/*
- * linux/arch/i386/kerne/cpu/mcheck/therm_throt.c
+ * linux/arch/i386/kernel/cpu/mcheck/therm_throt.c
*
* Thermal throttle event support code (such as syslog messaging and rate
* limiting) that was factored out from x86_64 (mce_intel.c) and i386 (p4.c).
mutex_lock(&therm_cpu_lock);
switch (action) {
case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
err = thermal_throttle_add_dev(sys_dev);
WARN_ON(err);
break;
case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
thermal_throttle_remove_dev(sys_dev);
break;
}
* on a queue, such as calling the unplug function after a timeout.
* A block device may call blk_sync_queue to ensure that any
* such activity is cancelled, thus allowing it to release resources
- * the the callbacks might use. The caller must already have made sure
+ * that the callbacks might use. The caller must already have made sure
* that its ->make_request_fn will not re-add plugging prior to calling
* this function.
*
void blk_sync_queue(struct request_queue *q)
{
del_timer_sync(&q->unplug_timer);
- kblockd_flush();
}
EXPORT_SYMBOL(blk_sync_queue);
* If a CPU goes away, splice its entries to the current CPU
* and trigger a run of the softirq
*/
- if (action == CPU_DEAD) {
+ if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) {
int cpu = (unsigned long) hcpu;
local_irq_disable();
EXPORT_SYMBOL(kblockd_schedule_work);
-void kblockd_flush(void)
+void kblockd_flush_work(struct work_struct *work)
{
- flush_workqueue(kblockd_workqueue);
+ cancel_work_sync(work);
}
-EXPORT_SYMBOL(kblockd_flush);
+EXPORT_SYMBOL(kblockd_flush_work);
int __init blk_dev_init(void)
{
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/delay.h>
+#include <linux/bitrev.h>
#include <asm/uaccess.h>
#include <asm/io.h>
}
#endif
-#define b_0000 15
-#define b_0001 14
-#define b_0010 13
-#define b_0011 12
-#define b_0100 11
-#define b_0101 10
-#define b_0110 9
-#define b_0111 8
-#define b_1000 7
-#define b_1001 6
-#define b_1010 5
-#define b_1011 4
-#define b_1100 3
-#define b_1101 2
-#define b_1110 1
-#define b_1111 0
-
-static unsigned char irtab[16] = {
- b_0000, b_1000, b_0100, b_1100,
- b_0010, b_1010, b_0110, b_1110,
- b_0001, b_1001, b_0101, b_1101,
- b_0011, b_1011, b_0111, b_1111
-};
+static inline unsigned char invert_revert(unsigned char ch)
+{
+ return bitrev8(~ch);
+}
static void str_invert_revert(unsigned char *b, int len)
{
int i;
for (i = 0; i < len; i++)
- b[i] = (irtab[b[i] & 0x0f] << 4) | irtab[b[i] >> 4];
-}
-
-static unsigned char invert_revert(unsigned char ch)
-{
- return (irtab[ch & 0x0f] << 4) | irtab[ch >> 4];
+ b[i] = invert_revert(b[i]);
}
#define ATRLENCK(dev,pos) \
/*
* wait for atr to become valid.
* note: it is important to lock this code. if we dont, the monitor
- * could be run between test_bit and the the call the sleep on the
+ * could be run between test_bit and the call to sleep on the
* atr-queue. if *then* the monitor detects atr valid, it will wake up
* any process on the atr-queue, *but* since we have been interrupted,
* we do not yet sleep on this queue. this would result in a missed
init_waitqueue_head(&dev->readq);
ret = cm4000_config(link, i);
- if (ret)
+ if (ret) {
+ dev_table[i] = NULL;
+ kfree(dev);
return ret;
+ }
class_device_create(cmm_class, NULL, MKDEV(major, i), NULL,
"cmm%d", i);
cm4000_release(link);
dev_table[devno] = NULL;
- kfree(dev);
+ kfree(dev);
class_device_destroy(cmm_class, MKDEV(major, devno));
if (major < 0) {
printk(KERN_WARNING MODULE_NAME
": could not get major number\n");
+ class_destroy(cmm_class);
return major;
}
rc = pcmcia_register_driver(&cm4000_driver);
if (rc < 0) {
unregister_chrdev(major, DEVICE_NAME);
+ class_destroy(cmm_class);
return rc;
}
if (ld == NULL)
return -EINVAL;
- /*
- * No more input please, we are switching. The new ldisc
- * will update this value in the ldisc open function
- */
-
- tty->receive_room = 0;
-
/*
* Problem: What do we do if this blocks ?
*/
return 0;
}
+ /*
+ * No more input please, we are switching. The new ldisc
+ * will update this value in the ldisc open function
+ */
+
+ tty->receive_room = 0;
+
o_ldisc = tty->ldisc;
o_tty = tty->link;
/**
- * stop_tty - propogate flow control
+ * stop_tty - propagate flow control
* @tty: tty to stop
*
* Perform flow control to the driver. For PTY/TTY pairs we
- * must also propogate the TIOCKPKT status. May be called
+ * must also propagate the TIOCKPKT status. May be called
* on an already stopped device and will not re-call the driver
* method.
*
EXPORT_SYMBOL(stop_tty);
/**
- * start_tty - propogate flow control
+ * start_tty - propagate flow control
* @tty: tty to start
*
* Start a tty that has been stopped if at all possible. Perform
- * any neccessary wakeups and propogate the TIOCPKT status. If this
+ * any neccessary wakeups and propagate the TIOCPKT status. If this
* is the tty was previous stopped and is being started then the
* driver start method is invoked and the line discipline woken.
*
* Wait on and process all in-flight BIOs. This must only be called once
* all bios have been issued so that the refcount can only decrease.
* This just waits for all bios to make it through dio_bio_complete. IO
- * errors are propogated through dio->io_error and should be propogated via
+ * errors are propagated through dio->io_error and should be propagated via
* dio_complete().
*/
static void dio_await_completion(struct dio *dio)
do_holes:
/* Handle holes */
if (!buffer_mapped(map_bh)) {
- char *kaddr;
loff_t i_size_aligned;
/* AKPM: eargh, -ENOTBLK is a hack */
page_cache_release(page);
goto out;
}
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + (block_in_page << blkbits),
- 0, 1 << blkbits);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ zero_user_page(page, block_in_page << blkbits,
+ 1 << blkbits, KM_USER0);
dio->block_in_file++;
block_in_page++;
goto next_block;
queues every message has a priority which decides about succession
of receiving it by a process. If you want to compile and run
programs written e.g. for Solaris with use of its POSIX message
- queues (functions mq_*) say Y here. To use this feature you will
- also need mqueue library, available from
- <http://www.mat.uni.torun.pl/~wrona/posix_ipc/>
+ queues (functions mq_*) say Y here.
POSIX message queues are visible as a filesystem called 'mqueue'
and can be mounted somewhere if you want to do filesystem
releases.
If enabled, this option will also move any device structures
- that belong to a class, back into the /sys/class heirachy, in
+ that belong to a class, back into the /sys/class hierarchy, in
order to support older versions of udev.
If you are using a distro that was released in 2006 or later,
on EMBEDDED systems. /proc/vmstat will only show page counts
if VM event counters are disabled.
+config SLUB_DEBUG
+ default y
+ bool "Enable SLUB debugging support" if EMBEDDED
+ help
+ SLUB has extensive debug support features. Disabling these can
+ result in significant savings in code size. This also disables
+ SLUB sysfs support. /sys/slab will not exist and there will be
+ no support for cache validation etc.
+
choice
prompt "Choose SLAB allocator"
default SLAB
bool "SLAB"
help
The regular slab allocator that is established and known to work
- well in all environments. It organizes chache hot objects in
+ well in all environments. It organizes cache hot objects in
per cpu and per node queues. SLAB is the default choice for
- slab allocator.
+ a slab allocator.
config SLUB
depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT
instead of managing queues of cached objects (SLAB approach).
Per cpu caching is realized using slabs of objects instead
of queues of objects. SLUB can use memory efficiently
- way and has enhanced diagnostics.
+ and has enhanced diagnostics.
config SLOB
#
-# SLOB cannot support SMP because SLAB_DESTROY_BY_RCU does not work
-# properly.
+# SLOB does not support SMP because SLAB_DESTROY_BY_RCU is unsupported
#
depends on EMBEDDED && !SMP && !SPARSEMEM
bool "SLOB (Simple Allocator)"
help
SLOB replaces the SLAB allocator with a drastically simpler
allocator. SLOB is more space efficient that SLAB but does not
- scale well (single lock for all operations) and is more susceptible
- to fragmentation. SLOB it is a great choice to reduce
- memory usage and code size for embedded systems.
+ scale well (single lock for all operations) and is also highly
+ susceptible to fragmentation. SLUB can accomplish a higher object
+ density. It is usually better to use SLUB instead of SLOB.
endchoice
/**
* wakeup_readers - wake up readers waiting on a channel
- * @data: contains the the channel buffer
- * @work: work struct that contains the channel buffer
++ * @data: contains the channel buffer
*
- * This is the work function used to defer reader waking. The
- * reason waking is deferred is that calling directly from write
- * causes problems if you're writing from say the scheduler.
+ * This is the timer function used to defer reader waking.
*/
-static void wakeup_readers(struct work_struct *work)
+static void wakeup_readers(unsigned long data)
{
- struct rchan_buf *buf =
- container_of(work, struct rchan_buf, wake_readers.work);
+ struct rchan_buf *buf = (struct rchan_buf *)data;
wake_up_interruptible(&buf->read_wait);
}
if (init) {
init_waitqueue_head(&buf->read_wait);
kref_init(&buf->kref);
- INIT_DELAYED_WORK(&buf->wake_readers, NULL);
- } else {
- cancel_delayed_work(&buf->wake_readers);
- flush_scheduled_work();
- }
+ setup_timer(&buf->timer, wakeup_readers, (unsigned long)buf);
+ } else
+ del_timer_sync(&buf->timer);
buf->subbufs_produced = 0;
buf->subbufs_consumed = 0;
static void relay_close_buf(struct rchan_buf *buf)
{
buf->finalized = 1;
- cancel_delayed_work(&buf->wake_readers);
- flush_scheduled_work();
+ del_timer_sync(&buf->timer);
kref_put(&buf->kref, relay_remove_buf);
}
switch(action) {
case CPU_UP_PREPARE:
+ case CPU_UP_PREPARE_FROZEN:
mutex_lock(&relay_channels_mutex);
list_for_each_entry(chan, &relay_channels, list) {
if (chan->buf[hotcpu])
mutex_unlock(&relay_channels_mutex);
break;
case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
/* No need to flush the cpu : will be flushed upon
* final relay_flush() call. */
break;
buf->dentry->d_inode->i_size += buf->chan->subbuf_size -
buf->padding[old_subbuf];
smp_mb();
- if (waitqueue_active(&buf->read_wait)) {
- PREPARE_DELAYED_WORK(&buf->wake_readers,
- wakeup_readers);
- schedule_delayed_work(&buf->wake_readers, 1);
- }
+ if (waitqueue_active(&buf->read_wait))
+ /*
+ * Calling wake_up_interruptible() from here
+ * will deadlock if we happen to be logging
+ * from the scheduler (trying to re-grab
+ * rq->lock), so defer it.
+ */
+ __mod_timer(&buf->timer, jiffies + 1);
}
old = buf->data;
return -ENOENT;
}
+/**
+ * notifier_call_chain - Informs the registered notifiers about an event.
+ * @nl: Pointer to head of the blocking notifier chain
+ * @val: Value passed unmodified to notifier function
+ * @v: Pointer passed unmodified to notifier function
+ * @nr_to_call: Number of notifier functions to be called. Don't care
+ * value of this parameter is -1.
+ * @nr_calls: Records the number of notifications sent. Don't care
+ * value of this field is NULL.
+ * @returns: notifier_call_chain returns the value returned by the
+ * last notifier function called.
+ */
+
static int __kprobes notifier_call_chain(struct notifier_block **nl,
- unsigned long val, void *v)
+ unsigned long val, void *v,
+ int nr_to_call, int *nr_calls)
{
int ret = NOTIFY_DONE;
struct notifier_block *nb, *next_nb;
nb = rcu_dereference(*nl);
- while (nb) {
+
+ while (nb && nr_to_call) {
next_nb = rcu_dereference(nb->next);
ret = nb->notifier_call(nb, val, v);
+
+ if (nr_calls)
+ (*nr_calls)++;
+
if ((ret & NOTIFY_STOP_MASK) == NOTIFY_STOP_MASK)
break;
nb = next_nb;
+ nr_to_call--;
}
return ret;
}
EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister);
/**
- * atomic_notifier_call_chain - Call functions in an atomic notifier chain
+ * __atomic_notifier_call_chain - Call functions in an atomic notifier chain
* @nh: Pointer to head of the atomic notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
+ * @nr_to_call: See the comment for notifier_call_chain.
+ * @nr_calls: See the comment for notifier_call_chain.
*
* Calls each function in a notifier chain in turn. The functions
* run in an atomic context, so they must not block.
* of the last notifier function called.
*/
-int __kprobes atomic_notifier_call_chain(struct atomic_notifier_head *nh,
- unsigned long val, void *v)
+int __kprobes __atomic_notifier_call_chain(struct atomic_notifier_head *nh,
+ unsigned long val, void *v,
+ int nr_to_call, int *nr_calls)
{
int ret;
rcu_read_lock();
- ret = notifier_call_chain(&nh->head, val, v);
+ ret = notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
rcu_read_unlock();
return ret;
}
-EXPORT_SYMBOL_GPL(atomic_notifier_call_chain);
+EXPORT_SYMBOL_GPL(__atomic_notifier_call_chain);
+
+int __kprobes atomic_notifier_call_chain(struct atomic_notifier_head *nh,
+ unsigned long val, void *v)
+{
+ return __atomic_notifier_call_chain(nh, val, v, -1, NULL);
+}
+EXPORT_SYMBOL_GPL(atomic_notifier_call_chain);
/*
* Blocking notifier chain routines. All access to the chain is
* synchronized by an rwsem.
EXPORT_SYMBOL_GPL(blocking_notifier_chain_unregister);
/**
- * blocking_notifier_call_chain - Call functions in a blocking notifier chain
+ * __blocking_notifier_call_chain - Call functions in a blocking notifier chain
* @nh: Pointer to head of the blocking notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
+ * @nr_to_call: See comment for notifier_call_chain.
+ * @nr_calls: See comment for notifier_call_chain.
*
* Calls each function in a notifier chain in turn. The functions
* run in a process context, so they are allowed to block.
* of the last notifier function called.
*/
-int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
- unsigned long val, void *v)
+int __blocking_notifier_call_chain(struct blocking_notifier_head *nh,
+ unsigned long val, void *v,
+ int nr_to_call, int *nr_calls)
{
int ret = NOTIFY_DONE;
*/
if (rcu_dereference(nh->head)) {
down_read(&nh->rwsem);
- ret = notifier_call_chain(&nh->head, val, v);
+ ret = notifier_call_chain(&nh->head, val, v, nr_to_call,
+ nr_calls);
up_read(&nh->rwsem);
}
return ret;
}
+EXPORT_SYMBOL_GPL(__blocking_notifier_call_chain);
+int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
+ unsigned long val, void *v)
+{
+ return __blocking_notifier_call_chain(nh, val, v, -1, NULL);
+}
EXPORT_SYMBOL_GPL(blocking_notifier_call_chain);
/*
EXPORT_SYMBOL_GPL(raw_notifier_chain_unregister);
/**
- * raw_notifier_call_chain - Call functions in a raw notifier chain
+ * __raw_notifier_call_chain - Call functions in a raw notifier chain
* @nh: Pointer to head of the raw notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
+ * @nr_to_call: See comment for notifier_call_chain.
+ * @nr_calls: See comment for notifier_call_chain
*
* Calls each function in a notifier chain in turn. The functions
* run in an undefined context.
* of the last notifier function called.
*/
+int __raw_notifier_call_chain(struct raw_notifier_head *nh,
+ unsigned long val, void *v,
+ int nr_to_call, int *nr_calls)
+{
+ return notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
+}
+
+EXPORT_SYMBOL_GPL(__raw_notifier_call_chain);
+
int raw_notifier_call_chain(struct raw_notifier_head *nh,
unsigned long val, void *v)
{
- return notifier_call_chain(&nh->head, val, v);
+ return __raw_notifier_call_chain(nh, val, v, -1, NULL);
}
EXPORT_SYMBOL_GPL(raw_notifier_call_chain);
EXPORT_SYMBOL_GPL(srcu_notifier_chain_unregister);
/**
- * srcu_notifier_call_chain - Call functions in an SRCU notifier chain
+ * __srcu_notifier_call_chain - Call functions in an SRCU notifier chain
* @nh: Pointer to head of the SRCU notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
+ * @nr_to_call: See comment for notifier_call_chain.
+ * @nr_calls: See comment for notifier_call_chain
*
* Calls each function in a notifier chain in turn. The functions
* run in a process context, so they are allowed to block.
* of the last notifier function called.
*/
-int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
- unsigned long val, void *v)
+int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
+ unsigned long val, void *v,
+ int nr_to_call, int *nr_calls)
{
int ret;
int idx;
idx = srcu_read_lock(&nh->srcu);
- ret = notifier_call_chain(&nh->head, val, v);
+ ret = notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
srcu_read_unlock(&nh->srcu, idx);
return ret;
}
+EXPORT_SYMBOL_GPL(__srcu_notifier_call_chain);
+int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
+ unsigned long val, void *v)
+{
+ return __srcu_notifier_call_chain(nh, val, v, -1, NULL);
+}
EXPORT_SYMBOL_GPL(srcu_notifier_call_chain);
/**
#ifdef CONFIG_SOFTWARE_SUSPEND
case LINUX_REBOOT_CMD_SW_SUSPEND:
{
- int ret = pm_suspend(PM_SUSPEND_DISK);
+ int ret = hibernate();
unlock_kernel();
return ret;
}
}
/*
- * Samma på svenska..
+ * Samma på svenska..
*/
asmlinkage long sys_setfsgid(gid_t gid)
{
projects / mv-sheeva.git / commitdiff