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, 184 insertions, 0 deletions

diff --git a/drivers/regulator/max8893.c b/drivers/regulator/max8893.c
new file mode 100644
index 000000000..5a90633d8
--- /dev/null
+++ b/drivers/regulator/max8893.c
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+static const struct regulator_ops max8893_ops = {
+	.is_enabled		= regulator_is_enabled_regmap,
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
+	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.list_voltage		= regulator_list_voltage_linear,
+	.map_voltage		= regulator_map_voltage_linear,
+};
+
+static const struct regulator_desc max8893_regulators[] = {
+	{
+		.name = "BUCK",
+		.supply_name = "in-buck",
+		.of_match = of_match_ptr("buck"),
+		.regulators_node = of_match_ptr("regulators"),
+		.n_voltages = 0x11,
+		.id = 6,
+		.ops = &max8893_ops,
+		.type = REGULATOR_VOLTAGE,
+		.owner = THIS_MODULE,
+		.min_uV = 800000,
+		.uV_step = 100000,
+		.vsel_reg = 0x4,
+		.vsel_mask = 0x1f,
+		.enable_reg = 0x0,
+		.enable_mask = BIT(7),
+	},
+	{
+		.name = "LDO1",
+		.supply_name = "in-ldo1",
+		.of_match = of_match_ptr("ldo1"),
+		.regulators_node = of_match_ptr("regulators"),
+		.n_voltages = 0x12,
+		.id = 1,
+		.ops = &max8893_ops,
+		.type = REGULATOR_VOLTAGE,
+		.owner = THIS_MODULE,
+		.min_uV = 1600000,
+		.uV_step = 100000,
+		.vsel_reg = 0x5,
+		.vsel_mask = 0x1f,
+		.enable_reg = 0x0,
+		.enable_mask = BIT(5),
+	},
+	{
+		.name = "LDO2",
+		.supply_name = "in-ldo2",
+		.of_match = of_match_ptr("ldo2"),
+		.regulators_node = of_match_ptr("regulators"),
+		.n_voltages = 0x16,
+		.id = 2,
+		.ops = &max8893_ops,
+		.type = REGULATOR_VOLTAGE,
+		.owner = THIS_MODULE,
+		.min_uV = 1200000,
+		.uV_step = 100000,
+		.vsel_reg = 0x6,
+		.vsel_mask = 0x1f,
+		.enable_reg = 0x0,
+		.enable_mask = BIT(4),
+	},
+	{
+		.name = "LDO3",
+		.supply_name = "in-ldo3",
+		.of_match = of_match_ptr("ldo3"),
+		.regulators_node = of_match_ptr("regulators"),
+		.n_voltages = 0x12,
+		.id = 3,
+		.ops = &max8893_ops,
+		.type = REGULATOR_VOLTAGE,
+		.owner = THIS_MODULE,
+		.min_uV = 1600000,
+		.uV_step = 100000,
+		.vsel_reg = 0x7,
+		.vsel_mask = 0x1f,
+		.enable_reg = 0x0,
+		.enable_mask = BIT(3),
+	},
+	{
+		.name = "LDO4",
+		.supply_name = "in-ldo4",
+		.of_match = of_match_ptr("ldo4"),
+		.regulators_node = of_match_ptr("regulators"),
+		.n_voltages = 0x1a,
+		.id = 4,
+		.ops = &max8893_ops,
+		.type = REGULATOR_VOLTAGE,
+		.owner = THIS_MODULE,
+		.min_uV = 800000,
+		.uV_step = 100000,
+		.vsel_reg = 0x8,
+		.vsel_mask = 0x1f,
+		.enable_reg = 0x0,
+		.enable_mask = BIT(2),
+	},
+	{
+		.name = "LDO5",
+		.supply_name = "in-ldo5",
+		.of_match = of_match_ptr("ldo5"),
+		.regulators_node = of_match_ptr("regulators"),
+		.n_voltages = 0x1a,
+		.id = 5,
+		.ops = &max8893_ops,
+		.type = REGULATOR_VOLTAGE,
+		.owner = THIS_MODULE,
+		.min_uV = 800000,
+		.uV_step = 100000,
+		.vsel_reg = 0x9,
+		.vsel_mask = 0x1f,
+		.enable_reg = 0x0,
+		.enable_mask = BIT(1),
+	}
+};
+
+static const struct regmap_config max8893_regmap = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static int max8893_probe(struct i2c_client *i2c)
+{
+	int id, ret;
+	struct regulator_config config = {.dev = &i2c->dev};
+	struct regmap *regmap = devm_regmap_init_i2c(i2c, &max8893_regmap);
+
+	if (IS_ERR(regmap)) {
+		ret = PTR_ERR(regmap);
+		dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
+		return ret;
+	}
+
+	for (id = 0; id < ARRAY_SIZE(max8893_regulators); id++) {
+		struct regulator_dev *rdev;
+		rdev = devm_regulator_register(&i2c->dev,
+					       &max8893_regulators[id],
+					       &config);
+		if (IS_ERR(rdev)) {
+			ret = PTR_ERR(rdev);
+			dev_err(&i2c->dev, "failed to register %s: %d\n",
+				max8893_regulators[id].name, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id max8893_dt_match[] = {
+	{ .compatible = "maxim,max8893" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, max8893_dt_match);
+#endif
+
+static const struct i2c_device_id max8893_ids[] = {
+	{ "max8893" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, max8893_ids);
+
+static struct i2c_driver max8893_driver = {
+	.probe		= max8893_probe,
+	.driver		= {
+		.name	= "max8893",
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+		.of_match_table = of_match_ptr(max8893_dt_match),
+	},
+	.id_table	= max8893_ids,
+};
+
+module_i2c_driver(max8893_driver);
+
+MODULE_DESCRIPTION("Maxim MAX8893 PMIC driver");
+MODULE_AUTHOR("Sergey Larin <cerg2010cerg2010@mail.ru>");
+MODULE_LICENSE("GPL");