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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 20:02:07 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 20:02:07 -0500
commit40d7ee5d162203b40b5f4fbb312ab016edddb97f (patch)
tree432db33df85f7f244676127a189a828dfbf2877b /lib
parent5fec8bdbf9a1c4df4ad3f20e52aa2d8caed490c8 (diff)
parentb8ac9fc0e8cda9f9776019c5b0464b0c6d2d4c90 (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.c58
-rw-r--r--lib/klist.c43
-rw-r--r--lib/kobject_uevent.c8
-rw-r--r--lib/swiotlb.c2
4 files changed, 72 insertions, 39 deletions
diff --git a/lib/dynamic_printk.c b/lib/dynamic_printk.c
index 8e30295e8566..165a19763dc9 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,
277 dynamic_enabled = DYNAMIC_ENABLED_NONE; 277 dynamic_enabled = DYNAMIC_ENABLED_NONE;
278 } 278 }
279 err = 0; 279 err = 0;
280 } else { 280 } else if (elem) {
281 if (elem) { 281 if (value && (elem->enable == 0)) {
282 if (value && (elem->enable == 0)) { 282 dynamic_printk_enabled |= (1LL << elem->hash1);
283 dynamic_printk_enabled |= 283 dynamic_printk_enabled2 |= (1LL << elem->hash2);
284 (1LL << elem->hash1); 284 elem->enable = 1;
285 dynamic_printk_enabled2 |= 285 num_enabled++;
286 (1LL << elem->hash2); 286 dynamic_enabled = DYNAMIC_ENABLED_SOME;
287 elem->enable = 1; 287 err = 0;
288 num_enabled++; 288 printk(KERN_DEBUG
289 dynamic_enabled = DYNAMIC_ENABLED_SOME; 289 "debugging enabled for module %s\n",
290 err = 0; 290 elem->name);
291 printk(KERN_DEBUG 291 } else if (!value && (elem->enable == 1)) {
292 "debugging enabled for module %s\n", 292 elem->enable = 0;
293 elem->name); 293 num_enabled--;
294 } else if (!value && (elem->enable == 1)) { 294 if (disabled_hash(elem->hash1, true))
295 elem->enable = 0; 295 dynamic_printk_enabled &=
296 num_enabled--;
297 if (disabled_hash(elem->hash1, true))
298 dynamic_printk_enabled &=
299 ~(1LL << elem->hash1); 296 ~(1LL << elem->hash1);
300 if (disabled_hash(elem->hash2, false)) 297 if (disabled_hash(elem->hash2, false))
301 dynamic_printk_enabled2 &= 298 dynamic_printk_enabled2 &=
302 ~(1LL << elem->hash2); 299 ~(1LL << elem->hash2);
303 if (num_enabled) 300 if (num_enabled)
304 dynamic_enabled = 301 dynamic_enabled = DYNAMIC_ENABLED_SOME;
305 DYNAMIC_ENABLED_SOME; 302 else
306 else 303 dynamic_enabled = DYNAMIC_ENABLED_NONE;
307 dynamic_enabled = 304 err = 0;
308 DYNAMIC_ENABLED_NONE; 305 printk(KERN_DEBUG
309 err = 0; 306 "debugging disabled for module %s\n",
310 printk(KERN_DEBUG 307 elem->name);
311 "debugging disabled for module "
312 "%s\n", elem->name);
313 }
314 } 308 }
315 } 309 }
316 } 310 }
diff --git a/lib/klist.c b/lib/klist.c
index bbdd3015c2c7..573d6068a42e 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -36,6 +36,7 @@
36 36
37#include <linux/klist.h> 37#include <linux/klist.h>
38#include <linux/module.h> 38#include <linux/module.h>
39#include <linux/sched.h>
39 40
40/* 41/*
41 * Use the lowest bit of n_klist to mark deleted nodes and exclude 42 * 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)
108static void klist_node_init(struct klist *k, struct klist_node *n) 109static void klist_node_init(struct klist *k, struct klist_node *n)
109{ 110{
110 INIT_LIST_HEAD(&n->n_node); 111 INIT_LIST_HEAD(&n->n_node);
111 init_completion(&n->n_removed);
112 kref_init(&n->n_ref); 112 kref_init(&n->n_ref);
113 knode_set_klist(n, k); 113 knode_set_klist(n, k);
114 if (k->get) 114 if (k->get)
@@ -171,13 +171,34 @@ void klist_add_before(struct klist_node *n, struct klist_node *pos)
171} 171}
172EXPORT_SYMBOL_GPL(klist_add_before); 172EXPORT_SYMBOL_GPL(klist_add_before);
173 173
174struct klist_waiter {
175 struct list_head list;
176 struct klist_node *node;
177 struct task_struct *process;
178 int woken;
179};
180
181static DEFINE_SPINLOCK(klist_remove_lock);
182static LIST_HEAD(klist_remove_waiters);
183
174static void klist_release(struct kref *kref) 184static void klist_release(struct kref *kref)
175{ 185{
186 struct klist_waiter *waiter, *tmp;
176 struct klist_node *n = container_of(kref, struct klist_node, n_ref); 187 struct klist_node *n = container_of(kref, struct klist_node, n_ref);
177 188
178 WARN_ON(!knode_dead(n)); 189 WARN_ON(!knode_dead(n));
179 list_del(&n->n_node); 190 list_del(&n->n_node);
180 complete(&n->n_removed); 191 spin_lock(&klist_remove_lock);
192 list_for_each_entry_safe(waiter, tmp, &klist_remove_waiters, list) {
193 if (waiter->node != n)
194 continue;
195
196 waiter->woken = 1;
197 mb();
198 wake_up_process(waiter->process);
199 list_del(&waiter->list);
200 }
201 spin_unlock(&klist_remove_lock);
181 knode_set_klist(n, NULL); 202 knode_set_klist(n, NULL);
182} 203}
183 204
@@ -217,8 +238,24 @@ EXPORT_SYMBOL_GPL(klist_del);
217 */ 238 */
218void klist_remove(struct klist_node *n) 239void klist_remove(struct klist_node *n)
219{ 240{
241 struct klist_waiter waiter;
242
243 waiter.node = n;
244 waiter.process = current;
245 waiter.woken = 0;
246 spin_lock(&klist_remove_lock);
247 list_add(&waiter.list, &klist_remove_waiters);
248 spin_unlock(&klist_remove_lock);
249
220 klist_del(n); 250 klist_del(n);
221 wait_for_completion(&n->n_removed); 251
252 for (;;) {
253 set_current_state(TASK_UNINTERRUPTIBLE);
254 if (waiter.woken)
255 break;
256 schedule();
257 }
258 __set_current_state(TASK_RUNNING);
222} 259}
223EXPORT_SYMBOL_GPL(klist_remove); 260EXPORT_SYMBOL_GPL(klist_remove);
224 261
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 3f914725bda8..318328ddbd1c 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,
165 /* keys passed in from the caller */ 165 /* keys passed in from the caller */
166 if (envp_ext) { 166 if (envp_ext) {
167 for (i = 0; envp_ext[i]; i++) { 167 for (i = 0; envp_ext[i]; i++) {
168 retval = add_uevent_var(env, envp_ext[i]); 168 retval = add_uevent_var(env, "%s", envp_ext[i]);
169 if (retval) 169 if (retval)
170 goto exit; 170 goto exit;
171 } 171 }
@@ -225,8 +225,10 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
225 } 225 }
226 226
227 NETLINK_CB(skb).dst_group = 1; 227 NETLINK_CB(skb).dst_group = 1;
228 netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL); 228 retval = netlink_broadcast(uevent_sock, skb, 0, 1,
229 } 229 GFP_KERNEL);
230 } else
231 retval = -ENOMEM;
230 } 232 }
231#endif 233#endif
232 234
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 7f5e21b9c16b..c2a4e6401456 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)
647 * the damage, or panic when the transfer is too big. 647 * the damage, or panic when the transfer is too big.
648 */ 648 */
649 printk(KERN_ERR "DMA: Out of SW-IOMMU space for %zu bytes at " 649 printk(KERN_ERR "DMA: Out of SW-IOMMU space for %zu bytes at "
650 "device %s\n", size, dev ? dev->bus_id : "?"); 650 "device %s\n", size, dev ? dev_name(dev) : "?");
651 651
652 if (size > io_tlb_overflow && do_panic) { 652 if (size > io_tlb_overflow && do_panic) {
653 if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) 653 if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)