compress.h"
+
+struct aiocb;
+
+struct mmap_cpu_mask {
+	unsigned long *bits;
+	size_t nbits;
+};
+
+#define MMAP_CPU_MASK_BYTES(m) \
+	(BITS_TO_LONGS(((struct mmap_cpu_mask *)m)->nbits) * sizeof(unsigned long))
+
+/**
+ * struct mmap - perf's ring buffer mmap details
+ *
+ * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this
+ */
+struct mmap {
+	struct perf_mmap	core;
+	struct auxtrace_mmap auxtrace_mmap;
+#ifdef HAVE_AIO_SUPPORT
+	struct {
+		void		 **data;
+		struct aiocb	 *cblocks;
+		struct aiocb	 **aiocb;
+		int		 nr_cblocks;
+	} aio;
+#endif
+	struct mmap_cpu_mask	affinity_mask;
+	void		*data;
+	struct perf_data_file *file;
+	struct zstd_data      zstd_data;
+};
+
+struct mmap_params {
+	struct perf_mmap_param core;
+	int nr_cblocks, affinity, flush, comp_level;
+	struct auxtrace_mmap_params auxtrace_mp;
+};
+
+int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, struct perf_cpu cpu);
+void mmap__munmap(struct mmap *map);
+
+union perf_event *perf_mmap__read_forward(struct mmap *map);
+
+int perf_mmap__push(struct mmap *md, void *to,
+		    int push(struct mmap *map, void *to, void *buf, size_t size));
+
+size_t mmap__mmap_len(struct mmap *map);
+
+void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag);
+
+#endif /*__PERF_MMAP_H */