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-rw-r--r--lib/bust_spinlocks.c2
-rw-r--r--lib/dynamic_printk.c58
-rw-r--r--lib/fault-inject.c1
-rw-r--r--lib/klist.c43
-rw-r--r--lib/kobject_uevent.c8
-rw-r--r--lib/percpu_counter.c18
-rw-r--r--lib/prio_heap.c2
-rw-r--r--lib/proportions.c2
-rw-r--r--lib/radix-tree.c2
-rw-r--r--lib/swiotlb.c2
-rw-r--r--lib/vsprintf.c4
11 files changed, 96 insertions, 46 deletions
diff --git a/lib/bust_spinlocks.c b/lib/bust_spinlocks.c
index 486da62b2b0..9681d54b95d 100644
--- a/lib/bust_spinlocks.c
+++ b/lib/bust_spinlocks.c
@@ -12,6 +12,7 @@
#include <linux/tty.h>
#include <linux/wait.h>
#include <linux/vt_kern.h>
+#include <linux/console.h>
void __attribute__((weak)) bust_spinlocks(int yes)
@@ -22,6 +23,7 @@ void __attribute__((weak)) bust_spinlocks(int yes)
#ifdef CONFIG_VT
unblank_screen();
#endif
+ console_unblank();
if (--oops_in_progress == 0)
wake_up_klogd();
}
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/fault-inject.c b/lib/fault-inject.c
index a50a311554c..f97af55bdd9 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -6,7 +6,6 @@
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/interrupt.h>
-#include <linux/unwind.h>
#include <linux/stacktrace.h>
#include <linux/kallsyms.h>
#include <linux/fault-inject.h>
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/percpu_counter.c b/lib/percpu_counter.c
index 4bb0ed350e7..aeaa6d73444 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -9,10 +9,8 @@
#include <linux/cpu.h>
#include <linux/module.h>
-#ifdef CONFIG_HOTPLUG_CPU
static LIST_HEAD(percpu_counters);
static DEFINE_MUTEX(percpu_counters_lock);
-#endif
void percpu_counter_set(struct percpu_counter *fbc, s64 amount)
{
@@ -101,13 +99,24 @@ void percpu_counter_destroy(struct percpu_counter *fbc)
}
EXPORT_SYMBOL(percpu_counter_destroy);
-#ifdef CONFIG_HOTPLUG_CPU
+int percpu_counter_batch __read_mostly = 32;
+EXPORT_SYMBOL(percpu_counter_batch);
+
+static void compute_batch_value(void)
+{
+ int nr = num_online_cpus();
+
+ percpu_counter_batch = max(32, nr*2);
+}
+
static int __cpuinit percpu_counter_hotcpu_callback(struct notifier_block *nb,
unsigned long action, void *hcpu)
{
+#ifdef CONFIG_HOTPLUG_CPU
unsigned int cpu;
struct percpu_counter *fbc;
+ compute_batch_value();
if (action != CPU_DEAD)
return NOTIFY_OK;
@@ -124,13 +133,14 @@ static int __cpuinit percpu_counter_hotcpu_callback(struct notifier_block *nb,
spin_unlock_irqrestore(&fbc->lock, flags);
}
mutex_unlock(&percpu_counters_lock);
+#endif
return NOTIFY_OK;
}
static int __init percpu_counter_startup(void)
{
+ compute_batch_value();
hotcpu_notifier(percpu_counter_hotcpu_callback, 0);
return 0;
}
module_init(percpu_counter_startup);
-#endif
diff --git a/lib/prio_heap.c b/lib/prio_heap.c
index 471944a54e2..a7af6f85eca 100644
--- a/lib/prio_heap.c
+++ b/lib/prio_heap.c
@@ -31,7 +31,7 @@ void *heap_insert(struct ptr_heap *heap, void *p)
if (heap->size < heap->max) {
/* Heap insertion */
- int pos = heap->size++;
+ pos = heap->size++;
while (pos > 0 && heap->gt(p, ptrs[(pos-1)/2])) {
ptrs[pos] = ptrs[(pos-1)/2];
pos = (pos-1)/2;
diff --git a/lib/proportions.c b/lib/proportions.c
index 7367f2b727d..d50746a79de 100644
--- a/lib/proportions.c
+++ b/lib/proportions.c
@@ -147,6 +147,7 @@ out:
* this is used to track the active references.
*/
static struct prop_global *prop_get_global(struct prop_descriptor *pd)
+__acquires(RCU)
{
int index;
@@ -160,6 +161,7 @@ static struct prop_global *prop_get_global(struct prop_descriptor *pd)
}
static void prop_put_global(struct prop_descriptor *pd, struct prop_global *pg)
+__releases(RCU)
{
rcu_read_unlock();
}
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index be86b32bc87..8d3fb0bd128 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -81,7 +81,7 @@ struct radix_tree_preload {
int nr;
struct radix_tree_node *nodes[RADIX_TREE_MAX_PATH];
};
-DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, };
+static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, };
static inline gfp_t root_gfp_mask(struct radix_tree_root *root)
{
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 48deef7e197..1f991acc2a0 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -619,7 +619,7 @@ 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)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 98d632277ca..0fbd0121d91 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -170,6 +170,8 @@ int strict_strtoul(const char *cp, unsigned int base, unsigned long *res)
return -EINVAL;
val = simple_strtoul(cp, &tail, base);
+ if (tail == cp)
+ return -EINVAL;
if ((*tail == '\0') ||
((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {
*res = val;
@@ -241,6 +243,8 @@ int strict_strtoull(const char *cp, unsigned int base, unsigned long long *res)
return -EINVAL;
val = simple_strtoull(cp, &tail, base);
+ if (tail == cp)
+ return -EINVAL;
if ((*tail == '\0') ||
((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {
*res = val;
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-14 00:31:37 +0000