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-rw-r--r--drivers/base/Kconfig3
-rw-r--r--drivers/base/base.h27
-rw-r--r--drivers/base/class.c153
-rw-r--r--drivers/base/core.c196
-rw-r--r--drivers/base/cpu.c10
-rw-r--r--drivers/base/memory.c12
-rw-r--r--drivers/base/node.c15
-rw-r--r--drivers/base/power/trace.c2
-rw-r--r--drivers/base/sys.c64
-rw-r--r--drivers/base/topology.c17
10 files changed, 338 insertions, 161 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index d47482fa1d21..6318f6b57360 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -27,8 +27,9 @@ config PREVENT_FIRMWARE_BUILD
27 If unsure say Y here. 27 If unsure say Y here.
28 28
29config FW_LOADER 29config FW_LOADER
30 tristate "Userspace firmware loading support" 30 tristate "Userspace firmware loading support" if EMBEDDED
31 depends on HOTPLUG 31 depends on HOTPLUG
32 default y
32 ---help--- 33 ---help---
33 This option is provided for the case where no in-kernel-tree modules 34 This option is provided for the case where no in-kernel-tree modules
34 require userspace firmware loading support, but a module built outside 35 require userspace firmware loading support, but a module built outside
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 2c9ae43e2219..31dc0cd84afa 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -36,6 +36,33 @@ struct driver_private {
36}; 36};
37#define to_driver(obj) container_of(obj, struct driver_private, kobj) 37#define to_driver(obj) container_of(obj, struct driver_private, kobj)
38 38
39
40/**
41 * struct class_private - structure to hold the private to the driver core portions of the class structure.
42 *
43 * @class_subsys - the struct kset that defines this class. This is the main kobject
44 * @class_devices - list of devices associated with this class
45 * @class_interfaces - list of class_interfaces associated with this class
46 * @class_dirs - "glue" directory for virtual devices associated with this class
47 * @class_mutex - mutex to protect the children, devices, and interfaces lists.
48 * @class - pointer back to the struct class that this structure is associated
49 * with.
50 *
51 * This structure is the one that is the actual kobject allowing struct
52 * class to be statically allocated safely. Nothing outside of the driver
53 * core should ever touch these fields.
54 */
55struct class_private {
56 struct kset class_subsys;
57 struct list_head class_devices;
58 struct list_head class_interfaces;
59 struct kset class_dirs;
60 struct mutex class_mutex;
61 struct class *class;
62};
63#define to_class(obj) \
64 container_of(obj, struct class_private, class_subsys.kobj)
65
39/* initialisation functions */ 66/* initialisation functions */
40extern int devices_init(void); 67extern int devices_init(void);
41extern int buses_init(void); 68extern int buses_init(void);
diff --git a/drivers/base/class.c b/drivers/base/class.c
index e085af0ff94f..839d27cecb36 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -18,20 +18,20 @@
18#include <linux/err.h> 18#include <linux/err.h>
19#include <linux/slab.h> 19#include <linux/slab.h>
20#include <linux/genhd.h> 20#include <linux/genhd.h>
21#include <linux/mutex.h>
21#include "base.h" 22#include "base.h"
22 23
23#define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr) 24#define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr)
24#define to_class(obj) container_of(obj, struct class, subsys.kobj)
25 25
26static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr, 26static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr,
27 char *buf) 27 char *buf)
28{ 28{
29 struct class_attribute *class_attr = to_class_attr(attr); 29 struct class_attribute *class_attr = to_class_attr(attr);
30 struct class *dc = to_class(kobj); 30 struct class_private *cp = to_class(kobj);
31 ssize_t ret = -EIO; 31 ssize_t ret = -EIO;
32 32
33 if (class_attr->show) 33 if (class_attr->show)
34 ret = class_attr->show(dc, buf); 34 ret = class_attr->show(cp->class, buf);
35 return ret; 35 return ret;
36} 36}
37 37
@@ -39,17 +39,18 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr,
39 const char *buf, size_t count) 39 const char *buf, size_t count)
40{ 40{
41 struct class_attribute *class_attr = to_class_attr(attr); 41 struct class_attribute *class_attr = to_class_attr(attr);
42 struct class *dc = to_class(kobj); 42 struct class_private *cp = to_class(kobj);
43 ssize_t ret = -EIO; 43 ssize_t ret = -EIO;
44 44
45 if (class_attr->store) 45 if (class_attr->store)
46 ret = class_attr->store(dc, buf, count); 46 ret = class_attr->store(cp->class, buf, count);
47 return ret; 47 return ret;
48} 48}
49 49
50static void class_release(struct kobject *kobj) 50static void class_release(struct kobject *kobj)
51{ 51{
52 struct class *class = to_class(kobj); 52 struct class_private *cp = to_class(kobj);
53 struct class *class = cp->class;
53 54
54 pr_debug("class '%s': release.\n", class->name); 55 pr_debug("class '%s': release.\n", class->name);
55 56
@@ -70,7 +71,7 @@ static struct kobj_type class_ktype = {
70 .release = class_release, 71 .release = class_release,
71}; 72};
72 73
73/* Hotplug events for classes go to the class_obj subsys */ 74/* Hotplug events for classes go to the class class_subsys */
74static struct kset *class_kset; 75static struct kset *class_kset;
75 76
76 77
@@ -78,7 +79,8 @@ int class_create_file(struct class *cls, const struct class_attribute *attr)
78{ 79{
79 int error; 80 int error;
80 if (cls) 81 if (cls)
81 error = sysfs_create_file(&cls->subsys.kobj, &attr->attr); 82 error = sysfs_create_file(&cls->p->class_subsys.kobj,
83 &attr->attr);
82 else 84 else
83 error = -EINVAL; 85 error = -EINVAL;
84 return error; 86 return error;
@@ -87,21 +89,20 @@ int class_create_file(struct class *cls, const struct class_attribute *attr)
87void class_remove_file(struct class *cls, const struct class_attribute *attr) 89void class_remove_file(struct class *cls, const struct class_attribute *attr)
88{ 90{
89 if (cls) 91 if (cls)
90 sysfs_remove_file(&cls->subsys.kobj, &attr->attr); 92 sysfs_remove_file(&cls->p->class_subsys.kobj, &attr->attr);
91} 93}
92 94
93static struct class *class_get(struct class *cls) 95static struct class *class_get(struct class *cls)
94{ 96{
95 if (cls) 97 if (cls)
96 return container_of(kset_get(&cls->subsys), 98 kset_get(&cls->p->class_subsys);
97 struct class, subsys); 99 return cls;
98 return NULL;
99} 100}
100 101
101static void class_put(struct class *cls) 102static void class_put(struct class *cls)
102{ 103{
103 if (cls) 104 if (cls)
104 kset_put(&cls->subsys); 105 kset_put(&cls->p->class_subsys);
105} 106}
106 107
107static int add_class_attrs(struct class *cls) 108static int add_class_attrs(struct class *cls)
@@ -134,42 +135,57 @@ static void remove_class_attrs(struct class *cls)
134 } 135 }
135} 136}
136 137
137int class_register(struct class *cls) 138int __class_register(struct class *cls, struct lock_class_key *key)
138{ 139{
140 struct class_private *cp;
139 int error; 141 int error;
140 142
141 pr_debug("device class '%s': registering\n", cls->name); 143 pr_debug("device class '%s': registering\n", cls->name);
142 144
143 INIT_LIST_HEAD(&cls->devices); 145 cp = kzalloc(sizeof(*cp), GFP_KERNEL);
144 INIT_LIST_HEAD(&cls->interfaces); 146 if (!cp)
145 kset_init(&cls->class_dirs); 147 return -ENOMEM;
146 init_MUTEX(&cls->sem); 148 INIT_LIST_HEAD(&cp->class_devices);
147 error = kobject_set_name(&cls->subsys.kobj, "%s", cls->name); 149 INIT_LIST_HEAD(&cp->class_interfaces);
148 if (error) 150 kset_init(&cp->class_dirs);
151 __mutex_init(&cp->class_mutex, "struct class mutex", key);
152 error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name);
153 if (error) {
154 kfree(cp);
149 return error; 155 return error;
156 }
157
158 /* set the default /sys/dev directory for devices of this class */
159 if (!cls->dev_kobj)
160 cls->dev_kobj = sysfs_dev_char_kobj;
150 161
151#if defined(CONFIG_SYSFS_DEPRECATED) && defined(CONFIG_BLOCK) 162#if defined(CONFIG_SYSFS_DEPRECATED) && defined(CONFIG_BLOCK)
152 /* let the block class directory show up in the root of sysfs */ 163 /* let the block class directory show up in the root of sysfs */
153 if (cls != &block_class) 164 if (cls != &block_class)
154 cls->subsys.kobj.kset = class_kset; 165 cp->class_subsys.kobj.kset = class_kset;
155#else 166#else
156 cls->subsys.kobj.kset = class_kset; 167 cp->class_subsys.kobj.kset = class_kset;
157#endif 168#endif
158 cls->subsys.kobj.ktype = &class_ktype; 169 cp->class_subsys.kobj.ktype = &class_ktype;
170 cp->class = cls;
171 cls->p = cp;
159 172
160 error = kset_register(&cls->subsys); 173 error = kset_register(&cp->class_subsys);
161 if (!error) { 174 if (error) {
162 error = add_class_attrs(class_get(cls)); 175 kfree(cp);
163 class_put(cls); 176 return error;
164 } 177 }
178 error = add_class_attrs(class_get(cls));
179 class_put(cls);
165 return error; 180 return error;
166} 181}
182EXPORT_SYMBOL_GPL(__class_register);
167 183
168void class_unregister(struct class *cls) 184void class_unregister(struct class *cls)
169{ 185{
170 pr_debug("device class '%s': unregistering\n", cls->name); 186 pr_debug("device class '%s': unregistering\n", cls->name);
171 remove_class_attrs(cls); 187 remove_class_attrs(cls);
172 kset_unregister(&cls->subsys); 188 kset_unregister(&cls->p->class_subsys);
173} 189}
174 190
175static void class_create_release(struct class *cls) 191static void class_create_release(struct class *cls)
@@ -189,7 +205,8 @@ static void class_create_release(struct class *cls)
189 * Note, the pointer created here is to be destroyed when finished by 205 * Note, the pointer created here is to be destroyed when finished by
190 * making a call to class_destroy(). 206 * making a call to class_destroy().
191 */ 207 */
192struct class *class_create(struct module *owner, const char *name) 208struct class *__class_create(struct module *owner, const char *name,
209 struct lock_class_key *key)
193{ 210{
194 struct class *cls; 211 struct class *cls;
195 int retval; 212 int retval;
@@ -204,7 +221,7 @@ struct class *class_create(struct module *owner, const char *name)
204 cls->owner = owner; 221 cls->owner = owner;
205 cls->class_release = class_create_release; 222 cls->class_release = class_create_release;
206 223
207 retval = class_register(cls); 224 retval = __class_register(cls, key);
208 if (retval) 225 if (retval)
209 goto error; 226 goto error;
210 227
@@ -214,6 +231,7 @@ error:
214 kfree(cls); 231 kfree(cls);
215 return ERR_PTR(retval); 232 return ERR_PTR(retval);
216} 233}
234EXPORT_SYMBOL_GPL(__class_create);
217 235
218/** 236/**
219 * class_destroy - destroys a struct class structure 237 * class_destroy - destroys a struct class structure
@@ -252,39 +270,44 @@ char *make_class_name(const char *name, struct kobject *kobj)
252/** 270/**
253 * class_for_each_device - device iterator 271 * class_for_each_device - device iterator
254 * @class: the class we're iterating 272 * @class: the class we're iterating
273 * @start: the device to start with in the list, if any.
255 * @data: data for the callback 274 * @data: data for the callback
256 * @fn: function to be called for each device 275 * @fn: function to be called for each device
257 * 276 *
258 * Iterate over @class's list of devices, and call @fn for each, 277 * Iterate over @class's list of devices, and call @fn for each,
259 * passing it @data. 278 * passing it @data. If @start is set, the list iteration will start
279 * there, otherwise if it is NULL, the iteration starts at the
280 * beginning of the list.
260 * 281 *
261 * We check the return of @fn each time. If it returns anything 282 * We check the return of @fn each time. If it returns anything
262 * other than 0, we break out and return that value. 283 * other than 0, we break out and return that value.
263 * 284 *
264 * Note, we hold class->sem in this function, so it can not be 285 * Note, we hold class->class_mutex in this function, so it can not be
265 * re-acquired in @fn, otherwise it will self-deadlocking. For 286 * re-acquired in @fn, otherwise it will self-deadlocking. For
266 * example, calls to add or remove class members would be verboten. 287 * example, calls to add or remove class members would be verboten.
267 */ 288 */
268int class_for_each_device(struct class *class, void *data, 289int class_for_each_device(struct class *class, struct device *start,
269 int (*fn)(struct device *, void *)) 290 void *data, int (*fn)(struct device *, void *))
270{ 291{
271 struct device *dev; 292 struct device *dev;
272 int error = 0; 293 int error = 0;
273 294
274 if (!class) 295 if (!class)
275 return -EINVAL; 296 return -EINVAL;
276 down(&class->sem); 297 mutex_lock(&class->p->class_mutex);
277 list_for_each_entry(dev, &class->devices, node) { 298 list_for_each_entry(dev, &class->p->class_devices, node) {
299 if (start) {
300 if (start == dev)
301 start = NULL;
302 continue;
303 }
278 dev = get_device(dev); 304 dev = get_device(dev);
279 if (dev) { 305 error = fn(dev, data);
280 error = fn(dev, data); 306 put_device(dev);
281 put_device(dev);
282 } else
283 error = -ENODEV;
284 if (error) 307 if (error)
285 break; 308 break;
286 } 309 }
287 up(&class->sem); 310 mutex_unlock(&class->p->class_mutex);
288 311
289 return error; 312 return error;
290} 313}
@@ -293,6 +316,7 @@ EXPORT_SYMBOL_GPL(class_for_each_device);
293/** 316/**
294 * class_find_device - device iterator for locating a particular device 317 * class_find_device - device iterator for locating a particular device
295 * @class: the class we're iterating 318 * @class: the class we're iterating
319 * @start: Device to begin with
296 * @data: data for the match function 320 * @data: data for the match function
297 * @match: function to check device 321 * @match: function to check device
298 * 322 *
@@ -306,12 +330,13 @@ EXPORT_SYMBOL_GPL(class_for_each_device);
306 * 330 *
307 * Note, you will need to drop the reference with put_device() after use. 331 * Note, you will need to drop the reference with put_device() after use.
308 * 332 *
309 * We hold class->sem in this function, so it can not be 333 * We hold class->class_mutex in this function, so it can not be
310 * re-acquired in @match, otherwise it will self-deadlocking. For 334 * re-acquired in @match, otherwise it will self-deadlocking. For
311 * example, calls to add or remove class members would be verboten. 335 * example, calls to add or remove class members would be verboten.
312 */ 336 */
313struct device *class_find_device(struct class *class, void *data, 337struct device *class_find_device(struct class *class, struct device *start,
314 int (*match)(struct device *, void *)) 338 void *data,
339 int (*match)(struct device *, void *))
315{ 340{
316 struct device *dev; 341 struct device *dev;
317 int found = 0; 342 int found = 0;
@@ -319,19 +344,21 @@ struct device *class_find_device(struct class *class, void *data,
319 if (!class) 344 if (!class)
320 return NULL; 345 return NULL;
321 346
322 down(&class->sem); 347 mutex_lock(&class->p->class_mutex);
323 list_for_each_entry(dev, &class->devices, node) { 348 list_for_each_entry(dev, &class->p->class_devices, node) {
349 if (start) {
350 if (start == dev)
351 start = NULL;
352 continue;
353 }
324 dev = get_device(dev); 354 dev = get_device(dev);
325 if (dev) { 355 if (match(dev, data)) {
326 if (match(dev, data)) { 356 found = 1;
327 found = 1;
328 break;
329 } else
330 put_device(dev);
331 } else
332 break; 357 break;
358 } else
359 put_device(dev);
333 } 360 }
334 up(&class->sem); 361 mutex_unlock(&class->p->class_mutex);
335 362
336 return found ? dev : NULL; 363 return found ? dev : NULL;
337} 364}
@@ -349,13 +376,13 @@ int class_interface_register(struct class_interface *class_intf)
349 if (!parent) 376 if (!parent)
350 return -EINVAL; 377 return -EINVAL;
351 378
352 down(&parent->sem); 379 mutex_lock(&parent->p->class_mutex);
353 list_add_tail(&class_intf->node, &parent->interfaces); 380 list_add_tail(&class_intf->node, &parent->p->class_interfaces);
354 if (class_intf->add_dev) { 381 if (class_intf->add_dev) {
355 list_for_each_entry(dev, &parent->devices, node) 382 list_for_each_entry(dev, &parent->p->class_devices, node)
356 class_intf->add_dev(dev, class_intf); 383 class_intf->add_dev(dev, class_intf);
357 } 384 }
358 up(&parent->sem); 385 mutex_unlock(&parent->p->class_mutex);
359 386
360 return 0; 387 return 0;
361} 388}
@@ -368,13 +395,13 @@ void class_interface_unregister(struct class_interface *class_intf)
368 if (!parent) 395 if (!parent)
369 return; 396 return;
370 397
371 down(&parent->sem); 398 mutex_lock(&parent->p->class_mutex);
372 list_del_init(&class_intf->node); 399 list_del_init(&class_intf->node);
373 if (class_intf->remove_dev) { 400 if (class_intf->remove_dev) {
374 list_for_each_entry(dev, &parent->devices, node) 401 list_for_each_entry(dev, &parent->p->class_devices, node)
375 class_intf->remove_dev(dev, class_intf); 402 class_intf->remove_dev(dev, class_intf);
376 } 403 }
377 up(&parent->sem); 404 mutex_unlock(&parent->p->class_mutex);
378 405
379 class_put(parent); 406 class_put(parent);
380} 407}
@@ -389,9 +416,7 @@ int __init classes_init(void)
389 416
390EXPORT_SYMBOL_GPL(class_create_file); 417EXPORT_SYMBOL_GPL(class_create_file);
391EXPORT_SYMBOL_GPL(class_remove_file); 418EXPORT_SYMBOL_GPL(class_remove_file);
392EXPORT_SYMBOL_GPL(class_register);
393EXPORT_SYMBOL_GPL(class_unregister); 419EXPORT_SYMBOL_GPL(class_unregister);
394EXPORT_SYMBOL_GPL(class_create);
395EXPORT_SYMBOL_GPL(class_destroy); 420EXPORT_SYMBOL_GPL(class_destroy);
396 421
397EXPORT_SYMBOL_GPL(class_interface_register); 422EXPORT_SYMBOL_GPL(class_interface_register);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index ee0a51a3a41d..7d5c63c81a59 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -21,12 +21,16 @@
21#include <linux/genhd.h> 21#include <linux/genhd.h>
22#include <linux/kallsyms.h> 22#include <linux/kallsyms.h>
23#include <linux/semaphore.h> 23#include <linux/semaphore.h>
24#include <linux/mutex.h>
24 25
25#include "base.h" 26#include "base.h"
26#include "power/power.h" 27#include "power/power.h"
27 28
28int (*platform_notify)(struct device *dev) = NULL; 29int (*platform_notify)(struct device *dev) = NULL;
29int (*platform_notify_remove)(struct device *dev) = NULL; 30int (*platform_notify_remove)(struct device *dev) = NULL;
31static struct kobject *dev_kobj;
32struct kobject *sysfs_dev_char_kobj;
33struct kobject *sysfs_dev_block_kobj;
30 34
31#ifdef CONFIG_BLOCK 35#ifdef CONFIG_BLOCK
32static inline int device_is_not_partition(struct device *dev) 36static inline int device_is_not_partition(struct device *dev)
@@ -548,7 +552,7 @@ static struct kobject *get_device_parent(struct device *dev,
548{ 552{
549 /* class devices without a parent live in /sys/class/<classname>/ */ 553 /* class devices without a parent live in /sys/class/<classname>/ */
550 if (dev->class && (!parent || parent->class != dev->class)) 554 if (dev->class && (!parent || parent->class != dev->class))
551 return &dev->class->subsys.kobj; 555 return &dev->class->p->class_subsys.kobj;
552 /* all other devices keep their parent */ 556 /* all other devices keep their parent */
553 else if (parent) 557 else if (parent)
554 return &parent->kobj; 558 return &parent->kobj;
@@ -594,13 +598,13 @@ static struct kobject *get_device_parent(struct device *dev,
594 parent_kobj = &parent->kobj; 598 parent_kobj = &parent->kobj;
595 599
596 /* find our class-directory at the parent and reference it */ 600 /* find our class-directory at the parent and reference it */
597 spin_lock(&dev->class->class_dirs.list_lock); 601 spin_lock(&dev->class->p->class_dirs.list_lock);
598 list_for_each_entry(k, &dev->class->class_dirs.list, entry) 602 list_for_each_entry(k, &dev->class->p->class_dirs.list, entry)
599 if (k->parent == parent_kobj) { 603 if (k->parent == parent_kobj) {
600 kobj = kobject_get(k); 604 kobj = kobject_get(k);
601 break; 605 break;
602 } 606 }
603 spin_unlock(&dev->class->class_dirs.list_lock); 607 spin_unlock(&dev->class->p->class_dirs.list_lock);
604 if (kobj) 608 if (kobj)
605 return kobj; 609 return kobj;
606 610
@@ -608,7 +612,7 @@ static struct kobject *get_device_parent(struct device *dev,
608 k = kobject_create(); 612 k = kobject_create();
609 if (!k) 613 if (!k)
610 return NULL; 614 return NULL;
611 k->kset = &dev->class->class_dirs; 615 k->kset = &dev->class->p->class_dirs;
612 retval = kobject_add(k, parent_kobj, "%s", dev->class->name); 616 retval = kobject_add(k, parent_kobj, "%s", dev->class->name);
613 if (retval < 0) { 617 if (retval < 0) {
614 kobject_put(k); 618 kobject_put(k);
@@ -627,7 +631,7 @@ static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
627{ 631{
628 /* see if we live in a "glue" directory */ 632 /* see if we live in a "glue" directory */
629 if (!glue_dir || !dev->class || 633 if (!glue_dir || !dev->class ||
630 glue_dir->kset != &dev->class->class_dirs) 634 glue_dir->kset != &dev->class->p->class_dirs)
631 return; 635 return;
632 636
633 kobject_put(glue_dir); 637 kobject_put(glue_dir);
@@ -654,17 +658,18 @@ static int device_add_class_symlinks(struct device *dev)
654 if (!dev->class) 658 if (!dev->class)
655 return 0; 659 return 0;
656 660
657 error = sysfs_create_link(&dev->kobj, &dev->class->subsys.kobj, 661 error = sysfs_create_link(&dev->kobj,
662 &dev->class->p->class_subsys.kobj,
658 "subsystem"); 663 "subsystem");
659 if (error) 664 if (error)
660 goto out; 665 goto out;
661 666
662#ifdef CONFIG_SYSFS_DEPRECATED 667#ifdef CONFIG_SYSFS_DEPRECATED
663 /* stacked class devices need a symlink in the class directory */ 668 /* stacked class devices need a symlink in the class directory */
664 if (dev->kobj.parent != &dev->class->subsys.kobj && 669 if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
665 device_is_not_partition(dev)) { 670 device_is_not_partition(dev)) {
666 error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj, 671 error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
667 dev->bus_id); 672 &dev->kobj, dev->bus_id);
668 if (error) 673 if (error)
669 goto out_subsys; 674 goto out_subsys;
670 } 675 }
@@ -701,13 +706,14 @@ out_device:
701 if (dev->parent && device_is_not_partition(dev)) 706 if (dev->parent && device_is_not_partition(dev))
702 sysfs_remove_link(&dev->kobj, "device"); 707 sysfs_remove_link(&dev->kobj, "device");
703out_busid: 708out_busid:
704 if (dev->kobj.parent != &dev->class->subsys.kobj && 709 if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
705 device_is_not_partition(dev)) 710 device_is_not_partition(dev))
706 sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); 711 sysfs_remove_link(&dev->class->p->class_subsys.kobj,
712 dev->bus_id);
707#else 713#else
708 /* link in the class directory pointing to the device */ 714 /* link in the class directory pointing to the device */
709 error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj, 715 error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
710 dev->bus_id); 716 &dev->kobj, dev->bus_id);
711 if (error) 717 if (error)
712 goto out_subsys; 718 goto out_subsys;
713 719
@@ -720,7 +726,7 @@ out_busid:
720 return 0; 726 return 0;
721 727
722out_busid: 728out_busid:
723 sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); 729 sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
724#endif 730#endif
725 731
726out_subsys: 732out_subsys:
@@ -746,14 +752,15 @@ static void device_remove_class_symlinks(struct device *dev)
746 sysfs_remove_link(&dev->kobj, "device"); 752 sysfs_remove_link(&dev->kobj, "device");
747 } 753 }
748 754
749 if (dev->kobj.parent != &dev->class->subsys.kobj && 755 if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
750 device_is_not_partition(dev)) 756 device_is_not_partition(dev))
751 sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); 757 sysfs_remove_link(&dev->class->p->class_subsys.kobj,
758 dev->bus_id);
752#else 759#else
753 if (dev->parent && device_is_not_partition(dev)) 760 if (dev->parent && device_is_not_partition(dev))
754 sysfs_remove_link(&dev->kobj, "device"); 761 sysfs_remove_link(&dev->kobj, "device");
755 762
756 sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); 763 sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
757#endif 764#endif
758 765
759 sysfs_remove_link(&dev->kobj, "subsystem"); 766 sysfs_remove_link(&dev->kobj, "subsystem");
@@ -776,6 +783,54 @@ int dev_set_name(struct device *dev, const char *fmt, ...)
776EXPORT_SYMBOL_GPL(dev_set_name); 783EXPORT_SYMBOL_GPL(dev_set_name);
777 784
778/** 785/**
786 * device_to_dev_kobj - select a /sys/dev/ directory for the device
787 * @dev: device
788 *
789 * By default we select char/ for new entries. Setting class->dev_obj
790 * to NULL prevents an entry from being created. class->dev_kobj must
791 * be set (or cleared) before any devices are registered to the class
792 * otherwise device_create_sys_dev_entry() and
793 * device_remove_sys_dev_entry() will disagree about the the presence
794 * of the link.
795 */
796static struct kobject *device_to_dev_kobj(struct device *dev)
797{
798 struct kobject *kobj;
799
800 if (dev->class)
801 kobj = dev->class->dev_kobj;
802 else
803 kobj = sysfs_dev_char_kobj;
804
805 return kobj;
806}
807
808static int device_create_sys_dev_entry(struct device *dev)
809{
810 struct kobject *kobj = device_to_dev_kobj(dev);
811 int error = 0;
812 char devt_str[15];
813
814 if (kobj) {
815 format_dev_t(devt_str, dev->devt);
816 error = sysfs_create_link(kobj, &dev->kobj, devt_str);
817 }
818
819 return error;
820}
821
822static void device_remove_sys_dev_entry(struct device *dev)
823{
824 struct kobject *kobj = device_to_dev_kobj(dev);
825 char devt_str[15];
826
827 if (kobj) {
828 format_dev_t(devt_str, dev->devt);
829 sysfs_remove_link(kobj, devt_str);
830 }
831}
832
833/**
779 * device_add - add device to device hierarchy. 834 * device_add - add device to device hierarchy.
780 * @dev: device. 835 * @dev: device.
781 * 836 *
@@ -829,6 +884,10 @@ int device_add(struct device *dev)
829 error = device_create_file(dev, &devt_attr); 884 error = device_create_file(dev, &devt_attr);
830 if (error) 885 if (error)
831 goto ueventattrError; 886 goto ueventattrError;
887
888 error = device_create_sys_dev_entry(dev);
889 if (error)
890 goto devtattrError;
832 } 891 }
833 892
834 error = device_add_class_symlinks(dev); 893 error = device_add_class_symlinks(dev);
@@ -849,15 +908,16 @@ int device_add(struct device *dev)
849 klist_add_tail(&dev->knode_parent, &parent->klist_children); 908 klist_add_tail(&dev->knode_parent, &parent->klist_children);
850 909
851 if (dev->class) { 910 if (dev->class) {
852 down(&dev->class->sem); 911 mutex_lock(&dev->class->p->class_mutex);
853 /* tie the class to the device */ 912 /* tie the class to the device */
854 list_add_tail(&dev->node, &dev->class->devices); 913 list_add_tail(&dev->node, &dev->class->p->class_devices);
855 914
856 /* notify any interfaces that the device is here */ 915 /* notify any interfaces that the device is here */
857 list_for_each_entry(class_intf, &dev->class->interfaces, node) 916 list_for_each_entry(class_intf,
917 &dev->class->p->class_interfaces, node)
858 if (class_intf->add_dev) 918 if (class_intf->add_dev)
859 class_intf->add_dev(dev, class_intf); 919 class_intf->add_dev(dev, class_intf);
860 up(&dev->class->sem); 920 mutex_unlock(&dev->class->p->class_mutex);
861 } 921 }
862 Done: 922 Done:
863 put_device(dev); 923 put_device(dev);
@@ -873,6 +933,9 @@ int device_add(struct device *dev)
873 device_remove_class_symlinks(dev); 933 device_remove_class_symlinks(dev);
874 SymlinkError: 934 SymlinkError:
875 if (MAJOR(dev->devt)) 935 if (MAJOR(dev->devt))
936 device_remove_sys_dev_entry(dev);
937 devtattrError:
938 if (MAJOR(dev->devt))
876 device_remove_file(dev, &devt_attr); 939 device_remove_file(dev, &devt_attr);
877 ueventattrError: 940 ueventattrError:
878 device_remove_file(dev, &uevent_attr); 941 device_remove_file(dev, &uevent_attr);
@@ -948,19 +1011,22 @@ void device_del(struct device *dev)
948 device_pm_remove(dev); 1011 device_pm_remove(dev);
949 if (parent) 1012 if (parent)
950 klist_del(&dev->knode_parent); 1013 klist_del(&dev->knode_parent);
951 if (MAJOR(dev->devt)) 1014 if (MAJOR(dev->devt)) {
1015 device_remove_sys_dev_entry(dev);
952 device_remove_file(dev, &devt_attr); 1016 device_remove_file(dev, &devt_attr);
1017 }
953 if (dev->class) { 1018 if (dev->class) {
954 device_remove_class_symlinks(dev); 1019 device_remove_class_symlinks(dev);
955 1020
956 down(&dev->class->sem); 1021 mutex_lock(&dev->class->p->class_mutex);
957 /* notify any interfaces that the device is now gone */ 1022 /* notify any interfaces that the device is now gone */
958 list_for_each_entry(class_intf, &dev->class->interfaces, node) 1023 list_for_each_entry(class_intf,
1024 &dev->class->p->class_interfaces, node)
959 if (class_intf->remove_dev) 1025 if (class_intf->remove_dev)
960 class_intf->remove_dev(dev, class_intf); 1026 class_intf->remove_dev(dev, class_intf);
961 /* remove the device from the class list */ 1027 /* remove the device from the class list */
962 list_del_init(&dev->node); 1028 list_del_init(&dev->node);
963 up(&dev->class->sem); 1029 mutex_unlock(&dev->class->p->class_mutex);
964 } 1030 }
965 device_remove_file(dev, &uevent_attr); 1031 device_remove_file(dev, &uevent_attr);
966 device_remove_attrs(dev); 1032 device_remove_attrs(dev);
@@ -1074,7 +1140,25 @@ int __init devices_init(void)
1074 devices_kset = kset_create_and_add("devices", &device_uevent_ops, NULL); 1140 devices_kset = kset_create_and_add("devices", &device_uevent_ops, NULL);
1075 if (!devices_kset) 1141 if (!devices_kset)
1076 return -ENOMEM; 1142 return -ENOMEM;
1143 dev_kobj = kobject_create_and_add("dev", NULL);
1144 if (!dev_kobj)
1145 goto dev_kobj_err;
1146 sysfs_dev_block_kobj = kobject_create_and_add("block", dev_kobj);
1147 if (!sysfs_dev_block_kobj)
1148 goto block_kobj_err;
1149 sysfs_dev_char_kobj = kobject_create_and_add("char", dev_kobj);
1150 if (!sysfs_dev_char_kobj)
1151 goto char_kobj_err;
1152
1077 return 0; 1153 return 0;
1154
1155 char_kobj_err:
1156 kobject_put(sysfs_dev_block_kobj);
1157 block_kobj_err:
1158 kobject_put(dev_kobj);
1159 dev_kobj_err:
1160 kset_unregister(devices_kset);
1161 return -ENOMEM;
1078} 1162}
1079 1163
1080EXPORT_SYMBOL_GPL(device_for_each_child); 1164EXPORT_SYMBOL_GPL(device_for_each_child);
@@ -1158,48 +1242,11 @@ error:
1158EXPORT_SYMBOL_GPL(device_create_vargs); 1242EXPORT_SYMBOL_GPL(device_create_vargs);
1159 1243
1160/** 1244/**
1161 * device_create_drvdata - creates a device and registers it with sysfs
1162 * @class: pointer to the struct class that this device should be registered to
1163 * @parent: pointer to the parent struct device of this new device, if any
1164 * @devt: the dev_t for the char device to be added
1165 * @drvdata: the data to be added to the device for callbacks
1166 * @fmt: string for the device's name
1167 *
1168 * This function can be used by char device classes. A struct device
1169 * will be created in sysfs, registered to the specified class.
1170 *
1171 * A "dev" file will be created, showing the dev_t for the device, if
1172 * the dev_t is not 0,0.
1173 * If a pointer to a parent struct device is passed in, the newly created
1174 * struct device will be a child of that device in sysfs.
1175 * The pointer to the struct device will be returned from the call.
1176 * Any further sysfs files that might be required can be created using this
1177 * pointer.
1178 *
1179 * Note: the struct class passed to this function must have previously
1180 * been created with a call to class_create().
1181 */
1182struct device *device_create_drvdata(struct class *class,
1183 struct device *parent,
1184 dev_t devt,
1185 void *drvdata,
1186 const char *fmt, ...)
1187{
1188 va_list vargs;
1189 struct device *dev;
1190
1191 va_start(vargs, fmt);
1192 dev = device_create_vargs(class, parent, devt, drvdata, fmt, vargs);
1193 va_end(vargs);
1194 return dev;
1195}
1196EXPORT_SYMBOL_GPL(device_create_drvdata);
1197
1198/**
1199 * device_create - creates a device and registers it with sysfs 1245 * device_create - creates a device and registers it with sysfs
1200 * @class: pointer to the struct class that this device should be registered to 1246 * @class: pointer to the struct class that this device should be registered to
1201 * @parent: pointer to the parent struct device of this new device, if any 1247 * @parent: pointer to the parent struct device of this new device, if any
1202 * @devt: the dev_t for the char device to be added 1248 * @devt: the dev_t for the char device to be added
1249 * @drvdata: the data to be added to the device for callbacks
1203 * @fmt: string for the device's name 1250 * @fmt: string for the device's name
1204 * 1251 *
1205 * This function can be used by char device classes. A struct device 1252 * This function can be used by char device classes. A struct device
@@ -1217,13 +1264,13 @@ EXPORT_SYMBOL_GPL(device_create_drvdata);
1217 * been created with a call to class_create(). 1264 * been created with a call to class_create().
1218 */ 1265 */
1219struct device *device_create(struct class *class, struct device *parent, 1266struct device *device_create(struct class *class, struct device *parent,
1220 dev_t devt, const char *fmt, ...) 1267 dev_t devt, void *drvdata, const char *fmt, ...)
1221{ 1268{
1222 va_list vargs; 1269 va_list vargs;
1223 struct device *dev; 1270 struct device *dev;
1224 1271
1225 va_start(vargs, fmt); 1272 va_start(vargs, fmt);
1226 dev = device_create_vargs(class, parent, devt, NULL, fmt, vargs); 1273 dev = device_create_vargs(class, parent, devt, drvdata, fmt, vargs);
1227 va_end(vargs); 1274 va_end(vargs);
1228 return dev; 1275 return dev;
1229} 1276}
@@ -1248,7 +1295,7 @@ void device_destroy(struct class *class, dev_t devt)
1248{ 1295{
1249 struct device *dev; 1296 struct device *dev;
1250 1297
1251 dev = class_find_device(class, &devt, __match_devt); 1298 dev = class_find_device(class, NULL, &devt, __match_devt);
1252 if (dev) { 1299 if (dev) {
1253 put_device(dev); 1300 put_device(dev);
1254 device_unregister(dev); 1301 device_unregister(dev);
@@ -1298,8 +1345,9 @@ int device_rename(struct device *dev, char *new_name)
1298 if (old_class_name) { 1345 if (old_class_name) {
1299 new_class_name = make_class_name(dev->class->name, &dev->kobj); 1346 new_class_name = make_class_name(dev->class->name, &dev->kobj);
1300 if (new_class_name) { 1347 if (new_class_name) {
1301 error = sysfs_create_link(&dev->parent->kobj, 1348 error = sysfs_create_link_nowarn(&dev->parent->kobj,
1302 &dev->kobj, new_class_name); 1349 &dev->kobj,
1350 new_class_name);
1303 if (error) 1351 if (error)
1304 goto out; 1352 goto out;
1305 sysfs_remove_link(&dev->parent->kobj, old_class_name); 1353 sysfs_remove_link(&dev->parent->kobj, old_class_name);
@@ -1307,11 +1355,12 @@ int device_rename(struct device *dev, char *new_name)
1307 } 1355 }
1308#else 1356#else
1309 if (dev->class) { 1357 if (dev->class) {
1310 error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj, 1358 error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj,
1311 dev->bus_id); 1359 &dev->kobj, dev->bus_id);
1312 if (error) 1360 if (error)
1313 goto out; 1361 goto out;
1314 sysfs_remove_link(&dev->class->subsys.kobj, old_device_name); 1362 sysfs_remove_link(&dev->class->p->class_subsys.kobj,
1363 old_device_name);
1315 } 1364 }
1316#endif 1365#endif
1317 1366
@@ -1447,4 +1496,7 @@ void device_shutdown(void)
1447 dev->driver->shutdown(dev); 1496 dev->driver->shutdown(dev);
1448 } 1497 }
1449 } 1498 }
1499 kobject_put(sysfs_dev_char_kobj);
1500 kobject_put(sysfs_dev_block_kobj);
1501 kobject_put(dev_kobj);
1450} 1502}
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index e38dfed41d80..20537d507909 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -21,15 +21,16 @@ EXPORT_SYMBOL(cpu_sysdev_class);
21static DEFINE_PER_CPU(struct sys_device *, cpu_sys_devices); 21static DEFINE_PER_CPU(struct sys_device *, cpu_sys_devices);
22 22
23#ifdef CONFIG_HOTPLUG_CPU 23#ifdef CONFIG_HOTPLUG_CPU
24static ssize_t show_online(struct sys_device *dev, char *buf) 24static ssize_t show_online(struct sys_device *dev, struct sysdev_attribute *attr,
25 char *buf)
25{ 26{
26 struct cpu *cpu = container_of(dev, struct cpu, sysdev); 27 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
27 28
28 return sprintf(buf, "%u\n", !!cpu_online(cpu->sysdev.id)); 29 return sprintf(buf, "%u\n", !!cpu_online(cpu->sysdev.id));
29} 30}
30 31
31static ssize_t __ref store_online(struct sys_device *dev, const char *buf, 32static ssize_t __ref store_online(struct sys_device *dev, struct sysdev_attribute *attr,
32 size_t count) 33 const char *buf, size_t count)
33{ 34{
34 struct cpu *cpu = container_of(dev, struct cpu, sysdev); 35 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
35 ssize_t ret; 36 ssize_t ret;
@@ -80,7 +81,8 @@ static inline void register_cpu_control(struct cpu *cpu)
80#ifdef CONFIG_KEXEC 81#ifdef CONFIG_KEXEC
81#include <linux/kexec.h> 82#include <linux/kexec.h>
82 83
83static ssize_t show_crash_notes(struct sys_device *dev, char *buf) 84static ssize_t show_crash_notes(struct sys_device *dev, struct sysdev_attribute *attr,
85 char *buf)
84{ 86{
85 struct cpu *cpu = container_of(dev, struct cpu, sysdev); 87 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
86 ssize_t rc; 88 ssize_t rc;
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 937e8258981d..4d4e0e7b6e92 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -92,7 +92,8 @@ unregister_memory(struct memory_block *memory, struct mem_section *section)
92 * uses. 92 * uses.
93 */ 93 */
94 94
95static ssize_t show_mem_phys_index(struct sys_device *dev, char *buf) 95static ssize_t show_mem_phys_index(struct sys_device *dev,
96 struct sysdev_attribute *attr, char *buf)
96{ 97{
97 struct memory_block *mem = 98 struct memory_block *mem =
98 container_of(dev, struct memory_block, sysdev); 99 container_of(dev, struct memory_block, sysdev);
@@ -102,7 +103,8 @@ static ssize_t show_mem_phys_index(struct sys_device *dev, char *buf)
102/* 103/*
103 * online, offline, going offline, etc. 104 * online, offline, going offline, etc.
104 */ 105 */
105static ssize_t show_mem_state(struct sys_device *dev, char *buf) 106static ssize_t show_mem_state(struct sys_device *dev,
107 struct sysdev_attribute *attr, char *buf)
106{ 108{
107 struct memory_block *mem = 109 struct memory_block *mem =
108 container_of(dev, struct memory_block, sysdev); 110 container_of(dev, struct memory_block, sysdev);
@@ -217,7 +219,8 @@ out:
217} 219}
218 220
219static ssize_t 221static ssize_t
220store_mem_state(struct sys_device *dev, const char *buf, size_t count) 222store_mem_state(struct sys_device *dev,
223 struct sysdev_attribute *attr, const char *buf, size_t count)
221{ 224{
222 struct memory_block *mem; 225 struct memory_block *mem;
223 unsigned int phys_section_nr; 226 unsigned int phys_section_nr;
@@ -248,7 +251,8 @@ out:
248 * s.t. if I offline all of these sections I can then 251 * s.t. if I offline all of these sections I can then
249 * remove the physical device? 252 * remove the physical device?
250 */ 253 */
251static ssize_t show_phys_device(struct sys_device *dev, char *buf) 254static ssize_t show_phys_device(struct sys_device *dev,
255 struct sysdev_attribute *attr, char *buf)
252{ 256{
253 struct memory_block *mem = 257 struct memory_block *mem =
254 container_of(dev, struct memory_block, sysdev); 258 container_of(dev, struct memory_block, sysdev);
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 0f867a083338..5116b78c6325 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -36,11 +36,13 @@ static ssize_t node_read_cpumap(struct sys_device *dev, int type, char *buf)
36 return len; 36 return len;
37} 37}
38 38
39static inline ssize_t node_read_cpumask(struct sys_device *dev, char *buf) 39static inline ssize_t node_read_cpumask(struct sys_device *dev,
40 struct sysdev_attribute *attr, char *buf)
40{ 41{
41 return node_read_cpumap(dev, 0, buf); 42 return node_read_cpumap(dev, 0, buf);
42} 43}
43static inline ssize_t node_read_cpulist(struct sys_device *dev, char *buf) 44static inline ssize_t node_read_cpulist(struct sys_device *dev,
45 struct sysdev_attribute *attr, char *buf)
44{ 46{
45 return node_read_cpumap(dev, 1, buf); 47 return node_read_cpumap(dev, 1, buf);
46} 48}
@@ -49,7 +51,8 @@ static SYSDEV_ATTR(cpumap, S_IRUGO, node_read_cpumask, NULL);
49static SYSDEV_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL); 51static SYSDEV_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL);
50 52
51#define K(x) ((x) << (PAGE_SHIFT - 10)) 53#define K(x) ((x) << (PAGE_SHIFT - 10))
52static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) 54static ssize_t node_read_meminfo(struct sys_device * dev,
55 struct sysdev_attribute *attr, char * buf)
53{ 56{
54 int n; 57 int n;
55 int nid = dev->id; 58 int nid = dev->id;
@@ -112,7 +115,8 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
112#undef K 115#undef K
113static SYSDEV_ATTR(meminfo, S_IRUGO, node_read_meminfo, NULL); 116static SYSDEV_ATTR(meminfo, S_IRUGO, node_read_meminfo, NULL);
114 117
115static ssize_t node_read_numastat(struct sys_device * dev, char * buf) 118static ssize_t node_read_numastat(struct sys_device * dev,
119 struct sysdev_attribute *attr, char * buf)
116{ 120{
117 return sprintf(buf, 121 return sprintf(buf,
118 "numa_hit %lu\n" 122 "numa_hit %lu\n"
@@ -130,7 +134,8 @@ static ssize_t node_read_numastat(struct sys_device * dev, char * buf)
130} 134}
131static SYSDEV_ATTR(numastat, S_IRUGO, node_read_numastat, NULL); 135static SYSDEV_ATTR(numastat, S_IRUGO, node_read_numastat, NULL);
132 136
133static ssize_t node_read_distance(struct sys_device * dev, char * buf) 137static ssize_t node_read_distance(struct sys_device * dev,
138 struct sysdev_attribute *attr, char * buf)
134{ 139{
135 int nid = dev->id; 140 int nid = dev->id;
136 int len = 0; 141 int len = 0;
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 9b1b20b59e0a..2aa6e8fc4def 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -194,7 +194,7 @@ static int show_dev_hash(unsigned int value)
194 struct device * dev = to_device(entry); 194 struct device * dev = to_device(entry);
195 unsigned int hash = hash_string(DEVSEED, dev->bus_id, DEVHASH); 195 unsigned int hash = hash_string(DEVSEED, dev->bus_id, DEVHASH);
196 if (hash == value) { 196 if (hash == value) {
197 printk(" hash matches device %s\n", dev->bus_id); 197 dev_info(dev, "hash matches\n");
198 match++; 198 match++;
199 } 199 }
200 entry = entry->prev; 200 entry = entry->prev;
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 358bb0be3c08..40fc14f03540 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -36,7 +36,7 @@ sysdev_show(struct kobject * kobj, struct attribute * attr, char * buffer)
36 struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr); 36 struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr);
37 37
38 if (sysdev_attr->show) 38 if (sysdev_attr->show)
39 return sysdev_attr->show(sysdev, buffer); 39 return sysdev_attr->show(sysdev, sysdev_attr, buffer);
40 return -EIO; 40 return -EIO;
41} 41}
42 42
@@ -49,7 +49,7 @@ sysdev_store(struct kobject * kobj, struct attribute * attr,
49 struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr); 49 struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr);
50 50
51 if (sysdev_attr->store) 51 if (sysdev_attr->store)
52 return sysdev_attr->store(sysdev, buffer, count); 52 return sysdev_attr->store(sysdev, sysdev_attr, buffer, count);
53 return -EIO; 53 return -EIO;
54} 54}
55 55
@@ -130,8 +130,8 @@ static struct kset *system_kset;
130 130
131int sysdev_class_register(struct sysdev_class * cls) 131int sysdev_class_register(struct sysdev_class * cls)
132{ 132{
133 pr_debug("Registering sysdev class '%s'\n", 133 pr_debug("Registering sysdev class '%s'\n", cls->name);
134 kobject_name(&cls->kset.kobj)); 134
135 INIT_LIST_HEAD(&cls->drivers); 135 INIT_LIST_HEAD(&cls->drivers);
136 memset(&cls->kset.kobj, 0x00, sizeof(struct kobject)); 136 memset(&cls->kset.kobj, 0x00, sizeof(struct kobject));
137 cls->kset.kobj.parent = &system_kset->kobj; 137 cls->kset.kobj.parent = &system_kset->kobj;
@@ -241,7 +241,8 @@ int sysdev_register(struct sys_device * sysdev)
241 if (!cls) 241 if (!cls)
242 return -EINVAL; 242 return -EINVAL;
243 243
244 pr_debug("Registering sys device '%s'\n", kobject_name(&sysdev->kobj)); 244 pr_debug("Registering sys device of class '%s'\n",
245 kobject_name(&cls->kset.kobj));
245 246
246 /* initialize the kobject to 0, in case it had previously been used */ 247 /* initialize the kobject to 0, in case it had previously been used */
247 memset(&sysdev->kobj, 0x00, sizeof(struct kobject)); 248 memset(&sysdev->kobj, 0x00, sizeof(struct kobject));
@@ -257,6 +258,9 @@ int sysdev_register(struct sys_device * sysdev)
257 if (!error) { 258 if (!error) {
258 struct sysdev_driver * drv; 259 struct sysdev_driver * drv;
259 260
261 pr_debug("Registering sys device '%s'\n",
262 kobject_name(&sysdev->kobj));
263
260 mutex_lock(&sysdev_drivers_lock); 264 mutex_lock(&sysdev_drivers_lock);
261 /* Generic notification is implicit, because it's that 265 /* Generic notification is implicit, because it's that
262 * code that should have called us. 266 * code that should have called us.
@@ -269,6 +273,7 @@ int sysdev_register(struct sys_device * sysdev)
269 } 273 }
270 mutex_unlock(&sysdev_drivers_lock); 274 mutex_unlock(&sysdev_drivers_lock);
271 } 275 }
276
272 kobject_uevent(&sysdev->kobj, KOBJ_ADD); 277 kobject_uevent(&sysdev->kobj, KOBJ_ADD);
273 return error; 278 return error;
274} 279}
@@ -474,3 +479,52 @@ int __init system_bus_init(void)
474 479
475EXPORT_SYMBOL_GPL(sysdev_register); 480EXPORT_SYMBOL_GPL(sysdev_register);
476EXPORT_SYMBOL_GPL(sysdev_unregister); 481EXPORT_SYMBOL_GPL(sysdev_unregister);
482
483#define to_ext_attr(x) container_of(x, struct sysdev_ext_attribute, attr)
484
485ssize_t sysdev_store_ulong(struct sys_device *sysdev,
486 struct sysdev_attribute *attr,
487 const char *buf, size_t size)
488{
489 struct sysdev_ext_attribute *ea = to_ext_attr(attr);
490 char *end;
491 unsigned long new = simple_strtoul(buf, &end, 0);
492 if (end == buf)
493 return -EINVAL;
494 *(unsigned long *)(ea->var) = new;
495 return end - buf;
496}
497EXPORT_SYMBOL_GPL(sysdev_store_ulong);
498
499ssize_t sysdev_show_ulong(struct sys_device *sysdev,
500 struct sysdev_attribute *attr,
501 char *buf)
502{
503 struct sysdev_ext_attribute *ea = to_ext_attr(attr);
504 return snprintf(buf, PAGE_SIZE, "%lx\n", *(unsigned long *)(ea->var));
505}
506EXPORT_SYMBOL_GPL(sysdev_show_ulong);
507
508ssize_t sysdev_store_int(struct sys_device *sysdev,
509 struct sysdev_attribute *attr,
510 const char *buf, size_t size)
511{
512 struct sysdev_ext_attribute *ea = to_ext_attr(attr);
513 char *end;
514 long new = simple_strtol(buf, &end, 0);
515 if (end == buf || new > INT_MAX || new < INT_MIN)
516 return -EINVAL;
517 *(int *)(ea->var) = new;
518 return end - buf;
519}
520EXPORT_SYMBOL_GPL(sysdev_store_int);
521
522ssize_t sysdev_show_int(struct sys_device *sysdev,
523 struct sysdev_attribute *attr,
524 char *buf)
525{
526 struct sysdev_ext_attribute *ea = to_ext_attr(attr);
527 return snprintf(buf, PAGE_SIZE, "%d\n", *(int *)(ea->var));
528}
529EXPORT_SYMBOL_GPL(sysdev_show_int);
530
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 3f6d9b0a6abe..199cd97e32e6 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -34,7 +34,8 @@
34static SYSDEV_ATTR(_name, 0444, show_##_name, NULL) 34static SYSDEV_ATTR(_name, 0444, show_##_name, NULL)
35 35
36#define define_id_show_func(name) \ 36#define define_id_show_func(name) \
37static ssize_t show_##name(struct sys_device *dev, char *buf) \ 37static ssize_t show_##name(struct sys_device *dev, \
38 struct sysdev_attribute *attr, char *buf) \
38{ \ 39{ \
39 unsigned int cpu = dev->id; \ 40 unsigned int cpu = dev->id; \
40 return sprintf(buf, "%d\n", topology_##name(cpu)); \ 41 return sprintf(buf, "%d\n", topology_##name(cpu)); \
@@ -59,14 +60,17 @@ static ssize_t show_cpumap(int type, cpumask_t *mask, char *buf)
59 60
60#ifdef arch_provides_topology_pointers 61#ifdef arch_provides_topology_pointers
61#define define_siblings_show_map(name) \ 62#define define_siblings_show_map(name) \
62static ssize_t show_##name(struct sys_device *dev, char *buf) \ 63static ssize_t show_##name(struct sys_device *dev, \
64 struct sysdev_attribute *attr, char *buf) \
63{ \ 65{ \
64 unsigned int cpu = dev->id; \ 66 unsigned int cpu = dev->id; \
65 return show_cpumap(0, &(topology_##name(cpu)), buf); \ 67 return show_cpumap(0, &(topology_##name(cpu)), buf); \
66} 68}
67 69
68#define define_siblings_show_list(name) \ 70#define define_siblings_show_list(name) \
69static ssize_t show_##name##_list(struct sys_device *dev, char *buf) \ 71static ssize_t show_##name##_list(struct sys_device *dev, \
72 struct sysdev_attribute *attr, \
73 char *buf) \
70{ \ 74{ \
71 unsigned int cpu = dev->id; \ 75 unsigned int cpu = dev->id; \
72 return show_cpumap(1, &(topology_##name(cpu)), buf); \ 76 return show_cpumap(1, &(topology_##name(cpu)), buf); \
@@ -74,7 +78,8 @@ static ssize_t show_##name##_list(struct sys_device *dev, char *buf) \
74 78
75#else 79#else
76#define define_siblings_show_map(name) \ 80#define define_siblings_show_map(name) \
77static ssize_t show_##name(struct sys_device *dev, char *buf) \ 81static ssize_t show_##name(struct sys_device *dev, \
82 struct sysdev_attribute *attr, char *buf) \
78{ \ 83{ \
79 unsigned int cpu = dev->id; \ 84 unsigned int cpu = dev->id; \
80 cpumask_t mask = topology_##name(cpu); \ 85 cpumask_t mask = topology_##name(cpu); \
@@ -82,7 +87,9 @@ static ssize_t show_##name(struct sys_device *dev, char *buf) \
82} 87}
83 88
84#define define_siblings_show_list(name) \ 89#define define_siblings_show_list(name) \
85static ssize_t show_##name##_list(struct sys_device *dev, char *buf) \ 90static ssize_t show_##name##_list(struct sys_device *dev, \
91 struct sysdev_attribute *attr, \
92 char *buf) \
86{ \ 93{ \
87 unsigned int cpu = dev->id; \ 94 unsigned int cpu = dev->id; \
88 cpumask_t mask = topology_##name(cpu); \ 95 cpumask_t mask = topology_##name(cpu); \
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-09 12:11:32 -0500