diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 17:02:07 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 17:02:07 -0800 |
commit | 40d7ee5d162203b40b5f4fbb312ab016edddb97f (patch) | |
tree | 432db33df85f7f244676127a189a828dfbf2877b /lib | |
parent | 5fec8bdbf9a1c4df4ad3f20e52aa2d8caed490c8 (diff) | |
parent | b8ac9fc0e8cda9f9776019c5b0464b0c6d2d4c90 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (60 commits)
uio: make uio_info's name and version const
UIO: Documentation for UIO ioport info handling
UIO: Pass information about ioports to userspace (V2)
UIO: uio_pdrv_genirq: allow custom irq_flags
UIO: use pci_ioremap_bar() in drivers/uio
arm: struct device - replace bus_id with dev_name(), dev_set_name()
libata: struct device - replace bus_id with dev_name(), dev_set_name()
avr: struct device - replace bus_id with dev_name(), dev_set_name()
block: struct device - replace bus_id with dev_name(), dev_set_name()
chris: struct device - replace bus_id with dev_name(), dev_set_name()
dmi: struct device - replace bus_id with dev_name(), dev_set_name()
gadget: struct device - replace bus_id with dev_name(), dev_set_name()
gpio: struct device - replace bus_id with dev_name(), dev_set_name()
gpu: struct device - replace bus_id with dev_name(), dev_set_name()
hwmon: struct device - replace bus_id with dev_name(), dev_set_name()
i2o: struct device - replace bus_id with dev_name(), dev_set_name()
IA64: struct device - replace bus_id with dev_name(), dev_set_name()
i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()
infiniband: struct device - replace bus_id with dev_name(), dev_set_name()
ISDN: struct device - replace bus_id with dev_name(), dev_set_name()
...
Diffstat (limited to 'lib')
-rw-r--r-- | lib/dynamic_printk.c | 58 | ||||
-rw-r--r-- | lib/klist.c | 43 | ||||
-rw-r--r-- | lib/kobject_uevent.c | 8 | ||||
-rw-r--r-- | lib/swiotlb.c | 2 |
4 files changed, 72 insertions, 39 deletions
diff --git a/lib/dynamic_printk.c b/lib/dynamic_printk.c index 8e30295e856..165a19763dc 100644 --- a/lib/dynamic_printk.c +++ b/lib/dynamic_printk.c @@ -277,40 +277,34 @@ static ssize_t pr_debug_write(struct file *file, const char __user *buf, dynamic_enabled = DYNAMIC_ENABLED_NONE; } err = 0; - } else { - if (elem) { - if (value && (elem->enable == 0)) { - dynamic_printk_enabled |= - (1LL << elem->hash1); - dynamic_printk_enabled2 |= - (1LL << elem->hash2); - elem->enable = 1; - num_enabled++; - dynamic_enabled = DYNAMIC_ENABLED_SOME; - err = 0; - printk(KERN_DEBUG - "debugging enabled for module %s\n", - elem->name); - } else if (!value && (elem->enable == 1)) { - elem->enable = 0; - num_enabled--; - if (disabled_hash(elem->hash1, true)) - dynamic_printk_enabled &= + } else if (elem) { + if (value && (elem->enable == 0)) { + dynamic_printk_enabled |= (1LL << elem->hash1); + dynamic_printk_enabled2 |= (1LL << elem->hash2); + elem->enable = 1; + num_enabled++; + dynamic_enabled = DYNAMIC_ENABLED_SOME; + err = 0; + printk(KERN_DEBUG + "debugging enabled for module %s\n", + elem->name); + } else if (!value && (elem->enable == 1)) { + elem->enable = 0; + num_enabled--; + if (disabled_hash(elem->hash1, true)) + dynamic_printk_enabled &= ~(1LL << elem->hash1); - if (disabled_hash(elem->hash2, false)) - dynamic_printk_enabled2 &= + if (disabled_hash(elem->hash2, false)) + dynamic_printk_enabled2 &= ~(1LL << elem->hash2); - if (num_enabled) - dynamic_enabled = - DYNAMIC_ENABLED_SOME; - else - dynamic_enabled = - DYNAMIC_ENABLED_NONE; - err = 0; - printk(KERN_DEBUG - "debugging disabled for module " - "%s\n", elem->name); - } + if (num_enabled) + dynamic_enabled = DYNAMIC_ENABLED_SOME; + else + dynamic_enabled = DYNAMIC_ENABLED_NONE; + err = 0; + printk(KERN_DEBUG + "debugging disabled for module %s\n", + elem->name); } } } diff --git a/lib/klist.c b/lib/klist.c index bbdd3015c2c..573d6068a42 100644 --- a/lib/klist.c +++ b/lib/klist.c @@ -36,6 +36,7 @@ #include <linux/klist.h> #include <linux/module.h> +#include <linux/sched.h> /* * Use the lowest bit of n_klist to mark deleted nodes and exclude @@ -108,7 +109,6 @@ static void add_tail(struct klist *k, struct klist_node *n) static void klist_node_init(struct klist *k, struct klist_node *n) { INIT_LIST_HEAD(&n->n_node); - init_completion(&n->n_removed); kref_init(&n->n_ref); knode_set_klist(n, k); if (k->get) @@ -171,13 +171,34 @@ void klist_add_before(struct klist_node *n, struct klist_node *pos) } EXPORT_SYMBOL_GPL(klist_add_before); +struct klist_waiter { + struct list_head list; + struct klist_node *node; + struct task_struct *process; + int woken; +}; + +static DEFINE_SPINLOCK(klist_remove_lock); +static LIST_HEAD(klist_remove_waiters); + static void klist_release(struct kref *kref) { + struct klist_waiter *waiter, *tmp; struct klist_node *n = container_of(kref, struct klist_node, n_ref); WARN_ON(!knode_dead(n)); list_del(&n->n_node); - complete(&n->n_removed); + spin_lock(&klist_remove_lock); + list_for_each_entry_safe(waiter, tmp, &klist_remove_waiters, list) { + if (waiter->node != n) + continue; + + waiter->woken = 1; + mb(); + wake_up_process(waiter->process); + list_del(&waiter->list); + } + spin_unlock(&klist_remove_lock); knode_set_klist(n, NULL); } @@ -217,8 +238,24 @@ EXPORT_SYMBOL_GPL(klist_del); */ void klist_remove(struct klist_node *n) { + struct klist_waiter waiter; + + waiter.node = n; + waiter.process = current; + waiter.woken = 0; + spin_lock(&klist_remove_lock); + list_add(&waiter.list, &klist_remove_waiters); + spin_unlock(&klist_remove_lock); + klist_del(n); - wait_for_completion(&n->n_removed); + + for (;;) { + set_current_state(TASK_UNINTERRUPTIBLE); + if (waiter.woken) + break; + schedule(); + } + __set_current_state(TASK_RUNNING); } EXPORT_SYMBOL_GPL(klist_remove); diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 3f914725bda..318328ddbd1 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -165,7 +165,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, /* keys passed in from the caller */ if (envp_ext) { for (i = 0; envp_ext[i]; i++) { - retval = add_uevent_var(env, envp_ext[i]); + retval = add_uevent_var(env, "%s", envp_ext[i]); if (retval) goto exit; } @@ -225,8 +225,10 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, } NETLINK_CB(skb).dst_group = 1; - netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL); - } + retval = netlink_broadcast(uevent_sock, skb, 0, 1, + GFP_KERNEL); + } else + retval = -ENOMEM; } #endif diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 7f5e21b9c16..c2a4e640145 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -647,7 +647,7 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic) * the damage, or panic when the transfer is too big. */ printk(KERN_ERR "DMA: Out of SW-IOMMU space for %zu bytes at " - "device %s\n", size, dev ? dev->bus_id : "?"); + "device %s\n", size, dev ? dev_name(dev) : "?"); if (size > io_tlb_overflow && do_panic) { if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) |