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, 254 insertions, 0 deletions

diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c
new file mode 100644
index 000000000..ba79dff21
--- /dev/null
+++ b/drivers/input/tablet/acecad.c
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (c) 2001-2005 Edouard TISSERANT   <edouard.tisserant@wanadoo.fr>
+ *  Copyright (c) 2004-2005 Stephane VOLTZ      <svoltz@numericable.fr>
+ *
+ *  USB Acecad "Acecad Flair" tablet support
+ *
+ *  Changelog:
+ *      v3.2 - Added sysfs support
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb/input.h>
+
+MODULE_AUTHOR("Edouard TISSERANT <edouard.tisserant@wanadoo.fr>");
+MODULE_DESCRIPTION("USB Acecad Flair tablet driver");
+MODULE_LICENSE("GPL");
+
+#define USB_VENDOR_ID_ACECAD	0x0460
+#define USB_DEVICE_ID_FLAIR	0x0004
+#define USB_DEVICE_ID_302	0x0008
+
+struct usb_acecad {
+	char name[128];
+	char phys[64];
+	struct usb_interface *intf;
+	struct input_dev *input;
+	struct urb *irq;
+
+	unsigned char *data;
+	dma_addr_t data_dma;
+};
+
+static void usb_acecad_irq(struct urb *urb)
+{
+	struct usb_acecad *acecad = urb->context;
+	unsigned char *data = acecad->data;
+	struct input_dev *dev = acecad->input;
+	struct usb_interface *intf = acecad->intf;
+	struct usb_device *udev = interface_to_usbdev(intf);
+	int prox, status;
+
+	switch (urb->status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
+			__func__, urb->status);
+		return;
+	default:
+		dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
+			__func__, urb->status);
+		goto resubmit;
+	}
+
+	prox = (data[0] & 0x04) >> 2;
+	input_report_key(dev, BTN_TOOL_PEN, prox);
+
+	if (prox) {
+		int x = data[1] | (data[2] << 8);
+		int y = data[3] | (data[4] << 8);
+		/* Pressure should compute the same way for flair and 302 */
+		int pressure = data[5] | (data[6] << 8);
+		int touch = data[0] & 0x01;
+		int stylus = (data[0] & 0x10) >> 4;
+		int stylus2 = (data[0] & 0x20) >> 5;
+		input_report_abs(dev, ABS_X, x);
+		input_report_abs(dev, ABS_Y, y);
+		input_report_abs(dev, ABS_PRESSURE, pressure);
+		input_report_key(dev, BTN_TOUCH, touch);
+		input_report_key(dev, BTN_STYLUS, stylus);
+		input_report_key(dev, BTN_STYLUS2, stylus2);
+	}
+
+	/* event termination */
+	input_sync(dev);
+
+resubmit:
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status)
+		dev_err(&intf->dev,
+			"can't resubmit intr, %s-%s/input0, status %d\n",
+			udev->bus->bus_name,
+			udev->devpath, status);
+}
+
+static int usb_acecad_open(struct input_dev *dev)
+{
+	struct usb_acecad *acecad = input_get_drvdata(dev);
+
+	acecad->irq->dev = interface_to_usbdev(acecad->intf);
+	if (usb_submit_urb(acecad->irq, GFP_KERNEL))
+		return -EIO;
+
+	return 0;
+}
+
+static void usb_acecad_close(struct input_dev *dev)
+{
+	struct usb_acecad *acecad = input_get_drvdata(dev);
+
+	usb_kill_urb(acecad->irq);
+}
+
+static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct usb_device *dev = interface_to_usbdev(intf);
+	struct usb_host_interface *interface = intf->cur_altsetting;
+	struct usb_endpoint_descriptor *endpoint;
+	struct usb_acecad *acecad;
+	struct input_dev *input_dev;
+	int pipe, maxp;
+	int err;
+
+	if (interface->desc.bNumEndpoints != 1)
+		return -ENODEV;
+
+	endpoint = &interface->endpoint[0].desc;
+
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -ENODEV;
+
+	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+	maxp = usb_maxpacket(dev, pipe);
+
+	acecad = kzalloc_obj(*acecad);
+	input_dev = input_allocate_device();
+	if (!acecad || !input_dev) {
+		err = -ENOMEM;
+		goto fail1;
+	}
+
+	acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
+	if (!acecad->data) {
+		err= -ENOMEM;
+		goto fail1;
+	}
+
+	acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
+	if (!acecad->irq) {
+		err = -ENOMEM;
+		goto fail2;
+	}
+
+	acecad->intf = intf;
+	acecad->input = input_dev;
+
+	if (dev->manufacturer)
+		strscpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
+
+	if (dev->product) {
+		if (dev->manufacturer)
+			strlcat(acecad->name, " ", sizeof(acecad->name));
+		strlcat(acecad->name, dev->product, sizeof(acecad->name));
+	}
+
+	usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
+	strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
+
+	input_dev->name = acecad->name;
+	input_dev->phys = acecad->phys;
+	usb_to_input_id(dev, &input_dev->id);
+	input_dev->dev.parent = &intf->dev;
+
+	input_set_drvdata(input_dev, acecad);
+
+	input_dev->open = usb_acecad_open;
+	input_dev->close = usb_acecad_close;
+
+	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+	input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
+		BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
+		BIT_MASK(BTN_STYLUS2);
+
+	switch (id->driver_info) {
+	case 0:
+		input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
+		input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
+		input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
+		if (!strlen(acecad->name))
+			snprintf(acecad->name, sizeof(acecad->name),
+				"USB Acecad Flair Tablet %04x:%04x",
+				le16_to_cpu(dev->descriptor.idVendor),
+				le16_to_cpu(dev->descriptor.idProduct));
+		break;
+
+	case 1:
+		input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
+		input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
+		input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
+		if (!strlen(acecad->name))
+			snprintf(acecad->name, sizeof(acecad->name),
+				"USB Acecad 302 Tablet %04x:%04x",
+				le16_to_cpu(dev->descriptor.idVendor),
+				le16_to_cpu(dev->descriptor.idProduct));
+		break;
+	}
+
+	usb_fill_int_urb(acecad->irq, dev, pipe,
+			acecad->data, maxp > 8 ? 8 : maxp,
+			usb_acecad_irq, acecad, endpoint->bInterval);
+	acecad->irq->transfer_dma = acecad->data_dma;
+	acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	err = input_register_device(acecad->input);
+	if (err)
+		goto fail3;
+
+	usb_set_intfdata(intf, acecad);
+
+	return 0;
+
+ fail3:	usb_free_urb(acecad->irq);
+ fail2:	usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
+ fail1: input_free_device(input_dev);
+	kfree(acecad);
+	return err;
+}
+
+static void usb_acecad_disconnect(struct usb_interface *intf)
+{
+	struct usb_acecad *acecad = usb_get_intfdata(intf);
+	struct usb_device *udev = interface_to_usbdev(intf);
+
+	usb_set_intfdata(intf, NULL);
+
+	input_unregister_device(acecad->input);
+	usb_free_urb(acecad->irq);
+	usb_free_coherent(udev, 8, acecad->data, acecad->data_dma);
+	kfree(acecad);
+}
+
+static const struct usb_device_id usb_acecad_id_table[] = {
+	{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
+	{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302),	 .driver_info = 1 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
+
+static struct usb_driver usb_acecad_driver = {
+	.name =		"usb_acecad",
+	.probe =	usb_acecad_probe,
+	.disconnect =	usb_acecad_disconnect,
+	.id_table =	usb_acecad_id_table,
+};
+
+module_usb_driver(usb_acecad_driver);