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, 134 insertions, 0 deletions

diff --git a/drivers/input/misc/pcspkr.c b/drivers/input/misc/pcspkr.c
new file mode 100644
index 000000000..046780840
--- /dev/null
+++ b/drivers/input/misc/pcspkr.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  PC Speaker beeper driver for Linux
+ *
+ *  Copyright (c) 2002 Vojtech Pavlik
+ *  Copyright (c) 1992 Orest Zborowski
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i8253.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/timex.h>
+#include <linux/io.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("PC Speaker beeper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcspkr");
+
+static int pcspkr_event(struct input_dev *dev, unsigned int type,
+			unsigned int code, int value)
+{
+	unsigned int count = 0;
+	unsigned long flags;
+
+	if (type != EV_SND)
+		return -EINVAL;
+
+	switch (code) {
+	case SND_BELL:
+		if (value)
+			value = 1000;
+		break;
+	case SND_TONE:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (value > 20 && value < 32767)
+		count = PIT_TICK_RATE / value;
+
+	raw_spin_lock_irqsave(&i8253_lock, flags);
+
+	if (count) {
+		/* set command for counter 2, 2 byte write */
+		outb_p(0xB6, 0x43);
+		/* select desired HZ */
+		outb_p(count & 0xff, 0x42);
+		outb((count >> 8) & 0xff, 0x42);
+		/* enable counter 2 */
+		outb_p(inb_p(0x61) | 3, 0x61);
+	} else {
+		/* disable counter 2 */
+		outb(inb_p(0x61) & 0xFC, 0x61);
+	}
+
+	raw_spin_unlock_irqrestore(&i8253_lock, flags);
+
+	return 0;
+}
+
+static int pcspkr_probe(struct platform_device *dev)
+{
+	struct input_dev *pcspkr_dev;
+	int err;
+
+	pcspkr_dev = input_allocate_device();
+	if (!pcspkr_dev)
+		return -ENOMEM;
+
+	pcspkr_dev->name = "PC Speaker";
+	pcspkr_dev->phys = "isa0061/input0";
+	pcspkr_dev->id.bustype = BUS_ISA;
+	pcspkr_dev->id.vendor = 0x001f;
+	pcspkr_dev->id.product = 0x0001;
+	pcspkr_dev->id.version = 0x0100;
+	pcspkr_dev->dev.parent = &dev->dev;
+
+	pcspkr_dev->evbit[0] = BIT_MASK(EV_SND);
+	pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+	pcspkr_dev->event = pcspkr_event;
+
+	err = input_register_device(pcspkr_dev);
+	if (err) {
+		input_free_device(pcspkr_dev);
+		return err;
+	}
+
+	platform_set_drvdata(dev, pcspkr_dev);
+
+	return 0;
+}
+
+static void pcspkr_remove(struct platform_device *dev)
+{
+	struct input_dev *pcspkr_dev = platform_get_drvdata(dev);
+
+	input_unregister_device(pcspkr_dev);
+	/* turn off the speaker */
+	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+}
+
+static int pcspkr_suspend(struct device *dev)
+{
+	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+	return 0;
+}
+
+static void pcspkr_shutdown(struct platform_device *dev)
+{
+	/* turn off the speaker */
+	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+}
+
+static const struct dev_pm_ops pcspkr_pm_ops = {
+	.suspend = pcspkr_suspend,
+};
+
+static struct platform_driver pcspkr_platform_driver = {
+	.driver		= {
+		.name	= "pcspkr",
+		.pm	= &pcspkr_pm_ops,
+	},
+	.probe		= pcspkr_probe,
+	.remove		= pcspkr_remove,
+	.shutdown	= pcspkr_shutdown,
+};
+module_platform_driver(pcspkr_platform_driver);
+