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Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits)
  clockevents: Convert to raw_spinlock
  clockevents: Make tick_device_lock static
  debugobjects: Convert to raw_spinlocks
  perf_event: Convert to raw_spinlock
  hrtimers: Convert to raw_spinlocks
  genirq: Convert irq_desc.lock to raw_spinlock
  smp: Convert smplocks to raw_spinlocks
  rtmutes: Convert rtmutex.lock to raw_spinlock
  sched: Convert pi_lock to raw_spinlock
  sched: Convert cpupri lock to raw_spinlock
  sched: Convert rt_runtime_lock to raw_spinlock
  sched: Convert rq->lock to raw_spinlock
  plist: Make plist debugging raw_spinlock aware
  bkl: Fixup core_lock fallout
  locking: Cleanup the name space completely
  locking: Further name space cleanups
  alpha: Fix fallout from locking changes
  locking: Implement new raw_spinlock
  locking: Convert raw_rwlock functions to arch_rwlock
  locking: Convert raw_rwlock to arch_rwlock
  ...
This commit is contained in:
Linus Torvalds
2009-12-15 09:02:01 -08:00
parent 050cbb09da b5f91da0a6
commit 8f0ddf91f2
136 changed files with 2485 additions and 2177 deletions
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32
kernel/smp.c
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@@ -16,11 +16,11 @@ static DEFINE_PER_CPU(struct call_single_queue, call_single_queue);
static struct {
struct list_head queue;
spinlock_t lock;
raw_spinlock_t lock;
} call_function __cacheline_aligned_in_smp =
{
.queue = LIST_HEAD_INIT(call_function.queue),
.lock = __SPIN_LOCK_UNLOCKED(call_function.lock),
.lock = __RAW_SPIN_LOCK_UNLOCKED(call_function.lock),
};
enum {
@@ -35,7 +35,7 @@ struct call_function_data {
struct call_single_queue {
struct list_head list;
spinlock_t lock;
raw_spinlock_t lock;
};
static DEFINE_PER_CPU(struct call_function_data, cfd_data);
@@ -80,7 +80,7 @@ static int __cpuinit init_call_single_data(void)
for_each_possible_cpu(i) {
struct call_single_queue *q = &per_cpu(call_single_queue, i);
spin_lock_init(&q->lock);
raw_spin_lock_init(&q->lock);
INIT_LIST_HEAD(&q->list);
}
@@ -141,10 +141,10 @@ void generic_exec_single(int cpu, struct call_single_data *data, int wait)
unsigned long flags;
int ipi;
spin_lock_irqsave(&dst->lock, flags);
raw_spin_lock_irqsave(&dst->lock, flags);
ipi = list_empty(&dst->list);
list_add_tail(&data->list, &dst->list);
spin_unlock_irqrestore(&dst->lock, flags);
raw_spin_unlock_irqrestore(&dst->lock, flags);
/*
* The list addition should be visible before sending the IPI
@@ -201,9 +201,9 @@ void generic_smp_call_function_interrupt(void)
refs = atomic_dec_return(&data->refs);
WARN_ON(refs < 0);
if (!refs) {
spin_lock(&call_function.lock);
raw_spin_lock(&call_function.lock);
list_del_rcu(&data->csd.list);
spin_unlock(&call_function.lock);
raw_spin_unlock(&call_function.lock);
}
if (refs)
@@ -229,9 +229,9 @@ void generic_smp_call_function_single_interrupt(void)
*/
WARN_ON_ONCE(!cpu_online(smp_processor_id()));
spin_lock(&q->lock);
raw_spin_lock(&q->lock);
list_replace_init(&q->list, &list);
spin_unlock(&q->lock);
raw_spin_unlock(&q->lock);
while (!list_empty(&list)) {
struct call_single_data *data;
@@ -448,14 +448,14 @@ void smp_call_function_many(const struct cpumask *mask,
cpumask_clear_cpu(this_cpu, data->cpumask);
atomic_set(&data->refs, cpumask_weight(data->cpumask));
spin_lock_irqsave(&call_function.lock, flags);
raw_spin_lock_irqsave(&call_function.lock, flags);
/*
* Place entry at the _HEAD_ of the list, so that any cpu still
* observing the entry in generic_smp_call_function_interrupt()
* will not miss any other list entries:
*/
list_add_rcu(&data->csd.list, &call_function.queue);
spin_unlock_irqrestore(&call_function.lock, flags);
raw_spin_unlock_irqrestore(&call_function.lock, flags);
/*
* Make the list addition visible before sending the ipi.
@@ -500,20 +500,20 @@ EXPORT_SYMBOL(smp_call_function);
void ipi_call_lock(void)
{
spin_lock(&call_function.lock);
raw_spin_lock(&call_function.lock);
}
void ipi_call_unlock(void)
{
spin_unlock(&call_function.lock);
raw_spin_unlock(&call_function.lock);
}
void ipi_call_lock_irq(void)
{
spin_lock_irq(&call_function.lock);
raw_spin_lock_irq(&call_function.lock);
}
void ipi_call_unlock_irq(void)
{
spin_unlock_irq(&call_function.lock);
raw_spin_unlock_irq(&call_function.lock);
}