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 --- drivers/base/class.c | 7 +++++++ drivers/base/core.c | 20 ++++++++++-------- drivers/block/aoe/aoeblk.c | 51 +++++++++++++++++++++++----------------------- drivers/block/nbd.c | 15 ++++++++------ drivers/ide/ide-probe.c | 2 +- drivers/md/dm.c | 4 ++-- drivers/md/md.c | 8 ++++---- 7 files changed, 60 insertions(+), 47 deletions(-) (limited to 'drivers') diff --git a/drivers/base/class.c b/drivers/base/class.c index ba6745b0fd2..624b3316e93 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "base.h" #define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr) @@ -149,7 +150,13 @@ int class_register(struct class * cls) if (error) return error; +#ifdef CONFIG_SYSFS_DEPRECATED + /* let the block class directory show up in the root of sysfs */ + if (cls != &block_class) + cls->subsys.kobj.kset = class_kset; +#else cls->subsys.kobj.kset = class_kset; +#endif cls->subsys.kobj.ktype = &class_ktype; error = kset_register(&cls->subsys); diff --git a/drivers/base/core.c b/drivers/base/core.c index 13cae18936c..06e8738ab26 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -671,14 +671,15 @@ static int device_add_class_symlinks(struct device *dev) #ifdef CONFIG_SYSFS_DEPRECATED /* stacked class devices need a symlink in the class directory */ - if (dev->kobj.parent != &dev->class->subsys.kobj) { + if (dev->kobj.parent != &dev->class->subsys.kobj && + dev->type != &part_type) { error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj, dev->bus_id); if (error) goto out_subsys; } - if (dev->parent) { + if (dev->parent && dev->type != &part_type) { struct device *parent = dev->parent; char *class_name; @@ -707,10 +708,11 @@ static int device_add_class_symlinks(struct device *dev) return 0; out_device: - if (dev->parent) + if (dev->parent && dev->type != &part_type) sysfs_remove_link(&dev->kobj, "device"); out_busid: - if (dev->kobj.parent != &dev->class->subsys.kobj) + if (dev->kobj.parent != &dev->class->subsys.kobj && + dev->type != &part_type) sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); #else /* link in the class directory pointing to the device */ @@ -719,7 +721,7 @@ out_busid: if (error) goto out_subsys; - if (dev->parent) { + if (dev->parent && dev->type != &part_type) { error = sysfs_create_link(&dev->kobj, &dev->parent->kobj, "device"); if (error) @@ -743,7 +745,7 @@ static void device_remove_class_symlinks(struct device *dev) return; #ifdef CONFIG_SYSFS_DEPRECATED - if (dev->parent) { + if (dev->parent && dev->type != &part_type) { char *class_name; class_name = make_class_name(dev->class->name, &dev->kobj); @@ -754,10 +756,11 @@ static void device_remove_class_symlinks(struct device *dev) sysfs_remove_link(&dev->kobj, "device"); } - if (dev->kobj.parent != &dev->class->subsys.kobj) + if (dev->kobj.parent != &dev->class->subsys.kobj && + dev->type != &part_type) sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); #else - if (dev->parent) + if (dev->parent && dev->type != &part_type) sysfs_remove_link(&dev->kobj, "device"); sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id); @@ -925,6 +928,7 @@ struct device * get_device(struct device * dev) */ void put_device(struct device * dev) { + /* might_sleep(); */ if (dev) kobject_put(&dev->kobj); } diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index ad00b3d9471..826d12381e2 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -15,8 +15,10 @@ static struct kmem_cache *buf_pool_cache; -static ssize_t aoedisk_show_state(struct gendisk * disk, char *page) +static ssize_t aoedisk_show_state(struct device *dev, + struct device_attribute *attr, char *page) { + struct gendisk *disk = dev_to_disk(dev); struct aoedev *d = disk->private_data; return snprintf(page, PAGE_SIZE, @@ -26,50 +28,47 @@ static ssize_t aoedisk_show_state(struct gendisk * disk, char *page) (d->nopen && !(d->flags & DEVFL_UP)) ? ",closewait" : ""); /* I'd rather see nopen exported so we can ditch closewait */ } -static ssize_t aoedisk_show_mac(struct gendisk * disk, char *page) +static ssize_t aoedisk_show_mac(struct device *dev, + struct device_attribute *attr, char *page) { + struct gendisk *disk = dev_to_disk(dev); struct aoedev *d = disk->private_data; return snprintf(page, PAGE_SIZE, "%012llx\n", (unsigned long long)mac_addr(d->addr)); } -static ssize_t aoedisk_show_netif(struct gendisk * disk, char *page) +static ssize_t aoedisk_show_netif(struct device *dev, + struct device_attribute *attr, char *page) { + struct gendisk *disk = dev_to_disk(dev); struct aoedev *d = disk->private_data; return snprintf(page, PAGE_SIZE, "%s\n", d->ifp->name); } /* firmware version */ -static ssize_t aoedisk_show_fwver(struct gendisk * disk, char *page) +static ssize_t aoedisk_show_fwver(struct device *dev, + struct device_attribute *attr, char *page) { + struct gendisk *disk = dev_to_disk(dev); struct aoedev *d = disk->private_data; return snprintf(page, PAGE_SIZE, "0x%04x\n", (unsigned int) d->fw_ver); } -static struct disk_attribute disk_attr_state = { - .attr = {.name = "state", .mode = S_IRUGO }, - .show = aoedisk_show_state -}; -static struct disk_attribute disk_attr_mac = { - .attr = {.name = "mac", .mode = S_IRUGO }, - .show = aoedisk_show_mac -}; -static struct disk_attribute disk_attr_netif = { - .attr = {.name = "netif", .mode = S_IRUGO }, - .show = aoedisk_show_netif -}; -static struct disk_attribute disk_attr_fwver = { - .attr = {.name = "firmware-version", .mode = S_IRUGO }, - .show = aoedisk_show_fwver +static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL); +static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL); +static DEVICE_ATTR(netif, S_IRUGO, aoedisk_show_netif, NULL); +static struct device_attribute dev_attr_firmware_version = { + .attr = { .name = "firmware-version", .mode = S_IRUGO, .owner = THIS_MODULE }, + .show = aoedisk_show_fwver, }; static struct attribute *aoe_attrs[] = { - &disk_attr_state.attr, - &disk_attr_mac.attr, - &disk_attr_netif.attr, - &disk_attr_fwver.attr, - NULL + &dev_attr_state.attr, + &dev_attr_mac.attr, + &dev_attr_netif.attr, + &dev_attr_firmware_version.attr, + NULL, }; static const struct attribute_group attr_group = { @@ -79,12 +78,12 @@ static const struct attribute_group attr_group = { static int aoedisk_add_sysfs(struct aoedev *d) { - return sysfs_create_group(&d->gd->kobj, &attr_group); + return sysfs_create_group(&d->gd->dev.kobj, &attr_group); } void aoedisk_rm_sysfs(struct aoedev *d) { - sysfs_remove_group(&d->gd->kobj, &attr_group); + sysfs_remove_group(&d->gd->dev.kobj, &attr_group); } static int diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b4c0888aedc..ba9b17e507e 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -375,14 +375,17 @@ harderror: return NULL; } -static ssize_t pid_show(struct gendisk *disk, char *page) +static ssize_t pid_show(struct device *dev, + struct device_attribute *attr, char *buf) { - return sprintf(page, "%ld\n", + struct gendisk *disk = dev_to_disk(dev); + + return sprintf(buf, "%ld\n", (long) ((struct nbd_device *)disk->private_data)->pid); } -static struct disk_attribute pid_attr = { - .attr = { .name = "pid", .mode = S_IRUGO }, +static struct device_attribute pid_attr = { + .attr = { .name = "pid", .mode = S_IRUGO, .owner = THIS_MODULE }, .show = pid_show, }; @@ -394,7 +397,7 @@ static int nbd_do_it(struct nbd_device *lo) BUG_ON(lo->magic != LO_MAGIC); lo->pid = current->pid; - ret = sysfs_create_file(&lo->disk->kobj, &pid_attr.attr); + ret = sysfs_create_file(&lo->disk->dev.kobj, &pid_attr.attr); if (ret) { printk(KERN_ERR "nbd: sysfs_create_file failed!"); return ret; @@ -403,7 +406,7 @@ static int nbd_do_it(struct nbd_device *lo) while ((req = nbd_read_stat(lo)) != NULL) nbd_end_request(req); - sysfs_remove_file(&lo->disk->kobj, &pid_attr.attr); + sysfs_remove_file(&lo->disk->dev.kobj, &pid_attr.attr); return 0; } diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 2994523be7b..0cb3d2bb3ab 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -1173,7 +1173,7 @@ static struct kobject *exact_match(dev_t dev, int *part, void *data) { struct gendisk *p = data; *part &= (1 << PARTN_BITS) - 1; - return &p->kobj; + return &p->dev.kobj; } static int exact_lock(dev_t dev, void *data) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 88c0fd65782..f2d24eb3208 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1109,7 +1109,7 @@ static void event_callback(void *context) list_splice_init(&md->uevent_list, &uevents); spin_unlock_irqrestore(&md->uevent_lock, flags); - dm_send_uevents(&uevents, &md->disk->kobj); + dm_send_uevents(&uevents, &md->disk->dev.kobj); atomic_inc(&md->event_nr); wake_up(&md->eventq); @@ -1530,7 +1530,7 @@ out: *---------------------------------------------------------------*/ void dm_kobject_uevent(struct mapped_device *md) { - kobject_uevent(&md->disk->kobj, KOBJ_CHANGE); + kobject_uevent(&md->disk->dev.kobj, KOBJ_CHANGE); } uint32_t dm_next_uevent_seq(struct mapped_device *md) diff --git a/drivers/md/md.c b/drivers/md/md.c index c5030863d00..f79efb35921 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1396,9 +1396,9 @@ static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev) goto fail; if (rdev->bdev->bd_part) - ko = &rdev->bdev->bd_part->kobj; + ko = &rdev->bdev->bd_part->dev.kobj; else - ko = &rdev->bdev->bd_disk->kobj; + ko = &rdev->bdev->bd_disk->dev.kobj; if ((err = sysfs_create_link(&rdev->kobj, ko, "block"))) { kobject_del(&rdev->kobj); goto fail; @@ -3083,7 +3083,7 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data) add_disk(disk); mddev->gendisk = disk; mutex_unlock(&disks_mutex); - error = kobject_init_and_add(&mddev->kobj, &md_ktype, &disk->kobj, + error = kobject_init_and_add(&mddev->kobj, &md_ktype, &disk->dev.kobj, "%s", "md"); if (error) printk(KERN_WARNING "md: cannot register %s/md - name in use\n", @@ -3361,7 +3361,7 @@ static int do_md_run(mddev_t * mddev) mddev->changed = 1; md_new_event(mddev); - kobject_uevent(&mddev->gendisk->kobj, KOBJ_CHANGE); + kobject_uevent(&mddev->gendisk->dev.kobj, KOBJ_CHANGE); return 0; } -- cgit v1.2.3