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, 50 insertions, 0 deletions

diff --git a/tools/include/nolibc/sched.h b/tools/include/nolibc/sched.h
new file mode 100644
index 000000000..7a5f6d948
--- /dev/null
+++ b/tools/include/nolibc/sched.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * sched function definitions for NOLIBC
+ * Copyright (C) 2025 Thomas Weißschuh <linux@weissschuh.net>
+ */
+
+/* make sure to include all global symbols */
+#include "nolibc.h"
+
+#ifndef _NOLIBC_SCHED_H
+#define _NOLIBC_SCHED_H
+
+#include "sys.h"
+
+#include <linux/sched.h>
+
+/*
+ * int setns(int fd, int nstype);
+ */
+
+static __attribute__((unused))
+int _sys_setns(int fd, int nstype)
+{
+	return __nolibc_syscall2(__NR_setns, fd, nstype);
+}
+
+static __attribute__((unused))
+int setns(int fd, int nstype)
+{
+	return __sysret(_sys_setns(fd, nstype));
+}
+
+
+/*
+ * int unshare(int flags);
+ */
+
+static __attribute__((unused))
+int _sys_unshare(int flags)
+{
+	return __nolibc_syscall1(__NR_unshare, flags);
+}
+
+static __attribute__((unused))
+int unshare(int flags)
+{
+	return __sysret(_sys_unshare(flags));
+}
+
+#endif /* _NOLIBC_SCHED_H */