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, 193 insertions, 0 deletions

diff --git a/drivers/hid/hid-axff.c b/drivers/hid/hid-axff.c
new file mode 100644
index 000000000..3c5c2bf02
--- /dev/null
+++ b/drivers/hid/hid-axff.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Force feedback support for ACRUX game controllers
+ *
+ * From what I have gathered, these devices are mass produced in China
+ * by several vendors. They often share the same design as the original
+ * Xbox 360 controller.
+ *
+ * 1a34:0802 "ACRUX USB GAMEPAD 8116"
+ *  - tested with an EXEQ EQ-PCU-02090 game controller.
+ *
+ * Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru>
+ */
+
+/*
+ */
+
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#ifdef CONFIG_HID_ACRUX_FF
+
+struct axff_device {
+	struct hid_report *report;
+};
+
+static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
+{
+	struct hid_device *hid = input_get_drvdata(dev);
+	struct axff_device *axff = data;
+	struct hid_report *report = axff->report;
+	int field_count = 0;
+	int left, right;
+	int i, j;
+
+	left = effect->u.rumble.strong_magnitude;
+	right = effect->u.rumble.weak_magnitude;
+
+	dbg_hid("called with 0x%04x 0x%04x", left, right);
+
+	left = left * 0xff / 0xffff;
+	right = right * 0xff / 0xffff;
+
+	for (i = 0; i < report->maxfield; i++) {
+		for (j = 0; j < report->field[i]->report_count; j++) {
+			report->field[i]->value[j] =
+				field_count % 2 ? right : left;
+			field_count++;
+		}
+	}
+
+	dbg_hid("running with 0x%02x 0x%02x", left, right);
+	hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT);
+
+	return 0;
+}
+
+static int axff_init(struct hid_device *hid)
+{
+	struct axff_device *axff;
+	struct hid_report *report;
+	struct hid_input *hidinput;
+	struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list;
+	struct input_dev *dev;
+	int field_count = 0;
+	int i, j;
+	int error;
+
+	if (list_empty(&hid->inputs)) {
+		hid_err(hid, "no inputs found\n");
+		return -ENODEV;
+	}
+	hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
+	dev = hidinput->input;
+
+	if (list_empty(report_list)) {
+		hid_err(hid, "no output reports found\n");
+		return -ENODEV;
+	}
+
+	report = list_first_entry(report_list, struct hid_report, list);
+	for (i = 0; i < report->maxfield; i++) {
+		for (j = 0; j < report->field[i]->report_count; j++) {
+			report->field[i]->value[j] = 0x00;
+			field_count++;
+		}
+	}
+
+	if (field_count < 4 && hid->product != 0xf705) {
+		hid_err(hid, "not enough fields in the report: %d\n",
+			field_count);
+		return -ENODEV;
+	}
+
+	axff = kzalloc_obj(struct axff_device);
+	if (!axff)
+		return -ENOMEM;
+
+	set_bit(FF_RUMBLE, dev->ffbit);
+
+	error = input_ff_create_memless(dev, axff, axff_play);
+	if (error)
+		goto err_free_mem;
+
+	axff->report = report;
+	hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT);
+
+	hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun <x0r@dv-life.ru>\n");
+
+	return 0;
+
+err_free_mem:
+	kfree(axff);
+	return error;
+}
+#else
+static inline int axff_init(struct hid_device *hid)
+{
+	return 0;
+}
+#endif
+
+static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+	int error;
+
+	dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n");
+
+	error = hid_parse(hdev);
+	if (error) {
+		hid_err(hdev, "parse failed\n");
+		return error;
+	}
+
+	error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
+	if (error) {
+		hid_err(hdev, "hw start failed\n");
+		return error;
+	}
+
+	error = axff_init(hdev);
+	if (error) {
+		/*
+		 * Do not fail device initialization completely as device
+		 * may still be partially operable, just warn.
+		 */
+		hid_warn(hdev,
+			 "Failed to enable force feedback support, error: %d\n",
+			 error);
+	}
+
+	/*
+	 * We need to start polling device right away, otherwise
+	 * it will go into a coma.
+	 */
+	error = hid_hw_open(hdev);
+	if (error) {
+		dev_err(&hdev->dev, "hw open failed\n");
+		hid_hw_stop(hdev);
+		return error;
+	}
+
+	return 0;
+}
+
+static void ax_remove(struct hid_device *hdev)
+{
+	hid_hw_close(hdev);
+	hid_hw_stop(hdev);
+}
+
+static const struct hid_device_id ax_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705), },
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, ax_devices);
+
+static struct hid_driver ax_driver = {
+	.name		= "acrux",
+	.id_table	= ax_devices,
+	.probe		= ax_probe,
+	.remove		= ax_remove,
+};
+module_hid_driver(ax_driver);
+
+MODULE_AUTHOR("Sergei Kolzun");
+MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers");
+MODULE_LICENSE("GPL");