Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 146 insertions, 97 deletions

diff --git a/drivers/hwmon/gl520sm.c b/drivers/hwmon/gl520sm.c
index cd6085bbfba..5ff452b6a4d 100644
--- a/drivers/hwmon/gl520sm.c
+++ b/drivers/hwmon/gl520sm.c
@@ -1,25 +1,25 @@
 /*
-    gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
-                monitoring
-    Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>,
-                              Kyösti Mälkki <kmalkki@cc.hut.fi>
-    Copyright (c) 2005        Maarten Deprez <maartendeprez@users.sourceforge.net>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
+ * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware
+ *	       monitoring
+ * Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>,
+ *			     Kyösti Mälkki <kmalkki@cc.hut.fi>
+ * Copyright (c) 2005	Maarten Deprez <maartendeprez@users.sourceforge.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
 
 #include <linux/module.h>
 #include <linux/init.h>
@@ -41,10 +41,11 @@ MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=tempe
 /* Addresses to scan */
 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
 
-/* Many GL520 constants specified below
-One of the inputs can be configured as either temp or voltage.
-That's why _TEMP2 and _IN4 access the same register
-*/
+/*
+ * Many GL520 constants specified below
+ * One of the inputs can be configured as either temp or voltage.
+ * That's why _TEMP2 and _IN4 access the same register
+ */
 
 /* The GL520 registers */
 #define GL520_REG_CHIP_ID		0x00
@@ -142,11 +143,11 @@ static ssize_t get_cpu_vid(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, get_cpu_vid, NULL);
 
-#define VDD_FROM_REG(val) (((val)*95+2)/4)
-#define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255))
+#define VDD_FROM_REG(val) (((val) * 95 + 2) / 4)
+#define VDD_TO_REG(val) SENSORS_LIMIT((((val) * 4 + 47) / 95), 0, 255)
 
-#define IN_FROM_REG(val) ((val)*19)
-#define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255))
+#define IN_FROM_REG(val) ((val) * 19)
+#define IN_TO_REG(val) SENSORS_LIMIT((((val) + 9) / 19), 0, 255)
 
 static ssize_t get_in_input(struct device *dev, struct device_attribute *attr,
 			    char *buf)
@@ -193,8 +194,13 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
 	int n = to_sensor_dev_attr(attr)->index;
-	long v = simple_strtol(buf, NULL, 10);
 	u8 r;
+	long v;
+	int err;
+
+	err = kstrtol(buf, 10, &v);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 
@@ -222,8 +228,13 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
 	int n = to_sensor_dev_attr(attr)->index;
-	long v = simple_strtol(buf, NULL, 10);
 	u8 r;
+	long v;
+	int err;
+
+	err = kstrtol(buf, 10, &v);
+	if (err)
+		return err;
 
 	if (n == 0)
 		r = VDD_TO_REG(v);
@@ -272,8 +283,10 @@ static SENSOR_DEVICE_ATTR(in4_max, S_IRUGO | S_IWUSR,
 		get_in_max, set_in_max, 4);
 
 #define DIV_FROM_REG(val) (1 << (val))
-#define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div))))
-#define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255))
+#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div))))
+#define FAN_TO_REG(val, div) ((val) <= 0 ? 0 : \
+	SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, \
+		      255))
 
 static ssize_t get_fan_input(struct device *dev, struct device_attribute *attr,
 			     char *buf)
@@ -317,8 +330,13 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
 	int n = to_sensor_dev_attr(attr)->index;
-	unsigned long v = simple_strtoul(buf, NULL, 10);
 	u8 r;
+	unsigned long v;
+	int err;
+
+	err = kstrtoul(buf, 10, &v);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	r = FAN_TO_REG(v, data->fan_div[n]);
@@ -351,16 +369,30 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
 	int n = to_sensor_dev_attr(attr)->index;
-	unsigned long v = simple_strtoul(buf, NULL, 10);
 	u8 r;
+	unsigned long v;
+	int err;
+
+	err = kstrtoul(buf, 10, &v);
+	if (err)
+		return err;
 
 	switch (v) {
-	case 1: r = 0; break;
-	case 2: r = 1; break;
-	case 4: r = 2; break;
-	case 8: r = 3; break;
+	case 1:
+		r = 0;
+		break;
+	case 2:
+		r = 1;
+		break;
+	case 4:
+		r = 2;
+		break;
+	case 8:
+		r = 3;
+		break;
 	default:
-		dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
+		dev_err(&client->dev,
+	"fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v);
 		return -EINVAL;
 	}
 
@@ -385,7 +417,15 @@ static ssize_t set_fan_off(struct device *dev, struct device_attribute *attr,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
-	u8 r = simple_strtoul(buf, NULL, 10)?1:0;
+	u8 r;
+	unsigned long v;
+	int err;
+
+	err = kstrtoul(buf, 10, &v);
+	if (err)
+		return err;
+
+	r = (v ? 1 : 0);
 
 	mutex_lock(&data->update_lock);
 	data->fan_off = r;
@@ -410,7 +450,8 @@ static DEVICE_ATTR(fan1_off, S_IRUGO | S_IWUSR,
 		get_fan_off, set_fan_off);
 
 #define TEMP_FROM_REG(val) (((val) - 130) * 1000)
-#define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255))
+#define TEMP_TO_REG(val) SENSORS_LIMIT(((((val) < 0 ? \
+			(val) - 500 : (val) + 500) / 1000) + 130), 0, 255)
 
 static ssize_t get_temp_input(struct device *dev, struct device_attribute *attr,
 			      char *buf)
@@ -430,8 +471,8 @@ static ssize_t get_temp_max(struct device *dev, struct device_attribute *attr,
 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n]));
 }
 
-static ssize_t get_temp_max_hyst(struct device *dev, struct device_attribute
-				 *attr, char *buf)
+static ssize_t get_temp_max_hyst(struct device *dev,
+				 struct device_attribute *attr, char *buf)
 {
 	int n = to_sensor_dev_attr(attr)->index;
 	struct gl520_data *data = gl520_update_device(dev);
@@ -445,7 +486,12 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
 	int n = to_sensor_dev_attr(attr)->index;
-	long v = simple_strtol(buf, NULL, 10);
+	long v;
+	int err;
+
+	err = kstrtol(buf, 10, &v);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->temp_max[n] = TEMP_TO_REG(v);
@@ -460,7 +506,12 @@ static ssize_t set_temp_max_hyst(struct device *dev, struct device_attribute
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
 	int n = to_sensor_dev_attr(attr)->index;
-	long v = simple_strtol(buf, NULL, 10);
+	long v;
+	int err;
+
+	err = kstrtol(buf, 10, &v);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->temp_max_hyst[n] = TEMP_TO_REG(v);
@@ -507,7 +558,15 @@ static ssize_t set_beep_enable(struct device *dev, struct device_attribute
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
-	u8 r = simple_strtoul(buf, NULL, 10)?0:1;
+	u8 r;
+	unsigned long v;
+	int err;
+
+	err = kstrtoul(buf, 10, &v);
+	if (err)
+		return err;
+
+	r = (v ? 0 : 1);
 
 	mutex_lock(&data->update_lock);
 	data->beep_enable = !r;
@@ -523,7 +582,12 @@ static ssize_t set_beep_mask(struct device *dev, struct device_attribute *attr,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct gl520_data *data = i2c_get_clientdata(client);
-	u8 r = simple_strtoul(buf, NULL, 10);
+	unsigned long r;
+	int err;
+
+	err = kstrtoul(buf, 10, &r);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	r &= data->alarm_mask;
@@ -575,7 +639,11 @@ static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
 	int bitnr = to_sensor_dev_attr(attr)->index;
 	unsigned long bit;
 
-	bit = simple_strtoul(buf, NULL, 10);
+	int err;
+
+	err = kstrtoul(buf, 10, &bit);
+	if (err)
+		return err;
 	if (bit & ~1)
 		return -EINVAL;
 
@@ -652,13 +720,16 @@ static const struct attribute_group gl520_group = {
 	.attrs = gl520_attributes,
 };
 
-static struct attribute *gl520_attributes_opt[] = {
+static struct attribute *gl520_attributes_in4[] = {
 	&sensor_dev_attr_in4_input.dev_attr.attr,
 	&sensor_dev_attr_in4_min.dev_attr.attr,
 	&sensor_dev_attr_in4_max.dev_attr.attr,
 	&sensor_dev_attr_in4_alarm.dev_attr.attr,
 	&sensor_dev_attr_in4_beep.dev_attr.attr,
+	NULL
+};
 
+static struct attribute *gl520_attributes_temp2[] = {
 	&sensor_dev_attr_temp2_input.dev_attr.attr,
 	&sensor_dev_attr_temp2_max.dev_attr.attr,
 	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
@@ -667,8 +738,12 @@ static struct attribute *gl520_attributes_opt[] = {
 	NULL
 };
 
-static const struct attribute_group gl520_group_opt = {
-	.attrs = gl520_attributes_opt,
+static const struct attribute_group gl520_group_in4 = {
+	.attrs = gl520_attributes_in4,
+};
+
+static const struct attribute_group gl520_group_temp2 = {
+	.attrs = gl520_attributes_temp2,
 };
 
 
@@ -717,35 +792,17 @@ static int gl520_probe(struct i2c_client *client,
 	gl520_init_client(client);
 
 	/* Register sysfs hooks */
-	if ((err = sysfs_create_group(&client->dev.kobj, &gl520_group)))
+	err = sysfs_create_group(&client->dev.kobj, &gl520_group);
+	if (err)
 		goto exit_free;
 
-	if (data->two_temps) {
-		if ((err = device_create_file(&client->dev,
-				&sensor_dev_attr_temp2_input.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_temp2_max.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_temp2_max_hyst.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_temp2_alarm.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_temp2_beep.dev_attr)))
-			goto exit_remove_files;
-	} else {
-		if ((err = device_create_file(&client->dev,
-				&sensor_dev_attr_in4_input.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_in4_min.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_in4_max.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_in4_alarm.dev_attr))
-		 || (err = device_create_file(&client->dev,
-				&sensor_dev_attr_in4_beep.dev_attr)))
-			goto exit_remove_files;
-	}
+	if (data->two_temps)
+		err = sysfs_create_group(&client->dev.kobj, &gl520_group_temp2);
+	else
+		err = sysfs_create_group(&client->dev.kobj, &gl520_group_in4);
 
+	if (err)
+		goto exit_remove_files;
 
 	data->hwmon_dev = hwmon_device_register(&client->dev);
 	if (IS_ERR(data->hwmon_dev)) {
@@ -757,7 +814,8 @@ static int gl520_probe(struct i2c_client *client,
 
 exit_remove_files:
 	sysfs_remove_group(&client->dev.kobj, &gl520_group);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
+	sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
+	sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
 exit_free:
 	kfree(data);
 exit:
@@ -809,15 +867,18 @@ static int gl520_remove(struct i2c_client *client)
 
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &gl520_group);
-	sysfs_remove_group(&client->dev.kobj, &gl520_group_opt);
+	sysfs_remove_group(&client->dev.kobj, &gl520_group_in4);
+	sysfs_remove_group(&client->dev.kobj, &gl520_group_temp2);
 
 	kfree(data);
 	return 0;
 }
 
 
-/* Registers 0x07 to 0x0c are word-sized, others are byte-sized
-   GL520 uses a high-byte first convention */
+/*
+ * Registers 0x07 to 0x0c are word-sized, others are byte-sized
+ * GL520 uses a high-byte first convention
+ */
 static int gl520_read_value(struct i2c_client *client, u8 reg)
 {
 	if ((reg >= 0x07) && (reg <= 0x0c))
@@ -849,7 +910,8 @@ static struct gl520_data *gl520_update_device(struct device *dev)
 
 		data->alarms = gl520_read_value(client, GL520_REG_ALARMS);
 		data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK);
-		data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f;
+		data->vid = gl520_read_value(client,
+					     GL520_REG_VID_INPUT) & 0x1f;
 
 		for (i = 0; i < 4; i++) {
 			data->in_input[i] = gl520_read_value(client,
@@ -910,23 +972,10 @@ static struct gl520_data *gl520_update_device(struct device *dev)
 	return data;
 }
 
-
-static int __init sensors_gl520sm_init(void)
-{
-	return i2c_add_driver(&gl520_driver);
-}
-
-static void __exit sensors_gl520sm_exit(void)
-{
-	i2c_del_driver(&gl520_driver);
-}
-
+module_i2c_driver(gl520_driver);
 
 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
 	"Kyösti Mälkki <kmalkki@cc.hut.fi>, "
 	"Maarten Deprez <maartendeprez@users.sourceforge.net>");
 MODULE_DESCRIPTION("GL520SM driver");
 MODULE_LICENSE("GPL");
-
-module_init(sensors_gl520sm_init);
-module_exit(sensors_gl520sm_exit);