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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
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/ia64/include/asm/bitops.h
View File

@@ -127,7 +127,7 @@ clear_bit_unlock (int nr, volatile void *addr)
* @addr: Address to start counting from
*
* Similarly to clear_bit_unlock, the implementation uses a store
* with release semantics. See also __raw_spin_unlock().
* with release semantics. See also arch_spin_unlock().
*/
static __inline__ void
__clear_bit_unlock(int nr, void *addr)

76
arch/ia64/include/asm/spinlock.h
View File

@@ -17,7 +17,7 @@
#include <asm/intrinsics.h>
#include <asm/system.h>
#define __raw_spin_lock_init(x) ((x)->lock = 0)
#define arch_spin_lock_init(x) ((x)->lock = 0)
/*
* Ticket locks are conceptually two parts, one indicating the current head of
@@ -38,7 +38,7 @@
#define TICKET_BITS 15
#define TICKET_MASK ((1 << TICKET_BITS) - 1)
static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
static __always_inline void __ticket_spin_lock(arch_spinlock_t *lock)
{
int *p = (int *)&lock->lock, ticket, serve;
@@ -58,7 +58,7 @@ static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
}
}
static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock)
static __always_inline int __ticket_spin_trylock(arch_spinlock_t *lock)
{
int tmp = ACCESS_ONCE(lock->lock);
@@ -67,7 +67,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock)
return 0;
}
static __always_inline void __ticket_spin_unlock(raw_spinlock_t *lock)
static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock)
{
unsigned short *p = (unsigned short *)&lock->lock + 1, tmp;
@@ -75,7 +75,7 @@ static __always_inline void __ticket_spin_unlock(raw_spinlock_t *lock)
ACCESS_ONCE(*p) = (tmp + 2) & ~1;
}
static __always_inline void __ticket_spin_unlock_wait(raw_spinlock_t *lock)
static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock)
{
int *p = (int *)&lock->lock, ticket;
@@ -89,64 +89,64 @@ static __always_inline void __ticket_spin_unlock_wait(raw_spinlock_t *lock)
}
}
static inline int __ticket_spin_is_locked(raw_spinlock_t *lock)
static inline int __ticket_spin_is_locked(arch_spinlock_t *lock)
{
long tmp = ACCESS_ONCE(lock->lock);
return !!(((tmp >> TICKET_SHIFT) ^ tmp) & TICKET_MASK);
}
static inline int __ticket_spin_is_contended(raw_spinlock_t *lock)
static inline int __ticket_spin_is_contended(arch_spinlock_t *lock)
{
long tmp = ACCESS_ONCE(lock->lock);
return ((tmp - (tmp >> TICKET_SHIFT)) & TICKET_MASK) > 1;
}
static inline int __raw_spin_is_locked(raw_spinlock_t *lock)
static inline int arch_spin_is_locked(arch_spinlock_t *lock)
{
return __ticket_spin_is_locked(lock);
}
static inline int __raw_spin_is_contended(raw_spinlock_t *lock)
static inline int arch_spin_is_contended(arch_spinlock_t *lock)
{
return __ticket_spin_is_contended(lock);
}
#define __raw_spin_is_contended __raw_spin_is_contended
#define arch_spin_is_contended arch_spin_is_contended
static __always_inline void __raw_spin_lock(raw_spinlock_t *lock)
static __always_inline void arch_spin_lock(arch_spinlock_t *lock)
{
__ticket_spin_lock(lock);
}
static __always_inline int __raw_spin_trylock(raw_spinlock_t *lock)
static __always_inline int arch_spin_trylock(arch_spinlock_t *lock)
{
return __ticket_spin_trylock(lock);
}
static __always_inline void __raw_spin_unlock(raw_spinlock_t *lock)
static __always_inline void arch_spin_unlock(arch_spinlock_t *lock)
{
__ticket_spin_unlock(lock);
}
static __always_inline void __raw_spin_lock_flags(raw_spinlock_t *lock,
static __always_inline void arch_spin_lock_flags(arch_spinlock_t *lock,
unsigned long flags)
{
__raw_spin_lock(lock);
arch_spin_lock(lock);
}
static inline void __raw_spin_unlock_wait(raw_spinlock_t *lock)
static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
{
__ticket_spin_unlock_wait(lock);
}
#define __raw_read_can_lock(rw) (*(volatile int *)(rw) >= 0)
#define __raw_write_can_lock(rw) (*(volatile int *)(rw) == 0)
#define arch_read_can_lock(rw) (*(volatile int *)(rw) >= 0)
#define arch_write_can_lock(rw) (*(volatile int *)(rw) == 0)
#ifdef ASM_SUPPORTED
static __always_inline void
__raw_read_lock_flags(raw_rwlock_t *lock, unsigned long flags)
arch_read_lock_flags(arch_rwlock_t *lock, unsigned long flags)
{
__asm__ __volatile__ (
"tbit.nz p6, p0 = %1,%2\n"
@@ -169,15 +169,15 @@ __raw_read_lock_flags(raw_rwlock_t *lock, unsigned long flags)
: "p6", "p7", "r2", "memory");
}
#define __raw_read_lock(lock) __raw_read_lock_flags(lock, 0)
#define arch_read_lock(lock) arch_read_lock_flags(lock, 0)
#else /* !ASM_SUPPORTED */
#define __raw_read_lock_flags(rw, flags) __raw_read_lock(rw)
#define arch_read_lock_flags(rw, flags) arch_read_lock(rw)
#define __raw_read_lock(rw) \
#define arch_read_lock(rw) \
do { \
raw_rwlock_t *__read_lock_ptr = (rw); \
arch_rwlock_t *__read_lock_ptr = (rw); \
\
while (unlikely(ia64_fetchadd(1, (int *) __read_lock_ptr, acq) < 0)) { \
ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \
@@ -188,16 +188,16 @@ do { \
#endif /* !ASM_SUPPORTED */
#define __raw_read_unlock(rw) \
#define arch_read_unlock(rw) \
do { \
raw_rwlock_t *__read_lock_ptr = (rw); \
arch_rwlock_t *__read_lock_ptr = (rw); \
ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \
} while (0)
#ifdef ASM_SUPPORTED
static __always_inline void
__raw_write_lock_flags(raw_rwlock_t *lock, unsigned long flags)
arch_write_lock_flags(arch_rwlock_t *lock, unsigned long flags)
{
__asm__ __volatile__ (
"tbit.nz p6, p0 = %1, %2\n"
@@ -221,9 +221,9 @@ __raw_write_lock_flags(raw_rwlock_t *lock, unsigned long flags)
: "ar.ccv", "p6", "p7", "r2", "r29", "memory");
}
#define __raw_write_lock(rw) __raw_write_lock_flags(rw, 0)
#define arch_write_lock(rw) arch_write_lock_flags(rw, 0)
#define __raw_write_trylock(rw) \
#define arch_write_trylock(rw) \
({ \
register long result; \
\
@@ -235,7 +235,7 @@ __raw_write_lock_flags(raw_rwlock_t *lock, unsigned long flags)
(result == 0); \
})
static inline void __raw_write_unlock(raw_rwlock_t *x)
static inline void arch_write_unlock(arch_rwlock_t *x)
{
u8 *y = (u8 *)x;
barrier();
@@ -244,9 +244,9 @@ static inline void __raw_write_unlock(raw_rwlock_t *x)
#else /* !ASM_SUPPORTED */
#define __raw_write_lock_flags(l, flags) __raw_write_lock(l)
#define arch_write_lock_flags(l, flags) arch_write_lock(l)
#define __raw_write_lock(l) \
#define arch_write_lock(l) \
({ \
__u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1); \
__u32 *ia64_write_lock_ptr = (__u32 *) (l); \
@@ -257,7 +257,7 @@ static inline void __raw_write_unlock(raw_rwlock_t *x)
} while (ia64_val); \
})
#define __raw_write_trylock(rw) \
#define arch_write_trylock(rw) \
({ \
__u64 ia64_val; \
__u64 ia64_set_val = ia64_dep_mi(-1, 0, 31,1); \
@@ -265,7 +265,7 @@ static inline void __raw_write_unlock(raw_rwlock_t *x)
(ia64_val == 0); \
})
static inline void __raw_write_unlock(raw_rwlock_t *x)
static inline void arch_write_unlock(arch_rwlock_t *x)
{
barrier();
x->write_lock = 0;
@@ -273,10 +273,10 @@ static inline void __raw_write_unlock(raw_rwlock_t *x)
#endif /* !ASM_SUPPORTED */
static inline int __raw_read_trylock(raw_rwlock_t *x)
static inline int arch_read_trylock(arch_rwlock_t *x)
{
union {
raw_rwlock_t lock;
arch_rwlock_t lock;
__u32 word;
} old, new;
old.lock = new.lock = *x;
@@ -285,8 +285,8 @@ static inline int __raw_read_trylock(raw_rwlock_t *x)
return (u32)ia64_cmpxchg4_acq((__u32 *)(x), new.word, old.word) == old.word;
}
#define _raw_spin_relax(lock) cpu_relax()
#define _raw_read_relax(lock) cpu_relax()
#define _raw_write_relax(lock) cpu_relax()
#define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax()
#define arch_write_relax(lock) cpu_relax()
#endif /* _ASM_IA64_SPINLOCK_H */

8
arch/ia64/include/asm/spinlock_types.h
View File

@@ -7,15 +7,15 @@
typedef struct {
volatile unsigned int lock;
} raw_spinlock_t;
} arch_spinlock_t;
#define __RAW_SPIN_LOCK_UNLOCKED { 0 }
#define __ARCH_SPIN_LOCK_UNLOCKED { 0 }
typedef struct {
volatile unsigned int read_counter : 31;
volatile unsigned int write_lock : 1;
} raw_rwlock_t;
} arch_rwlock_t;
#define __RAW_RW_LOCK_UNLOCKED { 0, 0 }
#define __ARCH_RW_LOCK_UNLOCKED { 0, 0 }
#endif