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, 74 insertions, 0 deletions

diff --git a/drivers/comedi/proc.c b/drivers/comedi/proc.c
new file mode 100644
index 000000000..2e4496633
--- /dev/null
+++ b/drivers/comedi/proc.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * /proc interface for comedi
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
+ */
+
+/*
+ * This is some serious bloatware.
+ *
+ * Taken from Dave A.'s PCL-711 driver, 'cuz I thought it
+ * was cool.
+ */
+
+#include <linux/comedi/comedidev.h>
+#include "comedi_internal.h"
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+static int comedi_read(struct seq_file *m, void *v)
+{
+	int i;
+	int devices_q = 0;
+	struct comedi_driver *driv;
+
+	seq_printf(m, "comedi version " COMEDI_RELEASE "\nformat string: %s\n",
+		   "\"%2d: %-20s %-20s %4d\", i, driver_name, board_name, n_subdevices");
+
+	for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) {
+		struct comedi_device *dev = comedi_dev_get_from_minor(i);
+
+		if (!dev)
+			continue;
+
+		down_read(&dev->attach_lock);
+		if (dev->attached) {
+			devices_q = 1;
+			seq_printf(m, "%2d: %-20s %-20s %4d\n",
+				   i, dev->driver->driver_name,
+				   dev->board_name, dev->n_subdevices);
+		}
+		up_read(&dev->attach_lock);
+		comedi_dev_put(dev);
+	}
+	if (!devices_q)
+		seq_puts(m, "no devices\n");
+
+	mutex_lock(&comedi_drivers_list_lock);
+	for (driv = comedi_drivers; driv; driv = driv->next) {
+		seq_printf(m, "%s:\n", driv->driver_name);
+		for (i = 0; i < driv->num_names; i++)
+			seq_printf(m, " %s\n",
+				   *(char **)((char *)driv->board_name +
+					      i * driv->offset));
+
+		if (!driv->num_names)
+			seq_printf(m, " %s\n", driv->driver_name);
+	}
+	mutex_unlock(&comedi_drivers_list_lock);
+
+	return 0;
+}
+
+void __init comedi_proc_init(void)
+{
+	if (!proc_create_single("comedi", 0444, NULL, comedi_read))
+		pr_warn("comedi: unable to create proc entry\n");
+}
+
+void comedi_proc_cleanup(void)
+{
+	remove_proc_entry("comedi", NULL);
+}