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1 | /* |
2 | * gendisk handling |
3 | */ |
4 | |
5 | #include <linux/module.h> |
6 | #include <linux/fs.h> |
7 | #include <linux/genhd.h> |
8 | #include <linux/kdev_t.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/blkdev.h> |
11 | #include <linux/init.h> |
12 | #include <linux/spinlock.h> |
13 | #include <linux/proc_fs.h> |
14 | #include <linux/seq_file.h> |
15 | #include <linux/slab.h> |
16 | #include <linux/kmod.h> |
17 | #include <linux/kobj_map.h> |
18 | #include <linux/buffer_head.h> |
19 | #include <linux/mutex.h> |
20 | #include <linux/idr.h> |
21 | |
22 | #include "blk.h" |
23 | |
24 | static DEFINE_MUTEX(block_class_lock); |
25 | #ifndef CONFIG_SYSFS_DEPRECATED |
26 | struct kobject *block_depr; |
27 | #endif |
28 | |
29 | /* for extended dynamic devt allocation, currently only one major is used */ |
30 | #define MAX_EXT_DEVT (1 << MINORBITS) |
31 | |
32 | /* For extended devt allocation. ext_devt_mutex prevents look up |
33 | * results from going away underneath its user. |
34 | */ |
35 | static DEFINE_MUTEX(ext_devt_mutex); |
36 | static DEFINE_IDR(ext_devt_idr); |
37 | |
38 | static struct device_type disk_type; |
39 | |
40 | /** |
41 | * disk_get_part - get partition |
42 | * @disk: disk to look partition from |
43 | * @partno: partition number |
44 | * |
45 | * Look for partition @partno from @disk. If found, increment |
46 | * reference count and return it. |
47 | * |
48 | * CONTEXT: |
49 | * Don't care. |
50 | * |
51 | * RETURNS: |
52 | * Pointer to the found partition on success, NULL if not found. |
53 | */ |
54 | struct hd_struct *disk_get_part(struct gendisk *disk, int partno) |
55 | { |
56 | struct hd_struct *part = NULL; |
57 | struct disk_part_tbl *ptbl; |
58 | |
59 | if (unlikely(partno < 0)) |
60 | return NULL; |
61 | |
62 | rcu_read_lock(); |
63 | |
64 | ptbl = rcu_dereference(disk->part_tbl); |
65 | if (likely(partno < ptbl->len)) { |
66 | part = rcu_dereference(ptbl->part[partno]); |
67 | if (part) |
68 | get_device(part_to_dev(part)); |
69 | } |
70 | |
71 | rcu_read_unlock(); |
72 | |
73 | return part; |
74 | } |
75 | EXPORT_SYMBOL_GPL(disk_get_part); |
76 | |
77 | /** |
78 | * disk_part_iter_init - initialize partition iterator |
79 | * @piter: iterator to initialize |
80 | * @disk: disk to iterate over |
81 | * @flags: DISK_PITER_* flags |
82 | * |
83 | * Initialize @piter so that it iterates over partitions of @disk. |
84 | * |
85 | * CONTEXT: |
86 | * Don't care. |
87 | */ |
88 | void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk, |
89 | unsigned int flags) |
90 | { |
91 | struct disk_part_tbl *ptbl; |
92 | |
93 | rcu_read_lock(); |
94 | ptbl = rcu_dereference(disk->part_tbl); |
95 | |
96 | piter->disk = disk; |
97 | piter->part = NULL; |
98 | |
99 | if (flags & DISK_PITER_REVERSE) |
100 | piter->idx = ptbl->len - 1; |
101 | else if (flags & (DISK_PITER_INCL_PART0 | DISK_PITER_INCL_EMPTY_PART0)) |
102 | piter->idx = 0; |
103 | else |
104 | piter->idx = 1; |
105 | |
106 | piter->flags = flags; |
107 | |
108 | rcu_read_unlock(); |
109 | } |
110 | EXPORT_SYMBOL_GPL(disk_part_iter_init); |
111 | |
112 | /** |
113 | * disk_part_iter_next - proceed iterator to the next partition and return it |
114 | * @piter: iterator of interest |
115 | * |
116 | * Proceed @piter to the next partition and return it. |
117 | * |
118 | * CONTEXT: |
119 | * Don't care. |
120 | */ |
121 | struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter) |
122 | { |
123 | struct disk_part_tbl *ptbl; |
124 | int inc, end; |
125 | |
126 | /* put the last partition */ |
127 | disk_put_part(piter->part); |
128 | piter->part = NULL; |
129 | |
130 | /* get part_tbl */ |
131 | rcu_read_lock(); |
132 | ptbl = rcu_dereference(piter->disk->part_tbl); |
133 | |
134 | /* determine iteration parameters */ |
135 | if (piter->flags & DISK_PITER_REVERSE) { |
136 | inc = -1; |
137 | if (piter->flags & (DISK_PITER_INCL_PART0 | |
138 | DISK_PITER_INCL_EMPTY_PART0)) |
139 | end = -1; |
140 | else |
141 | end = 0; |
142 | } else { |
143 | inc = 1; |
144 | end = ptbl->len; |
145 | } |
146 | |
147 | /* iterate to the next partition */ |
148 | for (; piter->idx != end; piter->idx += inc) { |
149 | struct hd_struct *part; |
150 | |
151 | part = rcu_dereference(ptbl->part[piter->idx]); |
152 | if (!part) |
153 | continue; |
154 | if (!part->nr_sects && |
155 | !(piter->flags & DISK_PITER_INCL_EMPTY) && |
156 | !(piter->flags & DISK_PITER_INCL_EMPTY_PART0 && |
157 | piter->idx == 0)) |
158 | continue; |
159 | |
160 | get_device(part_to_dev(part)); |
161 | piter->part = part; |
162 | piter->idx += inc; |
163 | break; |
164 | } |
165 | |
166 | rcu_read_unlock(); |
167 | |
168 | return piter->part; |
169 | } |
170 | EXPORT_SYMBOL_GPL(disk_part_iter_next); |
171 | |
172 | /** |
173 | * disk_part_iter_exit - finish up partition iteration |
174 | * @piter: iter of interest |
175 | * |
176 | * Called when iteration is over. Cleans up @piter. |
177 | * |
178 | * CONTEXT: |
179 | * Don't care. |
180 | */ |
181 | void disk_part_iter_exit(struct disk_part_iter *piter) |
182 | { |
183 | disk_put_part(piter->part); |
184 | piter->part = NULL; |
185 | } |
186 | EXPORT_SYMBOL_GPL(disk_part_iter_exit); |
187 | |
188 | static inline int sector_in_part(struct hd_struct *part, sector_t sector) |
189 | { |
190 | return part->start_sect <= sector && |
191 | sector < part->start_sect + part->nr_sects; |
192 | } |
193 | |
194 | /** |
195 | * disk_map_sector_rcu - map sector to partition |
196 | * @disk: gendisk of interest |
197 | * @sector: sector to map |
198 | * |
199 | * Find out which partition @sector maps to on @disk. This is |
200 | * primarily used for stats accounting. |
201 | * |
202 | * CONTEXT: |
203 | * RCU read locked. The returned partition pointer is valid only |
204 | * while preemption is disabled. |
205 | * |
206 | * RETURNS: |
207 | * Found partition on success, part0 is returned if no partition matches |
208 | */ |
209 | struct hd_struct *disk_map_sector_rcu(struct gendisk *disk, sector_t sector) |
210 | { |
211 | struct disk_part_tbl *ptbl; |
212 | struct hd_struct *part; |
213 | int i; |
214 | |
215 | ptbl = rcu_dereference(disk->part_tbl); |
216 | |
217 | part = rcu_dereference(ptbl->last_lookup); |
218 | if (part && sector_in_part(part, sector)) |
219 | return part; |
220 | |
221 | for (i = 1; i < ptbl->len; i++) { |
222 | part = rcu_dereference(ptbl->part[i]); |
223 | |
224 | if (part && sector_in_part(part, sector)) { |
225 | rcu_assign_pointer(ptbl->last_lookup, part); |
226 | return part; |
227 | } |
228 | } |
229 | return &disk->part0; |
230 | } |
231 | EXPORT_SYMBOL_GPL(disk_map_sector_rcu); |
232 | |
233 | /* |
234 | * Can be deleted altogether. Later. |
235 | * |
236 | */ |
237 | static struct blk_major_name { |
238 | struct blk_major_name *next; |
239 | int major; |
240 | char name[16]; |
241 | } *major_names[BLKDEV_MAJOR_HASH_SIZE]; |
242 | |
243 | /* index in the above - for now: assume no multimajor ranges */ |
244 | static inline int major_to_index(int major) |
245 | { |
246 | return major % BLKDEV_MAJOR_HASH_SIZE; |
247 | } |
248 | |
249 | #ifdef CONFIG_PROC_FS |
250 | void blkdev_show(struct seq_file *seqf, off_t offset) |
251 | { |
252 | struct blk_major_name *dp; |
253 | |
254 | if (offset < BLKDEV_MAJOR_HASH_SIZE) { |
255 | mutex_lock(&block_class_lock); |
256 | for (dp = major_names[offset]; dp; dp = dp->next) |
257 | seq_printf(seqf, "%3d %s\n", dp->major, dp->name); |
258 | mutex_unlock(&block_class_lock); |
259 | } |
260 | } |
261 | #endif /* CONFIG_PROC_FS */ |
262 | |
263 | /** |
264 | * register_blkdev - register a new block device |
265 | * |
266 | * @major: the requested major device number [1..255]. If @major=0, try to |
267 | * allocate any unused major number. |
268 | * @name: the name of the new block device as a zero terminated string |
269 | * |
270 | * The @name must be unique within the system. |
271 | * |
272 | * The return value depends on the @major input parameter. |
273 | * - if a major device number was requested in range [1..255] then the |
274 | * function returns zero on success, or a negative error code |
275 | * - if any unused major number was requested with @major=0 parameter |
276 | * then the return value is the allocated major number in range |
277 | * [1..255] or a negative error code otherwise |
278 | */ |
279 | int register_blkdev(unsigned int major, const char *name) |
280 | { |
281 | struct blk_major_name **n, *p; |
282 | int index, ret = 0; |
283 | |
284 | mutex_lock(&block_class_lock); |
285 | |
286 | /* temporary */ |
287 | if (major == 0) { |
288 | for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) { |
289 | if (major_names[index] == NULL) |
290 | break; |
291 | } |
292 | |
293 | if (index == 0) { |
294 | printk("register_blkdev: failed to get major for %s\n", |
295 | name); |
296 | ret = -EBUSY; |
297 | goto out; |
298 | } |
299 | major = index; |
300 | ret = major; |
301 | } |
302 | |
303 | p = kmalloc(sizeof(struct blk_major_name), GFP_KERNEL); |
304 | if (p == NULL) { |
305 | ret = -ENOMEM; |
306 | goto out; |
307 | } |
308 | |
309 | p->major = major; |
310 | strlcpy(p->name, name, sizeof(p->name)); |
311 | p->next = NULL; |
312 | index = major_to_index(major); |
313 | |
314 | for (n = &major_names[index]; *n; n = &(*n)->next) { |
315 | if ((*n)->major == major) |
316 | break; |
317 | } |
318 | if (!*n) |
319 | *n = p; |
320 | else |
321 | ret = -EBUSY; |
322 | |
323 | if (ret < 0) { |
324 | printk("register_blkdev: cannot get major %d for %s\n", |
325 | major, name); |
326 | kfree(p); |
327 | } |
328 | out: |
329 | mutex_unlock(&block_class_lock); |
330 | return ret; |
331 | } |
332 | |
333 | EXPORT_SYMBOL(register_blkdev); |
334 | |
335 | void unregister_blkdev(unsigned int major, const char *name) |
336 | { |
337 | struct blk_major_name **n; |
338 | struct blk_major_name *p = NULL; |
339 | int index = major_to_index(major); |
340 | |
341 | mutex_lock(&block_class_lock); |
342 | for (n = &major_names[index]; *n; n = &(*n)->next) |
343 | if ((*n)->major == major) |
344 | break; |
345 | if (!*n || strcmp((*n)->name, name)) { |
346 | WARN_ON(1); |
347 | } else { |
348 | p = *n; |
349 | *n = p->next; |
350 | } |
351 | mutex_unlock(&block_class_lock); |
352 | kfree(p); |
353 | } |
354 | |
355 | EXPORT_SYMBOL(unregister_blkdev); |
356 | |
357 | static struct kobj_map *bdev_map; |
358 | |
359 | /** |
360 | * blk_mangle_minor - scatter minor numbers apart |
361 | * @minor: minor number to mangle |
362 | * |
363 | * Scatter consecutively allocated @minor number apart if MANGLE_DEVT |
364 | * is enabled. Mangling twice gives the original value. |
365 | * |
366 | * RETURNS: |
367 | * Mangled value. |
368 | * |
369 | * CONTEXT: |
370 | * Don't care. |
371 | */ |
372 | static int blk_mangle_minor(int minor) |
373 | { |
374 | #ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT |
375 | int i; |
376 | |
377 | for (i = 0; i < MINORBITS / 2; i++) { |
378 | int low = minor & (1 << i); |
379 | int high = minor & (1 << (MINORBITS - 1 - i)); |
380 | int distance = MINORBITS - 1 - 2 * i; |
381 | |
382 | minor ^= low | high; /* clear both bits */ |
383 | low <<= distance; /* swap the positions */ |
384 | high >>= distance; |
385 | minor |= low | high; /* and set */ |
386 | } |
387 | #endif |
388 | return minor; |
389 | } |
390 | |
391 | /** |
392 | * blk_alloc_devt - allocate a dev_t for a partition |
393 | * @part: partition to allocate dev_t for |
394 | * @devt: out parameter for resulting dev_t |
395 | * |
396 | * Allocate a dev_t for block device. |
397 | * |
398 | * RETURNS: |
399 | * 0 on success, allocated dev_t is returned in *@devt. -errno on |
400 | * failure. |
401 | * |
402 | * CONTEXT: |
403 | * Might sleep. |
404 | */ |
405 | int blk_alloc_devt(struct hd_struct *part, dev_t *devt) |
406 | { |
407 | struct gendisk *disk = part_to_disk(part); |
408 | int idx, rc; |
409 | |
410 | /* in consecutive minor range? */ |
411 | if (part->partno < disk->minors) { |
412 | *devt = MKDEV(disk->major, disk->first_minor + part->partno); |
413 | return 0; |
414 | } |
415 | |
416 | /* allocate ext devt */ |
417 | do { |
418 | if (!idr_pre_get(&ext_devt_idr, GFP_KERNEL)) |
419 | return -ENOMEM; |
420 | rc = idr_get_new(&ext_devt_idr, part, &idx); |
421 | } while (rc == -EAGAIN); |
422 | |
423 | if (rc) |
424 | return rc; |
425 | |
426 | if (idx > MAX_EXT_DEVT) { |
427 | idr_remove(&ext_devt_idr, idx); |
428 | return -EBUSY; |
429 | } |
430 | |
431 | *devt = MKDEV(BLOCK_EXT_MAJOR, blk_mangle_minor(idx)); |
432 | return 0; |
433 | } |
434 | |
435 | /** |
436 | * blk_free_devt - free a dev_t |
437 | * @devt: dev_t to free |
438 | * |
439 | * Free @devt which was allocated using blk_alloc_devt(). |
440 | * |
441 | * CONTEXT: |
442 | * Might sleep. |
443 | */ |
444 | void blk_free_devt(dev_t devt) |
445 | { |
446 | might_sleep(); |
447 | |
448 | if (devt == MKDEV(0, 0)) |
449 | return; |
450 | |
451 | if (MAJOR(devt) == BLOCK_EXT_MAJOR) { |
452 | mutex_lock(&ext_devt_mutex); |
453 | idr_remove(&ext_devt_idr, blk_mangle_minor(MINOR(devt))); |
454 | mutex_unlock(&ext_devt_mutex); |
455 | } |
456 | } |
457 | |
458 | static char *bdevt_str(dev_t devt, char *buf) |
459 | { |
460 | if (MAJOR(devt) <= 0xff && MINOR(devt) <= 0xff) { |
461 | char tbuf[BDEVT_SIZE]; |
462 | snprintf(tbuf, BDEVT_SIZE, "%02x%02x", MAJOR(devt), MINOR(devt)); |
463 | snprintf(buf, BDEVT_SIZE, "%-9s", tbuf); |
464 | } else |
465 | snprintf(buf, BDEVT_SIZE, "%03x:%05x", MAJOR(devt), MINOR(devt)); |
466 | |
467 | return buf; |
468 | } |
469 | |
470 | /* |
471 | * Register device numbers dev..(dev+range-1) |
472 | * range must be nonzero |
473 | * The hash chain is sorted on range, so that subranges can override. |
474 | */ |
475 | void blk_register_region(dev_t devt, unsigned long range, struct module *module, |
476 | struct kobject *(*probe)(dev_t, int *, void *), |
477 | int (*lock)(dev_t, void *), void *data) |
478 | { |
479 | kobj_map(bdev_map, devt, range, module, probe, lock, data); |
480 | } |
481 | |
482 | EXPORT_SYMBOL(blk_register_region); |
483 | |
484 | void blk_unregister_region(dev_t devt, unsigned long range) |
485 | { |
486 | kobj_unmap(bdev_map, devt, range); |
487 | } |
488 | |
489 | EXPORT_SYMBOL(blk_unregister_region); |
490 | |
491 | static struct kobject *exact_match(dev_t devt, int *partno, void *data) |
492 | { |
493 | struct gendisk *p = data; |
494 | |
495 | return &disk_to_dev(p)->kobj; |
496 | } |
497 | |
498 | static int exact_lock(dev_t devt, void *data) |
499 | { |
500 | struct gendisk *p = data; |
501 | |
502 | if (!get_disk(p)) |
503 | return -1; |
504 | return 0; |
505 | } |
506 | |
507 | /** |
508 | * add_disk - add partitioning information to kernel list |
509 | * @disk: per-device partitioning information |
510 | * |
511 | * This function registers the partitioning information in @disk |
512 | * with the kernel. |
513 | * |
514 | * FIXME: error handling |
515 | */ |
516 | void add_disk(struct gendisk *disk) |
517 | { |
518 | struct backing_dev_info *bdi; |
519 | dev_t devt; |
520 | int retval; |
521 | |
522 | /* minors == 0 indicates to use ext devt from part0 and should |
523 | * be accompanied with EXT_DEVT flag. Make sure all |
524 | * parameters make sense. |
525 | */ |
526 | WARN_ON(disk->minors && !(disk->major || disk->first_minor)); |
527 | WARN_ON(!disk->minors && !(disk->flags & GENHD_FL_EXT_DEVT)); |
528 | |
529 | disk->flags |= GENHD_FL_UP; |
530 | |
531 | retval = blk_alloc_devt(&disk->part0, &devt); |
532 | if (retval) { |
533 | WARN_ON(1); |
534 | return; |
535 | } |
536 | disk_to_dev(disk)->devt = devt; |
537 | |
538 | /* ->major and ->first_minor aren't supposed to be |
539 | * dereferenced from here on, but set them just in case. |
540 | */ |
541 | disk->major = MAJOR(devt); |
542 | disk->first_minor = MINOR(devt); |
543 | |
544 | blk_register_region(disk_devt(disk), disk->minors, NULL, |
545 | exact_match, exact_lock, disk); |
546 | register_disk(disk); |
547 | blk_register_queue(disk); |
548 | |
549 | bdi = &disk->queue->backing_dev_info; |
550 | bdi_register_dev(bdi, disk_devt(disk)); |
551 | retval = sysfs_create_link(&disk_to_dev(disk)->kobj, &bdi->dev->kobj, |
552 | "bdi"); |
553 | WARN_ON(retval); |
554 | } |
555 | |
556 | EXPORT_SYMBOL(add_disk); |
557 | EXPORT_SYMBOL(del_gendisk); /* in partitions/check.c */ |
558 | |
559 | void unlink_gendisk(struct gendisk *disk) |
560 | { |
561 | sysfs_remove_link(&disk_to_dev(disk)->kobj, "bdi"); |
562 | bdi_unregister(&disk->queue->backing_dev_info); |
563 | blk_unregister_queue(disk); |
564 | blk_unregister_region(disk_devt(disk), disk->minors); |
565 | } |
566 | |
567 | /** |
568 | * get_gendisk - get partitioning information for a given device |
569 | * @devt: device to get partitioning information for |
570 | * @partno: returned partition index |
571 | * |
572 | * This function gets the structure containing partitioning |
573 | * information for the given device @devt. |
574 | */ |
575 | struct gendisk *get_gendisk(dev_t devt, int *partno) |
576 | { |
577 | struct gendisk *disk = NULL; |
578 | |
579 | if (MAJOR(devt) != BLOCK_EXT_MAJOR) { |
580 | struct kobject *kobj; |
581 | |
582 | kobj = kobj_lookup(bdev_map, devt, partno); |
583 | if (kobj) |
584 | disk = dev_to_disk(kobj_to_dev(kobj)); |
585 | } else { |
586 | struct hd_struct *part; |
587 | |
588 | mutex_lock(&ext_devt_mutex); |
589 | part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt))); |
590 | if (part && get_disk(part_to_disk(part))) { |
591 | *partno = part->partno; |
592 | disk = part_to_disk(part); |
593 | } |
594 | mutex_unlock(&ext_devt_mutex); |
595 | } |
596 | |
597 | return disk; |
598 | } |
599 | |
600 | /** |
601 | * bdget_disk - do bdget() by gendisk and partition number |
602 | * @disk: gendisk of interest |
603 | * @partno: partition number |
604 | * |
605 | * Find partition @partno from @disk, do bdget() on it. |
606 | * |
607 | * CONTEXT: |
608 | * Don't care. |
609 | * |
610 | * RETURNS: |
611 | * Resulting block_device on success, NULL on failure. |
612 | */ |
613 | struct block_device *bdget_disk(struct gendisk *disk, int partno) |
614 | { |
615 | struct hd_struct *part; |
616 | struct block_device *bdev = NULL; |
617 | |
618 | part = disk_get_part(disk, partno); |
619 | if (part) |
620 | bdev = bdget(part_devt(part)); |
621 | disk_put_part(part); |
622 | |
623 | return bdev; |
624 | } |
625 | EXPORT_SYMBOL(bdget_disk); |
626 | |
627 | /* |
628 | * print a full list of all partitions - intended for places where the root |
629 | * filesystem can't be mounted and thus to give the victim some idea of what |
630 | * went wrong |
631 | */ |
632 | void __init printk_all_partitions(void) |
633 | { |
634 | struct class_dev_iter iter; |
635 | struct device *dev; |
636 | |
637 | class_dev_iter_init(&iter, &block_class, NULL, &disk_type); |
638 | while ((dev = class_dev_iter_next(&iter))) { |
639 | struct gendisk *disk = dev_to_disk(dev); |
640 | struct disk_part_iter piter; |
641 | struct hd_struct *part; |
642 | char name_buf[BDEVNAME_SIZE]; |
643 | char devt_buf[BDEVT_SIZE]; |
644 | |
645 | /* |
646 | * Don't show empty devices or things that have been |
647 | * surpressed |
648 | */ |
649 | if (get_capacity(disk) == 0 || |
650 | (disk->flags & GENHD_FL_SUPPRESS_PARTITION_INFO)) |
651 | continue; |
652 | |
653 | /* |
654 | * Note, unlike /proc/partitions, I am showing the |
655 | * numbers in hex - the same format as the root= |
656 | * option takes. |
657 | */ |
658 | disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0); |
659 | while ((part = disk_part_iter_next(&piter))) { |
660 | bool is_part0 = part == &disk->part0; |
661 | |
662 | printk("%s%s %10llu %s", is_part0 ? "" : " ", |
663 | bdevt_str(part_devt(part), devt_buf), |
664 | (unsigned long long)part->nr_sects >> 1, |
665 | disk_name(disk, part->partno, name_buf)); |
666 | if (is_part0) { |
667 | if (disk->driverfs_dev != NULL && |
668 | disk->driverfs_dev->driver != NULL) |
669 | printk(" driver: %s\n", |
670 | disk->driverfs_dev->driver->name); |
671 | else |
672 | printk(" (driver?)\n"); |
673 | } else |
674 | printk("\n"); |
675 | } |
676 | disk_part_iter_exit(&piter); |
677 | } |
678 | class_dev_iter_exit(&iter); |
679 | } |
680 | |
681 | #ifdef CONFIG_PROC_FS |
682 | /* iterator */ |
683 | static void *disk_seqf_start(struct seq_file *seqf, loff_t *pos) |
684 | { |
685 | loff_t skip = *pos; |
686 | struct class_dev_iter *iter; |
687 | struct device *dev; |
688 | |
689 | iter = kmalloc(sizeof(*iter), GFP_KERNEL); |
690 | if (!iter) |
691 | return ERR_PTR(-ENOMEM); |
692 | |
693 | seqf->private = iter; |
694 | class_dev_iter_init(iter, &block_class, NULL, &disk_type); |
695 | do { |
696 | dev = class_dev_iter_next(iter); |
697 | if (!dev) |
698 | return NULL; |
699 | } while (skip--); |
700 | |
701 | return dev_to_disk(dev); |
702 | } |
703 | |
704 | static void *disk_seqf_next(struct seq_file *seqf, void *v, loff_t *pos) |
705 | { |
706 | struct device *dev; |
707 | |
708 | (*pos)++; |
709 | dev = class_dev_iter_next(seqf->private); |
710 | if (dev) |
711 | return dev_to_disk(dev); |
712 | |
713 | return NULL; |
714 | } |
715 | |
716 | static void disk_seqf_stop(struct seq_file *seqf, void *v) |
717 | { |
718 | struct class_dev_iter *iter = seqf->private; |
719 | |
720 | /* stop is called even after start failed :-( */ |
721 | if (iter) { |
722 | class_dev_iter_exit(iter); |
723 | kfree(iter); |
724 | } |
725 | } |
726 | |
727 | static void *show_partition_start(struct seq_file *seqf, loff_t *pos) |
728 | { |
729 | static void *p; |
730 | |
731 | p = disk_seqf_start(seqf, pos); |
732 | if (!IS_ERR(p) && p && !*pos) |
733 | seq_puts(seqf, "major minor #blocks name\n\n"); |
734 | return p; |
735 | } |
736 | |
737 | static int show_partition(struct seq_file *seqf, void *v) |
738 | { |
739 | struct gendisk *sgp = v; |
740 | struct disk_part_iter piter; |
741 | struct hd_struct *part; |
742 | char buf[BDEVNAME_SIZE]; |
743 | |
744 | /* Don't show non-partitionable removeable devices or empty devices */ |
745 | if (!get_capacity(sgp) || (!disk_partitionable(sgp) && |
746 | (sgp->flags & GENHD_FL_REMOVABLE))) |
747 | return 0; |
748 | if (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO) |
749 | return 0; |
750 | |
751 | /* show the full disk and all non-0 size partitions of it */ |
752 | disk_part_iter_init(&piter, sgp, DISK_PITER_INCL_PART0); |
753 | while ((part = disk_part_iter_next(&piter))) |
754 | seq_printf(seqf, "%4d %7d %10llu %s\n", |
755 | MAJOR(part_devt(part)), MINOR(part_devt(part)), |
756 | (unsigned long long)part->nr_sects >> 1, |
757 | disk_name(sgp, part->partno, buf)); |
758 | disk_part_iter_exit(&piter); |
759 | |
760 | return 0; |
761 | } |
762 | |
763 | static const struct seq_operations partitions_op = { |
764 | .start = show_partition_start, |
765 | .next = disk_seqf_next, |
766 | .stop = disk_seqf_stop, |
767 | .show = show_partition |
768 | }; |
769 | |
770 | static int partitions_open(struct inode *inode, struct file *file) |
771 | { |
772 | return seq_open(file, &partitions_op); |
773 | } |
774 | |
775 | static const struct file_operations proc_partitions_operations = { |
776 | .open = partitions_open, |
777 | .read = seq_read, |
778 | .llseek = seq_lseek, |
779 | .release = seq_release, |
780 | }; |
781 | #endif |
782 | |
783 | |
784 | static struct kobject *base_probe(dev_t devt, int *partno, void *data) |
785 | { |
786 | if (request_module("block-major-%d-%d", MAJOR(devt), MINOR(devt)) > 0) |
787 | /* Make old-style 2.4 aliases work */ |
788 | request_module("block-major-%d", MAJOR(devt)); |
789 | return NULL; |
790 | } |
791 | |
792 | static int __init genhd_device_init(void) |
793 | { |
794 | int error; |
795 | |
796 | block_class.dev_kobj = sysfs_dev_block_kobj; |
797 | error = class_register(&block_class); |
798 | if (unlikely(error)) |
799 | return error; |
800 | bdev_map = kobj_map_init(base_probe, &block_class_lock); |
801 | blk_dev_init(); |
802 | |
803 | register_blkdev(BLOCK_EXT_MAJOR, "blkext"); |
804 | |
805 | #ifndef CONFIG_SYSFS_DEPRECATED |
806 | /* create top-level block dir */ |
807 | block_depr = kobject_create_and_add("block", NULL); |
808 | #endif |
809 | return 0; |
810 | } |
811 | |
812 | subsys_initcall(genhd_device_init); |
813 | |
814 | static ssize_t disk_range_show(struct device *dev, |
815 | struct device_attribute *attr, char *buf) |
816 | { |
817 | struct gendisk *disk = dev_to_disk(dev); |
818 | |
819 | return sprintf(buf, "%d\n", disk->minors); |
820 | } |
821 | |
822 | static ssize_t disk_ext_range_show(struct device *dev, |
823 | struct device_attribute *attr, char *buf) |
824 | { |
825 | struct gendisk *disk = dev_to_disk(dev); |
826 | |
827 | return sprintf(buf, "%d\n", disk_max_parts(disk)); |
828 | } |
829 | |
830 | static ssize_t disk_removable_show(struct device *dev, |
831 | struct device_attribute *attr, char *buf) |
832 | { |
833 | struct gendisk *disk = dev_to_disk(dev); |
834 | |
835 | return sprintf(buf, "%d\n", |
836 | (disk->flags & GENHD_FL_REMOVABLE ? 1 : 0)); |
837 | } |
838 | |
839 | static ssize_t disk_ro_show(struct device *dev, |
840 | struct device_attribute *attr, char *buf) |
841 | { |
842 | struct gendisk *disk = dev_to_disk(dev); |
843 | |
844 | return sprintf(buf, "%d\n", get_disk_ro(disk) ? 1 : 0); |
845 | } |
846 | |
847 | static ssize_t disk_capability_show(struct device *dev, |
848 | struct device_attribute *attr, char *buf) |
849 | { |
850 | struct gendisk *disk = dev_to_disk(dev); |
851 | |
852 | return sprintf(buf, "%x\n", disk->flags); |
853 | } |
854 | |
855 | static ssize_t disk_alignment_offset_show(struct device *dev, |
856 | struct device_attribute *attr, |
857 | char *buf) |
858 | { |
859 | struct gendisk *disk = dev_to_disk(dev); |
860 | |
861 | return sprintf(buf, "%d\n", queue_alignment_offset(disk->queue)); |
862 | } |
863 | |
864 | static ssize_t disk_discard_alignment_show(struct device *dev, |
865 | struct device_attribute *attr, |
866 | char *buf) |
867 | { |
868 | struct gendisk *disk = dev_to_disk(dev); |
869 | |
870 | return sprintf(buf, "%d\n", queue_discard_alignment(disk->queue)); |
871 | } |
872 | |
873 | static DEVICE_ATTR(range, S_IRUGO, disk_range_show, NULL); |
874 | static DEVICE_ATTR(ext_range, S_IRUGO, disk_ext_range_show, NULL); |
875 | static DEVICE_ATTR(removable, S_IRUGO, disk_removable_show, NULL); |
876 | static DEVICE_ATTR(ro, S_IRUGO, disk_ro_show, NULL); |
877 | static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL); |
878 | static DEVICE_ATTR(alignment_offset, S_IRUGO, disk_alignment_offset_show, NULL); |
879 | static DEVICE_ATTR(discard_alignment, S_IRUGO, disk_discard_alignment_show, |
880 | NULL); |
881 | static DEVICE_ATTR(capability, S_IRUGO, disk_capability_show, NULL); |
882 | static DEVICE_ATTR(stat, S_IRUGO, part_stat_show, NULL); |
883 | static DEVICE_ATTR(inflight, S_IRUGO, part_inflight_show, NULL); |
884 | #ifdef CONFIG_FAIL_MAKE_REQUEST |
885 | static struct device_attribute dev_attr_fail = |
886 | __ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store); |
887 | #endif |
888 | #ifdef CONFIG_FAIL_IO_TIMEOUT |
889 | static struct device_attribute dev_attr_fail_timeout = |
890 | __ATTR(io-timeout-fail, S_IRUGO|S_IWUSR, part_timeout_show, |
891 | part_timeout_store); |
892 | #endif |
893 | |
894 | static struct attribute *disk_attrs[] = { |
895 | &dev_attr_range.attr, |
896 | &dev_attr_ext_range.attr, |
897 | &dev_attr_removable.attr, |
898 | &dev_attr_ro.attr, |
899 | &dev_attr_size.attr, |
900 | &dev_attr_alignment_offset.attr, |
901 | &dev_attr_discard_alignment.attr, |
902 | &dev_attr_capability.attr, |
903 | &dev_attr_stat.attr, |
904 | &dev_attr_inflight.attr, |
905 | #ifdef CONFIG_FAIL_MAKE_REQUEST |
906 | &dev_attr_fail.attr, |
907 | #endif |
908 | #ifdef CONFIG_FAIL_IO_TIMEOUT |
909 | &dev_attr_fail_timeout.attr, |
910 | #endif |
911 | NULL |
912 | }; |
913 | |
914 | static struct attribute_group disk_attr_group = { |
915 | .attrs = disk_attrs, |
916 | }; |
917 | |
918 | static const struct attribute_group *disk_attr_groups[] = { |
919 | &disk_attr_group, |
920 | NULL |
921 | }; |
922 | |
923 | static void disk_free_ptbl_rcu_cb(struct rcu_head *head) |
924 | { |
925 | struct disk_part_tbl *ptbl = |
926 | container_of(head, struct disk_part_tbl, rcu_head); |
927 | |
928 | kfree(ptbl); |
929 | } |
930 | |
931 | /** |
932 | * disk_replace_part_tbl - replace disk->part_tbl in RCU-safe way |
933 | * @disk: disk to replace part_tbl for |
934 | * @new_ptbl: new part_tbl to install |
935 | * |
936 | * Replace disk->part_tbl with @new_ptbl in RCU-safe way. The |
937 | * original ptbl is freed using RCU callback. |
938 | * |
939 | * LOCKING: |
940 | * Matching bd_mutx locked. |
941 | */ |
942 | static void disk_replace_part_tbl(struct gendisk *disk, |
943 | struct disk_part_tbl *new_ptbl) |
944 | { |
945 | struct disk_part_tbl *old_ptbl = disk->part_tbl; |
946 | |
947 | rcu_assign_pointer(disk->part_tbl, new_ptbl); |
948 | |
949 | if (old_ptbl) { |
950 | rcu_assign_pointer(old_ptbl->last_lookup, NULL); |
951 | call_rcu(&old_ptbl->rcu_head, disk_free_ptbl_rcu_cb); |
952 | } |
953 | } |
954 | |
955 | /** |
956 | * disk_expand_part_tbl - expand disk->part_tbl |
957 | * @disk: disk to expand part_tbl for |
958 | * @partno: expand such that this partno can fit in |
959 | * |
960 | * Expand disk->part_tbl such that @partno can fit in. disk->part_tbl |
961 | * uses RCU to allow unlocked dereferencing for stats and other stuff. |
962 | * |
963 | * LOCKING: |
964 | * Matching bd_mutex locked, might sleep. |
965 | * |
966 | * RETURNS: |
967 | * 0 on success, -errno on failure. |
968 | */ |
969 | int disk_expand_part_tbl(struct gendisk *disk, int partno) |
970 | { |
971 | struct disk_part_tbl *old_ptbl = disk->part_tbl; |
972 | struct disk_part_tbl *new_ptbl; |
973 | int len = old_ptbl ? old_ptbl->len : 0; |
974 | int target = partno + 1; |
975 | size_t size; |
976 | int i; |
977 | |
978 | /* disk_max_parts() is zero during initialization, ignore if so */ |
979 | if (disk_max_parts(disk) && target > disk_max_parts(disk)) |
980 | return -EINVAL; |
981 | |
982 | if (target <= len) |
983 | return 0; |
984 | |
985 | size = sizeof(*new_ptbl) + target * sizeof(new_ptbl->part[0]); |
986 | new_ptbl = kzalloc_node(size, GFP_KERNEL, disk->node_id); |
987 | if (!new_ptbl) |
988 | return -ENOMEM; |
989 | |
990 | INIT_RCU_HEAD(&new_ptbl->rcu_head); |
991 | new_ptbl->len = target; |
992 | |
993 | for (i = 0; i < len; i++) |
994 | rcu_assign_pointer(new_ptbl->part[i], old_ptbl->part[i]); |
995 | |
996 | disk_replace_part_tbl(disk, new_ptbl); |
997 | return 0; |
998 | } |
999 | |
1000 | static void disk_release(struct device *dev) |
1001 | { |
1002 | struct gendisk *disk = dev_to_disk(dev); |
1003 | |
1004 | kfree(disk->random); |
1005 | disk_replace_part_tbl(disk, NULL); |
1006 | free_part_stats(&disk->part0); |
1007 | kfree(disk); |
1008 | } |
1009 | struct class block_class = { |
1010 | .name = "block", |
1011 | }; |
1012 | |
1013 | static char *block_devnode(struct device *dev, mode_t *mode) |
1014 | { |
1015 | struct gendisk *disk = dev_to_disk(dev); |
1016 | |
1017 | if (disk->devnode) |
1018 | return disk->devnode(disk, mode); |
1019 | return NULL; |
1020 | } |
1021 | |
1022 | static struct device_type disk_type = { |
1023 | .name = "disk", |
1024 | .groups = disk_attr_groups, |
1025 | .release = disk_release, |
1026 | .devnode = block_devnode, |
1027 | }; |
1028 | |
1029 | #ifdef CONFIG_PROC_FS |
1030 | /* |
1031 | * aggregate disk stat collector. Uses the same stats that the sysfs |
1032 | * entries do, above, but makes them available through one seq_file. |
1033 | * |
1034 | * The output looks suspiciously like /proc/partitions with a bunch of |
1035 | * extra fields. |
1036 | */ |
1037 | static int diskstats_show(struct seq_file *seqf, void *v) |
1038 | { |
1039 | struct gendisk *gp = v; |
1040 | struct disk_part_iter piter; |
1041 | struct hd_struct *hd; |
1042 | char buf[BDEVNAME_SIZE]; |
1043 | int cpu; |
1044 | |
1045 | /* |
1046 | if (&disk_to_dev(gp)->kobj.entry == block_class.devices.next) |
1047 | seq_puts(seqf, "major minor name" |
1048 | " rio rmerge rsect ruse wio wmerge " |
1049 | "wsect wuse running use aveq" |
1050 | "\n\n"); |
1051 | */ |
1052 | |
1053 | disk_part_iter_init(&piter, gp, DISK_PITER_INCL_EMPTY_PART0); |
1054 | while ((hd = disk_part_iter_next(&piter))) { |
1055 | cpu = part_stat_lock(); |
1056 | part_round_stats(cpu, hd); |
1057 | part_stat_unlock(); |
1058 | seq_printf(seqf, "%4d %7d %s %lu %lu %llu " |
1059 | "%u %lu %lu %llu %u %u %u %u\n", |
1060 | MAJOR(part_devt(hd)), MINOR(part_devt(hd)), |
1061 | disk_name(gp, hd->partno, buf), |
1062 | part_stat_read(hd, ios[0]), |
1063 | part_stat_read(hd, merges[0]), |
1064 | (unsigned long long)part_stat_read(hd, sectors[0]), |
1065 | jiffies_to_msecs(part_stat_read(hd, ticks[0])), |
1066 | part_stat_read(hd, ios[1]), |
1067 | part_stat_read(hd, merges[1]), |
1068 | (unsigned long long)part_stat_read(hd, sectors[1]), |
1069 | jiffies_to_msecs(part_stat_read(hd, ticks[1])), |
1070 | part_in_flight(hd), |
1071 | jiffies_to_msecs(part_stat_read(hd, io_ticks)), |
1072 | jiffies_to_msecs(part_stat_read(hd, time_in_queue)) |
1073 | ); |
1074 | } |
1075 | disk_part_iter_exit(&piter); |
1076 | |
1077 | return 0; |
1078 | } |
1079 | |
1080 | static const struct seq_operations diskstats_op = { |
1081 | .start = disk_seqf_start, |
1082 | .next = disk_seqf_next, |
1083 | .stop = disk_seqf_stop, |
1084 | .show = diskstats_show |
1085 | }; |
1086 | |
1087 | static int diskstats_open(struct inode *inode, struct file *file) |
1088 | { |
1089 | return seq_open(file, &diskstats_op); |
1090 | } |
1091 | |
1092 | static const struct file_operations proc_diskstats_operations = { |
1093 | .open = diskstats_open, |
1094 | .read = seq_read, |
1095 | .llseek = seq_lseek, |
1096 | .release = seq_release, |
1097 | }; |
1098 | |
1099 | static int __init proc_genhd_init(void) |
1100 | { |
1101 | proc_create("diskstats", 0, NULL, &proc_diskstats_operations); |
1102 | proc_create("partitions", 0, NULL, &proc_partitions_operations); |
1103 | return 0; |
1104 | } |
1105 | module_init(proc_genhd_init); |
1106 | #endif /* CONFIG_PROC_FS */ |
1107 | |
1108 | static void media_change_notify_thread(struct work_struct *work) |
1109 | { |
1110 | struct gendisk *gd = container_of(work, struct gendisk, async_notify); |
1111 | char event[] = "MEDIA_CHANGE=1"; |
1112 | char *envp[] = { event, NULL }; |
1113 | |
1114 | /* |
1115 | * set enviroment vars to indicate which event this is for |
1116 | * so that user space will know to go check the media status. |
1117 | */ |
1118 | kobject_uevent_env(&disk_to_dev(gd)->kobj, KOBJ_CHANGE, envp); |
1119 | put_device(gd->driverfs_dev); |
1120 | } |
1121 | |
1122 | #if 0 |
1123 | void genhd_media_change_notify(struct gendisk *disk) |
1124 | { |
1125 | get_device(disk->driverfs_dev); |
1126 | schedule_work(&disk->async_notify); |
1127 | } |
1128 | EXPORT_SYMBOL_GPL(genhd_media_change_notify); |
1129 | #endif /* 0 */ |
1130 | |
1131 | dev_t blk_lookup_devt(const char *name, int partno) |
1132 | { |
1133 | dev_t devt = MKDEV(0, 0); |
1134 | struct class_dev_iter iter; |
1135 | struct device *dev; |
1136 | |
1137 | class_dev_iter_init(&iter, &block_class, NULL, &disk_type); |
1138 | while ((dev = class_dev_iter_next(&iter))) { |
1139 | struct gendisk *disk = dev_to_disk(dev); |
1140 | struct hd_struct *part; |
1141 | |
1142 | if (strcmp(dev_name(dev), name)) |
1143 | continue; |
1144 | |
1145 | if (partno < disk->minors) { |
1146 | /* We need to return the right devno, even |
1147 | * if the partition doesn't exist yet. |
1148 | */ |
1149 | devt = MKDEV(MAJOR(dev->devt), |
1150 | MINOR(dev->devt) + partno); |
1151 | break; |
1152 | } |
1153 | part = disk_get_part(disk, partno); |
1154 | if (part) { |
1155 | devt = part_devt(part); |
1156 | disk_put_part(part); |
1157 | break; |
1158 | } |
1159 | disk_put_part(part); |
1160 | } |
1161 | class_dev_iter_exit(&iter); |
1162 | return devt; |
1163 | } |
1164 | EXPORT_SYMBOL(blk_lookup_devt); |
1165 | |
1166 | struct gendisk *alloc_disk(int minors) |
1167 | { |
1168 | return alloc_disk_node(minors, -1); |
1169 | } |
1170 | EXPORT_SYMBOL(alloc_disk); |
1171 | |
1172 | struct gendisk *alloc_disk_node(int minors, int node_id) |
1173 | { |
1174 | struct gendisk *disk; |
1175 | |
1176 | disk = kmalloc_node(sizeof(struct gendisk), |
1177 | GFP_KERNEL | __GFP_ZERO, node_id); |
1178 | if (disk) { |
1179 | if (!init_part_stats(&disk->part0)) { |
1180 | kfree(disk); |
1181 | return NULL; |
1182 | } |
1183 | disk->node_id = node_id; |
1184 | if (disk_expand_part_tbl(disk, 0)) { |
1185 | free_part_stats(&disk->part0); |
1186 | kfree(disk); |
1187 | return NULL; |
1188 | } |
1189 | disk->part_tbl->part[0] = &disk->part0; |
1190 | |
1191 | disk->minors = minors; |
1192 | rand_initialize_disk(disk); |
1193 | disk_to_dev(disk)->class = &block_class; |
1194 | disk_to_dev(disk)->type = &disk_type; |
1195 | device_initialize(disk_to_dev(disk)); |
1196 | INIT_WORK(&disk->async_notify, |
1197 | media_change_notify_thread); |
1198 | } |
1199 | return disk; |
1200 | } |
1201 | EXPORT_SYMBOL(alloc_disk_node); |
1202 | |
1203 | struct kobject *get_disk(struct gendisk *disk) |
1204 | { |
1205 | struct module *owner; |
1206 | struct kobject *kobj; |
1207 | |
1208 | if (!disk->fops) |
1209 | return NULL; |
1210 | owner = disk->fops->owner; |
1211 | if (owner && !try_module_get(owner)) |
1212 | return NULL; |
1213 | kobj = kobject_get(&disk_to_dev(disk)->kobj); |
1214 | if (kobj == NULL) { |
1215 | module_put(owner); |
1216 | return NULL; |
1217 | } |
1218 | return kobj; |
1219 | |
1220 | } |
1221 | |
1222 | EXPORT_SYMBOL(get_disk); |
1223 | |
1224 | void put_disk(struct gendisk *disk) |
1225 | { |
1226 | if (disk) |
1227 | kobject_put(&disk_to_dev(disk)->kobj); |
1228 | } |
1229 | |
1230 | EXPORT_SYMBOL(put_disk); |
1231 | |
1232 | static void set_disk_ro_uevent(struct gendisk *gd, int ro) |
1233 | { |
1234 | char event[] = "DISK_RO=1"; |
1235 | char *envp[] = { event, NULL }; |
1236 | |
1237 | if (!ro) |
1238 | event[8] = '0'; |
1239 | kobject_uevent_env(&disk_to_dev(gd)->kobj, KOBJ_CHANGE, envp); |
1240 | } |
1241 | |
1242 | void set_device_ro(struct block_device *bdev, int flag) |
1243 | { |
1244 | bdev->bd_part->policy = flag; |
1245 | } |
1246 | |
1247 | EXPORT_SYMBOL(set_device_ro); |
1248 | |
1249 | void set_disk_ro(struct gendisk *disk, int flag) |
1250 | { |
1251 | struct disk_part_iter piter; |
1252 | struct hd_struct *part; |
1253 | |
1254 | if (disk->part0.policy != flag) { |
1255 | set_disk_ro_uevent(disk, flag); |
1256 | disk->part0.policy = flag; |
1257 | } |
1258 | |
1259 | disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY); |
1260 | while ((part = disk_part_iter_next(&piter))) |
1261 | part->policy = flag; |
1262 | disk_part_iter_exit(&piter); |
1263 | } |
1264 | |
1265 | EXPORT_SYMBOL(set_disk_ro); |
1266 | |
1267 | int bdev_read_only(struct block_device *bdev) |
1268 | { |
1269 | if (!bdev) |
1270 | return 0; |
1271 | return bdev->bd_part->policy; |
1272 | } |
1273 | |
1274 | EXPORT_SYMBOL(bdev_read_only); |
1275 | |
1276 | int invalidate_partition(struct gendisk *disk, int partno) |
1277 | { |
1278 | int res = 0; |
1279 | struct block_device *bdev = bdget_disk(disk, partno); |
1280 | if (bdev) { |
1281 | fsync_bdev(bdev); |
1282 | res = __invalidate_device(bdev); |
1283 | bdput(bdev); |
1284 | } |
1285 | return res; |
1286 | } |
1287 | |
1288 | EXPORT_SYMBOL(invalidate_partition); |
1289 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9