From 3514faca19a6fdc209734431c509631ea92b094e Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 16 Oct 2007 10:11:44 -0600 Subject: kobject: remove struct kobj_type from struct kset We don't need a "default" ktype for a kset. We should set this explicitly every time for each kset. This change is needed so that we can make ksets dynamic, and cleans up one of the odd, undocumented assumption that the kset/kobject/ktype model has. This patch is based on a lot of help from Kay Sievers. Nasty bug in the block code was found by Dave Young Cc: Kay Sievers Cc: Dave Young Signed-off-by: Greg Kroah-Hartman --- block/genhd.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'block/genhd.c') diff --git a/block/genhd.c b/block/genhd.c index f2ac914160d1..32227b7ecd17 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -584,7 +584,7 @@ static struct kset_uevent_ops block_uevent_ops = { .uevent = block_uevent, }; -decl_subsys(block, &ktype_block, &block_uevent_ops); +decl_subsys(block, &block_uevent_ops); /* * aggregate disk stat collector. Uses the same stats that the sysfs @@ -721,7 +721,8 @@ struct gendisk *alloc_disk_node(int minors, int node_id) } } disk->minors = minors; - kobj_set_kset_s(disk,block_subsys); + disk->kobj.kset = &block_subsys; + disk->kobj.ktype = &ktype_block; kobject_init(&disk->kobj); rand_initialize_disk(disk); INIT_WORK(&disk->async_notify, -- cgit v1.2.2 From 830d3cfb16728e2496edc2985ad8f68025135e37 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 6 Nov 2007 10:36:58 -0800 Subject: kset: convert block_subsys to use kset_create Dynamically create the kset instead of declaring it statically. We also rename block_subsys to block_kset to catch all users of this symbol with a build error instead of an easy-to-ignore build warning. Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- block/genhd.c | 34 ++++++++++++++++------------------ 1 file changed, 16 insertions(+), 18 deletions(-) (limited to 'block/genhd.c') diff --git a/block/genhd.c b/block/genhd.c index 32227b7ecd17..69aa7389d484 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -17,7 +17,8 @@ #include #include -struct kset block_subsys; +struct kset *block_kset; +static struct kset_uevent_ops block_uevent_ops; static DEFINE_MUTEX(block_subsys_lock); /* @@ -221,7 +222,7 @@ void __init printk_all_partitions(void) mutex_lock(&block_subsys_lock); /* For each block device... */ - list_for_each_entry(sgp, &block_subsys.list, kobj.entry) { + list_for_each_entry(sgp, &block_kset->list, kobj.entry) { char buf[BDEVNAME_SIZE]; /* * Don't show empty devices or things that have been surpressed @@ -270,7 +271,7 @@ static void *part_start(struct seq_file *part, loff_t *pos) loff_t l = *pos; mutex_lock(&block_subsys_lock); - list_for_each(p, &block_subsys.list) + list_for_each(p, &block_kset->list) if (!l--) return list_entry(p, struct gendisk, kobj.entry); return NULL; @@ -280,7 +281,7 @@ static void *part_next(struct seq_file *part, void *v, loff_t *pos) { struct list_head *p = ((struct gendisk *)v)->kobj.entry.next; ++*pos; - return p==&block_subsys.list ? NULL : + return p==&block_kset->list ? NULL : list_entry(p, struct gendisk, kobj.entry); } @@ -295,7 +296,7 @@ static int show_partition(struct seq_file *part, void *v) int n; char buf[BDEVNAME_SIZE]; - if (&sgp->kobj.entry == block_subsys.list.next) + if (&sgp->kobj.entry == block_kset->list.next) seq_puts(part, "major minor #blocks name\n\n"); /* Don't show non-partitionable removeable devices or empty devices */ @@ -345,15 +346,14 @@ static struct kobject *base_probe(dev_t dev, int *part, void *data) static int __init genhd_device_init(void) { - int err; - bdev_map = kobj_map_init(base_probe, &block_subsys_lock); blk_dev_init(); - err = subsystem_register(&block_subsys); - if (err < 0) - printk(KERN_WARNING "%s: subsystem_register error: %d\n", - __FUNCTION__, err); - return err; + block_kset = kset_create_and_add("block", &block_uevent_ops, NULL); + if (!block_kset) { + printk(KERN_WARNING "%s: kset_create error\n", __FUNCTION__); + return -ENOMEM; + } + return 0; } subsys_initcall(genhd_device_init); @@ -584,8 +584,6 @@ static struct kset_uevent_ops block_uevent_ops = { .uevent = block_uevent, }; -decl_subsys(block, &block_uevent_ops); - /* * aggregate disk stat collector. Uses the same stats that the sysfs * entries do, above, but makes them available through one seq_file. @@ -603,7 +601,7 @@ static void *diskstats_start(struct seq_file *part, loff_t *pos) struct list_head *p; mutex_lock(&block_subsys_lock); - list_for_each(p, &block_subsys.list) + list_for_each(p, &block_kset->list) if (!k--) return list_entry(p, struct gendisk, kobj.entry); return NULL; @@ -613,7 +611,7 @@ static void *diskstats_next(struct seq_file *part, void *v, loff_t *pos) { struct list_head *p = ((struct gendisk *)v)->kobj.entry.next; ++*pos; - return p==&block_subsys.list ? NULL : + return p==&block_kset->list ? NULL : list_entry(p, struct gendisk, kobj.entry); } @@ -629,7 +627,7 @@ static int diskstats_show(struct seq_file *s, void *v) int n = 0; /* - if (&sgp->kobj.entry == block_subsys.kset.list.next) + if (&sgp->kobj.entry == block_kset->list.next) seq_puts(s, "major minor name" " rio rmerge rsect ruse wio wmerge " "wsect wuse running use aveq" @@ -721,7 +719,7 @@ struct gendisk *alloc_disk_node(int minors, int node_id) } } disk->minors = minors; - disk->kobj.kset = &block_subsys; + disk->kobj.kset = block_kset; disk->kobj.ktype = &ktype_block; kobject_init(&disk->kobj); rand_initialize_disk(disk); -- cgit v1.2.2 From edfaa7c36574f1bf09c65ad602412db9da5f96bf Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Mon, 21 May 2007 22:08:01 +0200 Subject: Driver core: convert block from raw kobjects to core devices This moves the block devices to /sys/class/block. It will create a flat list of all block devices, with the disks and partitions in one directory. For compatibility /sys/block is created and contains symlinks to the disks. /sys/class/block |-- sda -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda |-- sda1 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1 |-- sda10 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda10 |-- sda5 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda5 |-- sda6 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda6 |-- sda7 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda7 |-- sda8 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda8 |-- sda9 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda9 `-- sr0 -> ../../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0 /sys/block/ |-- sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda `-- sr0 -> ../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0 Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- block/genhd.c | 416 ++++++++++++++++++++++++++-------------------------------- 1 file changed, 183 insertions(+), 233 deletions(-) (limited to 'block/genhd.c') diff --git a/block/genhd.c b/block/genhd.c index 69aa7389d484..5e4ab4b37d9f 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -17,9 +17,10 @@ #include #include -struct kset *block_kset; -static struct kset_uevent_ops block_uevent_ops; -static DEFINE_MUTEX(block_subsys_lock); +static DEFINE_MUTEX(block_class_lock); +#ifndef CONFIG_SYSFS_DEPRECATED +struct kobject *block_depr; +#endif /* * Can be deleted altogether. Later. @@ -38,19 +39,17 @@ static inline int major_to_index(int major) } #ifdef CONFIG_PROC_FS - void blkdev_show(struct seq_file *f, off_t offset) { struct blk_major_name *dp; if (offset < BLKDEV_MAJOR_HASH_SIZE) { - mutex_lock(&block_subsys_lock); + mutex_lock(&block_class_lock); for (dp = major_names[offset]; dp; dp = dp->next) seq_printf(f, "%3d %s\n", dp->major, dp->name); - mutex_unlock(&block_subsys_lock); + mutex_unlock(&block_class_lock); } } - #endif /* CONFIG_PROC_FS */ int register_blkdev(unsigned int major, const char *name) @@ -58,7 +57,7 @@ int register_blkdev(unsigned int major, const char *name) struct blk_major_name **n, *p; int index, ret = 0; - mutex_lock(&block_subsys_lock); + mutex_lock(&block_class_lock); /* temporary */ if (major == 0) { @@ -103,7 +102,7 @@ int register_blkdev(unsigned int major, const char *name) kfree(p); } out: - mutex_unlock(&block_subsys_lock); + mutex_unlock(&block_class_lock); return ret; } @@ -115,7 +114,7 @@ void unregister_blkdev(unsigned int major, const char *name) struct blk_major_name *p = NULL; int index = major_to_index(major); - mutex_lock(&block_subsys_lock); + mutex_lock(&block_class_lock); for (n = &major_names[index]; *n; n = &(*n)->next) if ((*n)->major == major) break; @@ -125,7 +124,7 @@ void unregister_blkdev(unsigned int major, const char *name) p = *n; *n = p->next; } - mutex_unlock(&block_subsys_lock); + mutex_unlock(&block_class_lock); kfree(p); } @@ -138,29 +137,30 @@ static struct kobj_map *bdev_map; * range must be nonzero * The hash chain is sorted on range, so that subranges can override. */ -void blk_register_region(dev_t dev, unsigned long range, struct module *module, +void blk_register_region(dev_t devt, unsigned long range, struct module *module, struct kobject *(*probe)(dev_t, int *, void *), int (*lock)(dev_t, void *), void *data) { - kobj_map(bdev_map, dev, range, module, probe, lock, data); + kobj_map(bdev_map, devt, range, module, probe, lock, data); } EXPORT_SYMBOL(blk_register_region); -void blk_unregister_region(dev_t dev, unsigned long range) +void blk_unregister_region(dev_t devt, unsigned long range) { - kobj_unmap(bdev_map, dev, range); + kobj_unmap(bdev_map, devt, range); } EXPORT_SYMBOL(blk_unregister_region); -static struct kobject *exact_match(dev_t dev, int *part, void *data) +static struct kobject *exact_match(dev_t devt, int *part, void *data) { struct gendisk *p = data; - return &p->kobj; + + return &p->dev.kobj; } -static int exact_lock(dev_t dev, void *data) +static int exact_lock(dev_t devt, void *data) { struct gendisk *p = data; @@ -195,8 +195,6 @@ void unlink_gendisk(struct gendisk *disk) disk->minors); } -#define to_disk(obj) container_of(obj,struct gendisk,kobj) - /** * get_gendisk - get partitioning information for a given device * @dev: device to get partitioning information for @@ -204,10 +202,12 @@ void unlink_gendisk(struct gendisk *disk) * This function gets the structure containing partitioning * information for the given device @dev. */ -struct gendisk *get_gendisk(dev_t dev, int *part) +struct gendisk *get_gendisk(dev_t devt, int *part) { - struct kobject *kobj = kobj_lookup(bdev_map, dev, part); - return kobj ? to_disk(kobj) : NULL; + struct kobject *kobj = kobj_lookup(bdev_map, devt, part); + struct device *dev = kobj_to_dev(kobj); + + return kobj ? dev_to_disk(dev) : NULL; } /* @@ -217,13 +217,17 @@ struct gendisk *get_gendisk(dev_t dev, int *part) */ void __init printk_all_partitions(void) { - int n; + struct device *dev; struct gendisk *sgp; + char buf[BDEVNAME_SIZE]; + int n; - mutex_lock(&block_subsys_lock); + mutex_lock(&block_class_lock); /* For each block device... */ - list_for_each_entry(sgp, &block_kset->list, kobj.entry) { - char buf[BDEVNAME_SIZE]; + list_for_each_entry(dev, &block_class.devices, node) { + if (dev->type != &disk_type) + continue; + sgp = dev_to_disk(dev); /* * Don't show empty devices or things that have been surpressed */ @@ -256,38 +260,46 @@ void __init printk_all_partitions(void) sgp->major, n + 1 + sgp->first_minor, (unsigned long long)sgp->part[n]->nr_sects >> 1, disk_name(sgp, n + 1, buf)); - } /* partition subloop */ - } /* Block device loop */ + } + } - mutex_unlock(&block_subsys_lock); - return; + mutex_unlock(&block_class_lock); } #ifdef CONFIG_PROC_FS /* iterator */ static void *part_start(struct seq_file *part, loff_t *pos) { - struct list_head *p; - loff_t l = *pos; + loff_t k = *pos; + struct device *dev; - mutex_lock(&block_subsys_lock); - list_for_each(p, &block_kset->list) - if (!l--) - return list_entry(p, struct gendisk, kobj.entry); + mutex_lock(&block_class_lock); + list_for_each_entry(dev, &block_class.devices, node) { + if (dev->type != &disk_type) + continue; + if (!k--) + return dev_to_disk(dev); + } return NULL; } static void *part_next(struct seq_file *part, void *v, loff_t *pos) { - struct list_head *p = ((struct gendisk *)v)->kobj.entry.next; + struct gendisk *gp = v; + struct device *dev; ++*pos; - return p==&block_kset->list ? NULL : - list_entry(p, struct gendisk, kobj.entry); + list_for_each_entry(dev, &gp->dev.node, node) { + if (&dev->node == &block_class.devices) + return NULL; + if (dev->type == &disk_type) + return dev_to_disk(dev); + } + return NULL; } static void part_stop(struct seq_file *part, void *v) { - mutex_unlock(&block_subsys_lock); + mutex_unlock(&block_class_lock); } static int show_partition(struct seq_file *part, void *v) @@ -296,7 +308,7 @@ static int show_partition(struct seq_file *part, void *v) int n; char buf[BDEVNAME_SIZE]; - if (&sgp->kobj.entry == block_kset->list.next) + if (&sgp->dev.node == block_class.devices.next) seq_puts(part, "major minor #blocks name\n\n"); /* Don't show non-partitionable removeable devices or empty devices */ @@ -326,109 +338,81 @@ static int show_partition(struct seq_file *part, void *v) } struct seq_operations partitions_op = { - .start =part_start, - .next = part_next, - .stop = part_stop, - .show = show_partition + .start = part_start, + .next = part_next, + .stop = part_stop, + .show = show_partition }; #endif extern int blk_dev_init(void); -static struct kobject *base_probe(dev_t dev, int *part, void *data) +static struct kobject *base_probe(dev_t devt, int *part, void *data) { - if (request_module("block-major-%d-%d", MAJOR(dev), MINOR(dev)) > 0) + if (request_module("block-major-%d-%d", MAJOR(devt), MINOR(devt)) > 0) /* Make old-style 2.4 aliases work */ - request_module("block-major-%d", MAJOR(dev)); + request_module("block-major-%d", MAJOR(devt)); return NULL; } static int __init genhd_device_init(void) { - bdev_map = kobj_map_init(base_probe, &block_subsys_lock); + class_register(&block_class); + bdev_map = kobj_map_init(base_probe, &block_class_lock); blk_dev_init(); - block_kset = kset_create_and_add("block", &block_uevent_ops, NULL); - if (!block_kset) { - printk(KERN_WARNING "%s: kset_create error\n", __FUNCTION__); - return -ENOMEM; - } + +#ifndef CONFIG_SYSFS_DEPRECATED + /* create top-level block dir */ + block_depr = kobject_create_and_add("block", NULL); +#endif return 0; } subsys_initcall(genhd_device_init); - - -/* - * kobject & sysfs bindings for block devices - */ -static ssize_t disk_attr_show(struct kobject *kobj, struct attribute *attr, - char *page) +static ssize_t disk_range_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct gendisk *disk = to_disk(kobj); - struct disk_attribute *disk_attr = - container_of(attr,struct disk_attribute,attr); - ssize_t ret = -EIO; + struct gendisk *disk = dev_to_disk(dev); - if (disk_attr->show) - ret = disk_attr->show(disk,page); - return ret; + return sprintf(buf, "%d\n", disk->minors); } -static ssize_t disk_attr_store(struct kobject * kobj, struct attribute * attr, - const char *page, size_t count) +static ssize_t disk_removable_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct gendisk *disk = to_disk(kobj); - struct disk_attribute *disk_attr = - container_of(attr,struct disk_attribute,attr); - ssize_t ret = 0; + struct gendisk *disk = dev_to_disk(dev); - if (disk_attr->store) - ret = disk_attr->store(disk, page, count); - return ret; + return sprintf(buf, "%d\n", + (disk->flags & GENHD_FL_REMOVABLE ? 1 : 0)); } -static struct sysfs_ops disk_sysfs_ops = { - .show = &disk_attr_show, - .store = &disk_attr_store, -}; - -static ssize_t disk_uevent_store(struct gendisk * disk, - const char *buf, size_t count) +static ssize_t disk_size_show(struct device *dev, + struct device_attribute *attr, char *buf) { - kobject_uevent(&disk->kobj, KOBJ_ADD); - return count; -} -static ssize_t disk_dev_read(struct gendisk * disk, char *page) -{ - dev_t base = MKDEV(disk->major, disk->first_minor); - return print_dev_t(page, base); -} -static ssize_t disk_range_read(struct gendisk * disk, char *page) -{ - return sprintf(page, "%d\n", disk->minors); -} -static ssize_t disk_removable_read(struct gendisk * disk, char *page) -{ - return sprintf(page, "%d\n", - (disk->flags & GENHD_FL_REMOVABLE ? 1 : 0)); + struct gendisk *disk = dev_to_disk(dev); + return sprintf(buf, "%llu\n", (unsigned long long)get_capacity(disk)); } -static ssize_t disk_size_read(struct gendisk * disk, char *page) -{ - return sprintf(page, "%llu\n", (unsigned long long)get_capacity(disk)); -} -static ssize_t disk_capability_read(struct gendisk *disk, char *page) + +static ssize_t disk_capability_show(struct device *dev, + struct device_attribute *attr, char *buf) { - return sprintf(page, "%x\n", disk->flags); + struct gendisk *disk = dev_to_disk(dev); + + return sprintf(buf, "%x\n", disk->flags); } -static ssize_t disk_stats_read(struct gendisk * disk, char *page) + +static ssize_t disk_stat_show(struct device *dev, + struct device_attribute *attr, char *buf) { + struct gendisk *disk = dev_to_disk(dev); + preempt_disable(); disk_round_stats(disk); preempt_enable(); - return sprintf(page, + return sprintf(buf, "%8lu %8lu %8llu %8u " "%8lu %8lu %8llu %8u " "%8u %8u %8u" @@ -445,40 +429,21 @@ static ssize_t disk_stats_read(struct gendisk * disk, char *page) jiffies_to_msecs(disk_stat_read(disk, io_ticks)), jiffies_to_msecs(disk_stat_read(disk, time_in_queue))); } -static struct disk_attribute disk_attr_uevent = { - .attr = {.name = "uevent", .mode = S_IWUSR }, - .store = disk_uevent_store -}; -static struct disk_attribute disk_attr_dev = { - .attr = {.name = "dev", .mode = S_IRUGO }, - .show = disk_dev_read -}; -static struct disk_attribute disk_attr_range = { - .attr = {.name = "range", .mode = S_IRUGO }, - .show = disk_range_read -}; -static struct disk_attribute disk_attr_removable = { - .attr = {.name = "removable", .mode = S_IRUGO }, - .show = disk_removable_read -}; -static struct disk_attribute disk_attr_size = { - .attr = {.name = "size", .mode = S_IRUGO }, - .show = disk_size_read -}; -static struct disk_attribute disk_attr_capability = { - .attr = {.name = "capability", .mode = S_IRUGO }, - .show = disk_capability_read -}; -static struct disk_attribute disk_attr_stat = { - .attr = {.name = "stat", .mode = S_IRUGO }, - .show = disk_stats_read -}; #ifdef CONFIG_FAIL_MAKE_REQUEST +static ssize_t disk_fail_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gendisk *disk = dev_to_disk(dev); + + return sprintf(buf, "%d\n", disk->flags & GENHD_FL_FAIL ? 1 : 0); +} -static ssize_t disk_fail_store(struct gendisk * disk, +static ssize_t disk_fail_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) { + struct gendisk *disk = dev_to_disk(dev); int i; if (count > 0 && sscanf(buf, "%d", &i) > 0) { @@ -490,134 +455,100 @@ static ssize_t disk_fail_store(struct gendisk * disk, return count; } -static ssize_t disk_fail_read(struct gendisk * disk, char *page) -{ - return sprintf(page, "%d\n", disk->flags & GENHD_FL_FAIL ? 1 : 0); -} -static struct disk_attribute disk_attr_fail = { - .attr = {.name = "make-it-fail", .mode = S_IRUGO | S_IWUSR }, - .store = disk_fail_store, - .show = disk_fail_read -}; #endif -static struct attribute * default_attrs[] = { - &disk_attr_uevent.attr, - &disk_attr_dev.attr, - &disk_attr_range.attr, - &disk_attr_removable.attr, - &disk_attr_size.attr, - &disk_attr_stat.attr, - &disk_attr_capability.attr, +static DEVICE_ATTR(range, S_IRUGO, disk_range_show, NULL); +static DEVICE_ATTR(removable, S_IRUGO, disk_removable_show, NULL); +static DEVICE_ATTR(size, S_IRUGO, disk_size_show, NULL); +static DEVICE_ATTR(capability, S_IRUGO, disk_capability_show, NULL); +static DEVICE_ATTR(stat, S_IRUGO, disk_stat_show, NULL); #ifdef CONFIG_FAIL_MAKE_REQUEST - &disk_attr_fail.attr, +static struct device_attribute dev_attr_fail = + __ATTR(make-it-fail, S_IRUGO|S_IWUSR, disk_fail_show, disk_fail_store); #endif - NULL, + +static struct attribute *disk_attrs[] = { + &dev_attr_range.attr, + &dev_attr_removable.attr, + &dev_attr_size.attr, + &dev_attr_capability.attr, + &dev_attr_stat.attr, +#ifdef CONFIG_FAIL_MAKE_REQUEST + &dev_attr_fail.attr, +#endif + NULL +}; + +static struct attribute_group disk_attr_group = { + .attrs = disk_attrs, +}; + +static struct attribute_group *disk_attr_groups[] = { + &disk_attr_group, + NULL }; -static void disk_release(struct kobject * kobj) +static void disk_release(struct device *dev) { - struct gendisk *disk = to_disk(kobj); + struct gendisk *disk = dev_to_disk(dev); + kfree(disk->random); kfree(disk->part); free_disk_stats(disk); kfree(disk); } - -static struct kobj_type ktype_block = { - .release = disk_release, - .sysfs_ops = &disk_sysfs_ops, - .default_attrs = default_attrs, +struct class block_class = { + .name = "block", }; -extern struct kobj_type ktype_part; - -static int block_uevent_filter(struct kset *kset, struct kobject *kobj) -{ - struct kobj_type *ktype = get_ktype(kobj); - - return ((ktype == &ktype_block) || (ktype == &ktype_part)); -} - -static int block_uevent(struct kset *kset, struct kobject *kobj, - struct kobj_uevent_env *env) -{ - struct kobj_type *ktype = get_ktype(kobj); - struct device *physdev; - struct gendisk *disk; - struct hd_struct *part; - - if (ktype == &ktype_block) { - disk = container_of(kobj, struct gendisk, kobj); - add_uevent_var(env, "MINOR=%u", disk->first_minor); - } else if (ktype == &ktype_part) { - disk = container_of(kobj->parent, struct gendisk, kobj); - part = container_of(kobj, struct hd_struct, kobj); - add_uevent_var(env, "MINOR=%u", - disk->first_minor + part->partno); - } else - return 0; - - add_uevent_var(env, "MAJOR=%u", disk->major); - - /* add physical device, backing this device */ - physdev = disk->driverfs_dev; - if (physdev) { - char *path = kobject_get_path(&physdev->kobj, GFP_KERNEL); - - add_uevent_var(env, "PHYSDEVPATH=%s", path); - kfree(path); - - if (physdev->bus) - add_uevent_var(env, "PHYSDEVBUS=%s", physdev->bus->name); - - if (physdev->driver) - add_uevent_var(env, physdev->driver->name); - } - - return 0; -} - -static struct kset_uevent_ops block_uevent_ops = { - .filter = block_uevent_filter, - .uevent = block_uevent, +struct device_type disk_type = { + .name = "disk", + .groups = disk_attr_groups, + .release = disk_release, }; /* * aggregate disk stat collector. Uses the same stats that the sysfs * entries do, above, but makes them available through one seq_file. - * Watching a few disks may be efficient through sysfs, but watching - * all of them will be more efficient through this interface. * * The output looks suspiciously like /proc/partitions with a bunch of * extra fields. */ -/* iterator */ static void *diskstats_start(struct seq_file *part, loff_t *pos) { loff_t k = *pos; - struct list_head *p; + struct device *dev; - mutex_lock(&block_subsys_lock); - list_for_each(p, &block_kset->list) + mutex_lock(&block_class_lock); + list_for_each_entry(dev, &block_class.devices, node) { + if (dev->type != &disk_type) + continue; if (!k--) - return list_entry(p, struct gendisk, kobj.entry); + return dev_to_disk(dev); + } return NULL; } static void *diskstats_next(struct seq_file *part, void *v, loff_t *pos) { - struct list_head *p = ((struct gendisk *)v)->kobj.entry.next; + struct gendisk *gp = v; + struct device *dev; + ++*pos; - return p==&block_kset->list ? NULL : - list_entry(p, struct gendisk, kobj.entry); + list_for_each_entry(dev, &gp->dev.node, node) { + if (&dev->node == &block_class.devices) + return NULL; + if (dev->type == &disk_type) + return dev_to_disk(dev); + } + return NULL; } static void diskstats_stop(struct seq_file *part, void *v) { - mutex_unlock(&block_subsys_lock); + mutex_unlock(&block_class_lock); } static int diskstats_show(struct seq_file *s, void *v) @@ -627,7 +558,7 @@ static int diskstats_show(struct seq_file *s, void *v) int n = 0; /* - if (&sgp->kobj.entry == block_kset->list.next) + if (&gp->dev.kobj.entry == block_class.devices.next) seq_puts(s, "major minor name" " rio rmerge rsect ruse wio wmerge " "wsect wuse running use aveq" @@ -681,7 +612,7 @@ static void media_change_notify_thread(struct work_struct *work) * set enviroment vars to indicate which event this is for * so that user space will know to go check the media status. */ - kobject_uevent_env(&gd->kobj, KOBJ_CHANGE, envp); + kobject_uevent_env(&gd->dev.kobj, KOBJ_CHANGE, envp); put_device(gd->driverfs_dev); } @@ -692,6 +623,25 @@ void genhd_media_change_notify(struct gendisk *disk) } EXPORT_SYMBOL_GPL(genhd_media_change_notify); +dev_t blk_lookup_devt(const char *name) +{ + struct device *dev; + dev_t devt = MKDEV(0, 0); + + mutex_lock(&block_class_lock); + list_for_each_entry(dev, &block_class.devices, node) { + if (strcmp(dev->bus_id, name) == 0) { + devt = dev->devt; + break; + } + } + mutex_unlock(&block_class_lock); + + return devt; +} + +EXPORT_SYMBOL(blk_lookup_devt); + struct gendisk *alloc_disk(int minors) { return alloc_disk_node(minors, -1); @@ -719,10 +669,10 @@ struct gendisk *alloc_disk_node(int minors, int node_id) } } disk->minors = minors; - disk->kobj.kset = block_kset; - disk->kobj.ktype = &ktype_block; - kobject_init(&disk->kobj); rand_initialize_disk(disk); + disk->dev.class = &block_class; + disk->dev.type = &disk_type; + device_initialize(&disk->dev); INIT_WORK(&disk->async_notify, media_change_notify_thread); } @@ -742,7 +692,7 @@ struct kobject *get_disk(struct gendisk *disk) owner = disk->fops->owner; if (owner && !try_module_get(owner)) return NULL; - kobj = kobject_get(&disk->kobj); + kobj = kobject_get(&disk->dev.kobj); if (kobj == NULL) { module_put(owner); return NULL; @@ -756,7 +706,7 @@ EXPORT_SYMBOL(get_disk); void put_disk(struct gendisk *disk) { if (disk) - kobject_put(&disk->kobj); + kobject_put(&disk->dev.kobj); } EXPORT_SYMBOL(put_disk); -- cgit v1.2.2