GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-06 22:58:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

locking: Convert raw_rwlock functions to arch_rwlock

Browse source 
Name space cleanup for rwlock functions. No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org
This commit is contained in:
Thomas Gleixner 2009-12-03 20:08:46 +01:00
parent fb3a6bbc91
commit e5931943d0
18 changed files with 215 additions and 215 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
arch/alpha/include/asm/spinlock.h
View file

@ -50,17 +50,17 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
/***********************************************************/ /***********************************************************/
static inline int __raw_read_can_lock(arch_rwlock_t *lock) static inline int arch_read_can_lock(arch_rwlock_t *lock)
{ {
return (lock->lock & 1) == 0; return (lock->lock & 1) == 0;
} }
static inline int __raw_write_can_lock(arch_rwlock_t *lock) static inline int arch_write_can_lock(arch_rwlock_t *lock)
{ {
return lock->lock == 0; return lock->lock == 0;
} }
static inline void __raw_read_lock(arch_rwlock_t *lock) static inline void arch_read_lock(arch_rwlock_t *lock)
{ {
long regx; long regx;
@ -80,7 +80,7 @@ static inline void __raw_read_lock(arch_rwlock_t *lock)
: "m" (*lock) : "memory"); : "m" (*lock) : "memory");
} }
static inline void __raw_write_lock(arch_rwlock_t *lock) static inline void arch_write_lock(arch_rwlock_t *lock)
{ {
long regx; long regx;
@ -100,7 +100,7 @@ static inline void __raw_write_lock(arch_rwlock_t *lock)
: "m" (*lock) : "memory"); : "m" (*lock) : "memory");
} }
static inline int __raw_read_trylock(arch_rwlock_t * lock) static inline int arch_read_trylock(arch_rwlock_t * lock)
{ {
long regx; long regx;
int success; int success;
@ -122,7 +122,7 @@ static inline int __raw_read_trylock(arch_rwlock_t * lock)
return success; return success;
} }
static inline int __raw_write_trylock(arch_rwlock_t * lock) static inline int arch_write_trylock(arch_rwlock_t * lock)
{ {
long regx; long regx;
int success; int success;
@ -144,7 +144,7 @@ static inline int __raw_write_trylock(arch_rwlock_t * lock)
return success; return success;
} }
static inline void __raw_read_unlock(arch_rwlock_t * lock) static inline void arch_read_unlock(arch_rwlock_t * lock)
{ {
long regx; long regx;
__asm__ __volatile__( __asm__ __volatile__(
@ -160,14 +160,14 @@ static inline void __raw_read_unlock(arch_rwlock_t * lock)
: "m" (*lock) : "memory"); : "m" (*lock) : "memory");
} }
static inline void __raw_write_unlock(arch_rwlock_t * lock) static inline void arch_write_unlock(arch_rwlock_t * lock)
{ {
mb(); mb();
lock->lock = 0; lock->lock = 0;
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

20
arch/arm/include/asm/spinlock.h
View file

@ -86,7 +86,7 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
* just write zero since the lock is exclusively held. * just write zero since the lock is exclusively held.
*/ */
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
unsigned long tmp; unsigned long tmp;
@ -106,7 +106,7 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
smp_mb(); smp_mb();
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
unsigned long tmp; unsigned long tmp;
@ -126,7 +126,7 @@ static inline int __raw_write_trylock(arch_rwlock_t *rw)
} }
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
smp_mb(); smp_mb();
@ -142,7 +142,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *rw)
} }
/* write_can_lock - would write_trylock() succeed? */ /* write_can_lock - would write_trylock() succeed? */
#define __raw_write_can_lock(x) ((x)->lock == 0) #define arch_write_can_lock(x) ((x)->lock == 0)
/* /*
* Read locks are a bit more hairy: * Read locks are a bit more hairy:
@ -156,7 +156,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *rw)
* currently active. However, we know we won't have any write * currently active. However, we know we won't have any write
* locks. * locks.
*/ */
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
unsigned long tmp, tmp2; unsigned long tmp, tmp2;
@ -176,7 +176,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
smp_mb(); smp_mb();
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
unsigned long tmp, tmp2; unsigned long tmp, tmp2;
@ -198,7 +198,7 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
: "cc"); : "cc");
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
unsigned long tmp, tmp2 = 1; unsigned long tmp, tmp2 = 1;
@ -215,10 +215,10 @@ static inline int __raw_read_trylock(arch_rwlock_t *rw)
} }
/* read_can_lock - would read_trylock() succeed? */ /* read_can_lock - would read_trylock() succeed? */
#define __raw_read_can_lock(x) ((x)->lock < 0x80000000) #define arch_read_can_lock(x) ((x)->lock < 0x80000000)
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

40
arch/blackfin/include/asm/spinlock.h
View file

@ -17,12 +17,12 @@ asmlinkage int __raw_spin_is_locked_asm(volatile int *ptr);
asmlinkage void __raw_spin_lock_asm(volatile int *ptr); asmlinkage void __raw_spin_lock_asm(volatile int *ptr);
asmlinkage int __raw_spin_trylock_asm(volatile int *ptr); asmlinkage int __raw_spin_trylock_asm(volatile int *ptr);
asmlinkage void __raw_spin_unlock_asm(volatile int *ptr); asmlinkage void __raw_spin_unlock_asm(volatile int *ptr);
asmlinkage void __raw_read_lock_asm(volatile int *ptr); asmlinkage void arch_read_lock_asm(volatile int *ptr);
asmlinkage int __raw_read_trylock_asm(volatile int *ptr); asmlinkage int arch_read_trylock_asm(volatile int *ptr);
asmlinkage void __raw_read_unlock_asm(volatile int *ptr); asmlinkage void arch_read_unlock_asm(volatile int *ptr);
asmlinkage void __raw_write_lock_asm(volatile int *ptr); asmlinkage void arch_write_lock_asm(volatile int *ptr);
asmlinkage int __raw_write_trylock_asm(volatile int *ptr); asmlinkage int arch_write_trylock_asm(volatile int *ptr);
asmlinkage void __raw_write_unlock_asm(volatile int *ptr); asmlinkage void arch_write_unlock_asm(volatile int *ptr);
static inline int arch_spin_is_locked(arch_spinlock_t *lock) static inline int arch_spin_is_locked(arch_spinlock_t *lock)
{ {
@ -52,44 +52,44 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
cpu_relax(); cpu_relax();
} }
static inline int __raw_read_can_lock(arch_rwlock_t *rw) static inline int arch_read_can_lock(arch_rwlock_t *rw)
{ {
return __raw_uncached_fetch_asm(&rw->lock) > 0; return __raw_uncached_fetch_asm(&rw->lock) > 0;
} }
static inline int __raw_write_can_lock(arch_rwlock_t *rw) static inline int arch_write_can_lock(arch_rwlock_t *rw)
{ {
return __raw_uncached_fetch_asm(&rw->lock) == RW_LOCK_BIAS; return __raw_uncached_fetch_asm(&rw->lock) == RW_LOCK_BIAS;
} }
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
__raw_read_lock_asm(&rw->lock); arch_read_lock_asm(&rw->lock);
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
return __raw_read_trylock_asm(&rw->lock); return arch_read_trylock_asm(&rw->lock);
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
__raw_read_unlock_asm(&rw->lock); arch_read_unlock_asm(&rw->lock);
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
__raw_write_lock_asm(&rw->lock); arch_write_lock_asm(&rw->lock);
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
return __raw_write_trylock_asm(&rw->lock); return arch_write_trylock_asm(&rw->lock);
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
__raw_write_unlock_asm(&rw->lock); arch_write_unlock_asm(&rw->lock);
} }
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()

16
arch/cris/include/arch-v32/arch/spinlock.h
View file

@ -56,17 +56,17 @@ arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
* *
*/ */
static inline int __raw_read_can_lock(arch_rwlock_t *x) static inline int arch_read_can_lock(arch_rwlock_t *x)
{ {
return (int)(x)->lock > 0; return (int)(x)->lock > 0;
} }
static inline int __raw_write_can_lock(arch_rwlock_t *x) static inline int arch_write_can_lock(arch_rwlock_t *x)
{ {
return (x)->lock == RW_LOCK_BIAS; return (x)->lock == RW_LOCK_BIAS;
} }
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
arch_spin_lock(&rw->slock); arch_spin_lock(&rw->slock);
while (rw->lock == 0); while (rw->lock == 0);
@ -74,7 +74,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
arch_spin_unlock(&rw->slock); arch_spin_unlock(&rw->slock);
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
arch_spin_lock(&rw->slock); arch_spin_lock(&rw->slock);
while (rw->lock != RW_LOCK_BIAS); while (rw->lock != RW_LOCK_BIAS);
@ -82,14 +82,14 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
arch_spin_unlock(&rw->slock); arch_spin_unlock(&rw->slock);
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
arch_spin_lock(&rw->slock); arch_spin_lock(&rw->slock);
rw->lock++; rw->lock++;
arch_spin_unlock(&rw->slock); arch_spin_unlock(&rw->slock);
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
arch_spin_lock(&rw->slock); arch_spin_lock(&rw->slock);
while (rw->lock != RW_LOCK_BIAS); while (rw->lock != RW_LOCK_BIAS);
@ -97,7 +97,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *rw)
arch_spin_unlock(&rw->slock); arch_spin_unlock(&rw->slock);
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
int ret = 0; int ret = 0;
arch_spin_lock(&rw->slock); arch_spin_lock(&rw->slock);
@ -109,7 +109,7 @@ static inline int __raw_read_trylock(arch_rwlock_t *rw)
return ret; return ret;
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
int ret = 0; int ret = 0;
arch_spin_lock(&rw->slock); arch_spin_lock(&rw->slock);

32
arch/ia64/include/asm/spinlock.h
View file

@ -140,13 +140,13 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
__ticket_spin_unlock_wait(lock); __ticket_spin_unlock_wait(lock);
} }
#define __raw_read_can_lock(rw) (*(volatile int *)(rw) >= 0) #define arch_read_can_lock(rw) (*(volatile int *)(rw) >= 0)
#define __raw_write_can_lock(rw) (*(volatile int *)(rw) == 0) #define arch_write_can_lock(rw) (*(volatile int *)(rw) == 0)
#ifdef ASM_SUPPORTED #ifdef ASM_SUPPORTED
static __always_inline void static __always_inline void
__raw_read_lock_flags(arch_rwlock_t *lock, unsigned long flags) arch_read_lock_flags(arch_rwlock_t *lock, unsigned long flags)
{ {
__asm__ __volatile__ ( __asm__ __volatile__ (
"tbit.nz p6, p0 = %1,%2\n" "tbit.nz p6, p0 = %1,%2\n"
@ -169,13 +169,13 @@ __raw_read_lock_flags(arch_rwlock_t *lock, unsigned long flags)
: "p6", "p7", "r2", "memory"); : "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 */ #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 { \ do { \
arch_rwlock_t *__read_lock_ptr = (rw); \ arch_rwlock_t *__read_lock_ptr = (rw); \
\ \
@ -188,7 +188,7 @@ do { \
#endif /* !ASM_SUPPORTED */ #endif /* !ASM_SUPPORTED */
#define __raw_read_unlock(rw) \ #define arch_read_unlock(rw) \
do { \ do { \
arch_rwlock_t *__read_lock_ptr = (rw); \ arch_rwlock_t *__read_lock_ptr = (rw); \
ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \ ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \
@ -197,7 +197,7 @@ do { \
#ifdef ASM_SUPPORTED #ifdef ASM_SUPPORTED
static __always_inline void static __always_inline void
__raw_write_lock_flags(arch_rwlock_t *lock, unsigned long flags) arch_write_lock_flags(arch_rwlock_t *lock, unsigned long flags)
{ {
__asm__ __volatile__ ( __asm__ __volatile__ (
"tbit.nz p6, p0 = %1, %2\n" "tbit.nz p6, p0 = %1, %2\n"
@ -221,9 +221,9 @@ __raw_write_lock_flags(arch_rwlock_t *lock, unsigned long flags)
: "ar.ccv", "p6", "p7", "r2", "r29", "memory"); : "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; \ register long result; \
\ \
@ -235,7 +235,7 @@ __raw_write_lock_flags(arch_rwlock_t *lock, unsigned long flags)
(result == 0); \ (result == 0); \
}) })
static inline void __raw_write_unlock(arch_rwlock_t *x) static inline void arch_write_unlock(arch_rwlock_t *x)
{ {
u8 *y = (u8 *)x; u8 *y = (u8 *)x;
barrier(); barrier();
@ -244,9 +244,9 @@ static inline void __raw_write_unlock(arch_rwlock_t *x)
#else /* !ASM_SUPPORTED */ #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); \ __u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1); \
__u32 *ia64_write_lock_ptr = (__u32 *) (l); \ __u32 *ia64_write_lock_ptr = (__u32 *) (l); \
@ -257,7 +257,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *x)
} while (ia64_val); \ } while (ia64_val); \
}) })
#define __raw_write_trylock(rw) \ #define arch_write_trylock(rw) \
({ \ ({ \
__u64 ia64_val; \ __u64 ia64_val; \
__u64 ia64_set_val = ia64_dep_mi(-1, 0, 31,1); \ __u64 ia64_set_val = ia64_dep_mi(-1, 0, 31,1); \
@ -265,7 +265,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *x)
(ia64_val == 0); \ (ia64_val == 0); \
}) })
static inline void __raw_write_unlock(arch_rwlock_t *x) static inline void arch_write_unlock(arch_rwlock_t *x)
{ {
barrier(); barrier();
x->write_lock = 0; x->write_lock = 0;
@ -273,7 +273,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *x)
#endif /* !ASM_SUPPORTED */ #endif /* !ASM_SUPPORTED */
static inline int __raw_read_trylock(arch_rwlock_t *x) static inline int arch_read_trylock(arch_rwlock_t *x)
{ {
union { union {
arch_rwlock_t lock; arch_rwlock_t lock;

20
arch/m32r/include/asm/spinlock.h
View file

@ -140,15 +140,15 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
* read_can_lock - would read_trylock() succeed? * read_can_lock - would read_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_read_can_lock(x) ((int)(x)->lock > 0) #define arch_read_can_lock(x) ((int)(x)->lock > 0)
/** /**
* write_can_lock - would write_trylock() succeed? * write_can_lock - would write_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) #define arch_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS)
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
unsigned long tmp0, tmp1; unsigned long tmp0, tmp1;
@ -199,7 +199,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
); );
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
unsigned long tmp0, tmp1, tmp2; unsigned long tmp0, tmp1, tmp2;
@ -252,7 +252,7 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
); );
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
unsigned long tmp0, tmp1; unsigned long tmp0, tmp1;
@ -274,7 +274,7 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
); );
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
unsigned long tmp0, tmp1, tmp2; unsigned long tmp0, tmp1, tmp2;
@ -298,7 +298,7 @@ static inline void __raw_write_unlock(arch_rwlock_t *rw)
); );
} }
static inline int __raw_read_trylock(arch_rwlock_t *lock) static inline int arch_read_trylock(arch_rwlock_t *lock)
{ {
atomic_t *count = (atomic_t*)lock; atomic_t *count = (atomic_t*)lock;
if (atomic_dec_return(count) >= 0) if (atomic_dec_return(count) >= 0)
@ -307,7 +307,7 @@ static inline int __raw_read_trylock(arch_rwlock_t *lock)
return 0; return 0;
} }
static inline int __raw_write_trylock(arch_rwlock_t *lock) static inline int arch_write_trylock(arch_rwlock_t *lock)
{ {
atomic_t *count = (atomic_t *)lock; atomic_t *count = (atomic_t *)lock;
if (atomic_sub_and_test(RW_LOCK_BIAS, count)) if (atomic_sub_and_test(RW_LOCK_BIAS, count))
@ -316,8 +316,8 @@ static inline int __raw_write_trylock(arch_rwlock_t *lock)
return 0; return 0;
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

42
arch/mips/include/asm/spinlock.h
View file

@ -248,21 +248,21 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock)
* read_can_lock - would read_trylock() succeed? * read_can_lock - would read_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_read_can_lock(rw) ((rw)->lock >= 0) #define arch_read_can_lock(rw) ((rw)->lock >= 0)
/* /*
* write_can_lock - would write_trylock() succeed? * write_can_lock - would write_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_write_can_lock(rw) (!(rw)->lock) #define arch_write_can_lock(rw) (!(rw)->lock)
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
unsigned int tmp; unsigned int tmp;
if (R10000_LLSC_WAR) { if (R10000_LLSC_WAR) {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_read_lock \n" " .set noreorder # arch_read_lock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" bltz %1, 1b \n" " bltz %1, 1b \n"
" addu %1, 1 \n" " addu %1, 1 \n"
@ -275,7 +275,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
: "memory"); : "memory");
} else { } else {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_read_lock \n" " .set noreorder # arch_read_lock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" bltz %1, 2f \n" " bltz %1, 2f \n"
" addu %1, 1 \n" " addu %1, 1 \n"
@ -301,7 +301,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
/* Note the use of sub, not subu which will make the kernel die with an /* Note the use of sub, not subu which will make the kernel die with an
overflow exception if we ever try to unlock an rwlock that is already overflow exception if we ever try to unlock an rwlock that is already
unlocked or is being held by a writer. */ unlocked or is being held by a writer. */
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
unsigned int tmp; unsigned int tmp;
@ -309,7 +309,7 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
if (R10000_LLSC_WAR) { if (R10000_LLSC_WAR) {
__asm__ __volatile__( __asm__ __volatile__(
"1: ll %1, %2 # __raw_read_unlock \n" "1: ll %1, %2 # arch_read_unlock \n"
" sub %1, 1 \n" " sub %1, 1 \n"
" sc %1, %0 \n" " sc %1, %0 \n"
" beqzl %1, 1b \n" " beqzl %1, 1b \n"
@ -318,7 +318,7 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
: "memory"); : "memory");
} else { } else {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_read_unlock \n" " .set noreorder # arch_read_unlock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" sub %1, 1 \n" " sub %1, 1 \n"
" sc %1, %0 \n" " sc %1, %0 \n"
@ -335,13 +335,13 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
} }
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
unsigned int tmp; unsigned int tmp;
if (R10000_LLSC_WAR) { if (R10000_LLSC_WAR) {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_write_lock \n" " .set noreorder # arch_write_lock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" bnez %1, 1b \n" " bnez %1, 1b \n"
" lui %1, 0x8000 \n" " lui %1, 0x8000 \n"
@ -354,7 +354,7 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
: "memory"); : "memory");
} else { } else {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_write_lock \n" " .set noreorder # arch_write_lock \n"
"1: ll %1, %2 \n" "1: ll %1, %2 \n"
" bnez %1, 2f \n" " bnez %1, 2f \n"
" lui %1, 0x8000 \n" " lui %1, 0x8000 \n"
@ -377,26 +377,26 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
smp_llsc_mb(); smp_llsc_mb();
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
smp_mb(); smp_mb();
__asm__ __volatile__( __asm__ __volatile__(
" # __raw_write_unlock \n" " # arch_write_unlock \n"
" sw $0, %0 \n" " sw $0, %0 \n"
: "=m" (rw->lock) : "=m" (rw->lock)
: "m" (rw->lock) : "m" (rw->lock)
: "memory"); : "memory");
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
unsigned int tmp; unsigned int tmp;
int ret; int ret;
if (R10000_LLSC_WAR) { if (R10000_LLSC_WAR) {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_read_trylock \n" " .set noreorder # arch_read_trylock \n"
" li %2, 0 \n" " li %2, 0 \n"
"1: ll %1, %3 \n" "1: ll %1, %3 \n"
" bltz %1, 2f \n" " bltz %1, 2f \n"
@ -413,7 +413,7 @@ static inline int __raw_read_trylock(arch_rwlock_t *rw)
: "memory"); : "memory");
} else { } else {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_read_trylock \n" " .set noreorder # arch_read_trylock \n"
" li %2, 0 \n" " li %2, 0 \n"
"1: ll %1, %3 \n" "1: ll %1, %3 \n"
" bltz %1, 2f \n" " bltz %1, 2f \n"
@ -433,14 +433,14 @@ static inline int __raw_read_trylock(arch_rwlock_t *rw)
return ret; return ret;
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
unsigned int tmp; unsigned int tmp;
int ret; int ret;
if (R10000_LLSC_WAR) { if (R10000_LLSC_WAR) {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_write_trylock \n" " .set noreorder # arch_write_trylock \n"
" li %2, 0 \n" " li %2, 0 \n"
"1: ll %1, %3 \n" "1: ll %1, %3 \n"
" bnez %1, 2f \n" " bnez %1, 2f \n"
@ -457,7 +457,7 @@ static inline int __raw_write_trylock(arch_rwlock_t *rw)
: "memory"); : "memory");
} else { } else {
__asm__ __volatile__( __asm__ __volatile__(
" .set noreorder # __raw_write_trylock \n" " .set noreorder # arch_write_trylock \n"
" li %2, 0 \n" " li %2, 0 \n"
"1: ll %1, %3 \n" "1: ll %1, %3 \n"
" bnez %1, 2f \n" " bnez %1, 2f \n"
@ -480,8 +480,8 @@ static inline int __raw_write_trylock(arch_rwlock_t *rw)
return ret; return ret;
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

20
arch/parisc/include/asm/spinlock.h
View file

@ -69,7 +69,7 @@ static inline int arch_spin_trylock(arch_spinlock_t *x)
/* Note that we have to ensure interrupts are disabled in case we're /* Note that we have to ensure interrupts are disabled in case we're
* interrupted by some other code that wants to grab the same read lock */ * interrupted by some other code that wants to grab the same read lock */
static __inline__ void __raw_read_lock(arch_rwlock_t *rw) static __inline__ void arch_read_lock(arch_rwlock_t *rw)
{ {
unsigned long flags; unsigned long flags;
local_irq_save(flags); local_irq_save(flags);
@ -81,7 +81,7 @@ static __inline__ void __raw_read_lock(arch_rwlock_t *rw)
/* Note that we have to ensure interrupts are disabled in case we're /* Note that we have to ensure interrupts are disabled in case we're
* interrupted by some other code that wants to grab the same read lock */ * interrupted by some other code that wants to grab the same read lock */
static __inline__ void __raw_read_unlock(arch_rwlock_t *rw) static __inline__ void arch_read_unlock(arch_rwlock_t *rw)
{ {
unsigned long flags; unsigned long flags;
local_irq_save(flags); local_irq_save(flags);
@ -93,7 +93,7 @@ static __inline__ void __raw_read_unlock(arch_rwlock_t *rw)
/* Note that we have to ensure interrupts are disabled in case we're /* Note that we have to ensure interrupts are disabled in case we're
* interrupted by some other code that wants to grab the same read lock */ * interrupted by some other code that wants to grab the same read lock */
static __inline__ int __raw_read_trylock(arch_rwlock_t *rw) static __inline__ int arch_read_trylock(arch_rwlock_t *rw)
{ {
unsigned long flags; unsigned long flags;
retry: retry:
@ -119,7 +119,7 @@ static __inline__ int __raw_read_trylock(arch_rwlock_t *rw)
/* Note that we have to ensure interrupts are disabled in case we're /* Note that we have to ensure interrupts are disabled in case we're
* interrupted by some other code that wants to read_trylock() this lock */ * interrupted by some other code that wants to read_trylock() this lock */
static __inline__ void __raw_write_lock(arch_rwlock_t *rw) static __inline__ void arch_write_lock(arch_rwlock_t *rw)
{ {
unsigned long flags; unsigned long flags;
retry: retry:
@ -141,7 +141,7 @@ retry:
local_irq_restore(flags); local_irq_restore(flags);
} }
static __inline__ void __raw_write_unlock(arch_rwlock_t *rw) static __inline__ void arch_write_unlock(arch_rwlock_t *rw)
{ {
rw->counter = 0; rw->counter = 0;
arch_spin_unlock(&rw->lock); arch_spin_unlock(&rw->lock);
@ -149,7 +149,7 @@ static __inline__ void __raw_write_unlock(arch_rwlock_t *rw)
/* Note that we have to ensure interrupts are disabled in case we're /* Note that we have to ensure interrupts are disabled in case we're
* interrupted by some other code that wants to read_trylock() this lock */ * interrupted by some other code that wants to read_trylock() this lock */
static __inline__ int __raw_write_trylock(arch_rwlock_t *rw) static __inline__ int arch_write_trylock(arch_rwlock_t *rw)
{ {
unsigned long flags; unsigned long flags;
int result = 0; int result = 0;
@ -173,7 +173,7 @@ static __inline__ int __raw_write_trylock(arch_rwlock_t *rw)
* read_can_lock - would read_trylock() succeed? * read_can_lock - would read_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
static __inline__ int __raw_read_can_lock(arch_rwlock_t *rw) static __inline__ int arch_read_can_lock(arch_rwlock_t *rw)
{ {
return rw->counter >= 0; return rw->counter >= 0;
} }
@ -182,13 +182,13 @@ static __inline__ int __raw_read_can_lock(arch_rwlock_t *rw)
* write_can_lock - would write_trylock() succeed? * write_can_lock - would write_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
static __inline__ int __raw_write_can_lock(arch_rwlock_t *rw) static __inline__ int arch_write_can_lock(arch_rwlock_t *rw)
{ {
return !rw->counter; return !rw->counter;
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

32
arch/powerpc/include/asm/spinlock.h
View file

@ -166,8 +166,8 @@ extern void arch_spin_unlock_wait(arch_spinlock_t *lock);
* read-locks. * read-locks.
*/ */
#define __raw_read_can_lock(rw) ((rw)->lock >= 0) #define arch_read_can_lock(rw) ((rw)->lock >= 0)
#define __raw_write_can_lock(rw) (!(rw)->lock) #define arch_write_can_lock(rw) (!(rw)->lock)
#ifdef CONFIG_PPC64 #ifdef CONFIG_PPC64
#define __DO_SIGN_EXTEND "extsw %0,%0\n" #define __DO_SIGN_EXTEND "extsw %0,%0\n"
@ -181,7 +181,7 @@ extern void arch_spin_unlock_wait(arch_spinlock_t *lock);
* This returns the old value in the lock + 1, * This returns the old value in the lock + 1,
* so we got a read lock if the return value is > 0. * so we got a read lock if the return value is > 0.
*/ */
static inline long arch_read_trylock(arch_rwlock_t *rw) static inline long __arch_read_trylock(arch_rwlock_t *rw)
{ {
long tmp; long tmp;
@ -205,7 +205,7 @@ static inline long arch_read_trylock(arch_rwlock_t *rw)
* This returns the old value in the lock, * This returns the old value in the lock,
* so we got the write lock if the return value is 0. * so we got the write lock if the return value is 0.
*/ */
static inline long arch_write_trylock(arch_rwlock_t *rw) static inline long __arch_write_trylock(arch_rwlock_t *rw)
{ {
long tmp, token; long tmp, token;
@ -225,10 +225,10 @@ static inline long arch_write_trylock(arch_rwlock_t *rw)
return tmp; return tmp;
} }
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
while (1) { while (1) {
if (likely(arch_read_trylock(rw) > 0)) if (likely(__arch_read_trylock(rw) > 0))
break; break;
do { do {
HMT_low(); HMT_low();
@ -239,10 +239,10 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
} }
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
while (1) { while (1) {
if (likely(arch_write_trylock(rw) == 0)) if (likely(__arch_write_trylock(rw) == 0))
break; break;
do { do {
HMT_low(); HMT_low();
@ -253,17 +253,17 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
} }
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
return arch_read_trylock(rw) > 0; return __arch_read_trylock(rw) > 0;
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
return arch_write_trylock(rw) == 0; return __arch_write_trylock(rw) == 0;
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
long tmp; long tmp;
@ -280,15 +280,15 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
: "cr0", "xer", "memory"); : "cr0", "xer", "memory");
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
__asm__ __volatile__("# write_unlock\n\t" __asm__ __volatile__("# write_unlock\n\t"
LWSYNC_ON_SMP: : :"memory"); LWSYNC_ON_SMP: : :"memory");
rw->lock = 0; rw->lock = 0;
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) __spin_yield(lock) #define arch_spin_relax(lock) __spin_yield(lock)
#define arch_read_relax(lock) __rw_yield(lock) #define arch_read_relax(lock) __rw_yield(lock)

20
arch/s390/include/asm/spinlock.h
View file

@ -113,13 +113,13 @@ static inline void arch_spin_unlock(arch_spinlock_t *lp)
* read_can_lock - would read_trylock() succeed? * read_can_lock - would read_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_read_can_lock(x) ((int)(x)->lock >= 0) #define arch_read_can_lock(x) ((int)(x)->lock >= 0)
/** /**
* write_can_lock - would write_trylock() succeed? * write_can_lock - would write_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_write_can_lock(x) ((x)->lock == 0) #define arch_write_can_lock(x) ((x)->lock == 0)
extern void _raw_read_lock_wait(arch_rwlock_t *lp); extern void _raw_read_lock_wait(arch_rwlock_t *lp);
extern void _raw_read_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags); extern void _raw_read_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags);
@ -128,7 +128,7 @@ extern void _raw_write_lock_wait(arch_rwlock_t *lp);
extern void _raw_write_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags); extern void _raw_write_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags);
extern int _raw_write_trylock_retry(arch_rwlock_t *lp); extern int _raw_write_trylock_retry(arch_rwlock_t *lp);
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
unsigned int old; unsigned int old;
old = rw->lock & 0x7fffffffU; old = rw->lock & 0x7fffffffU;
@ -136,7 +136,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
_raw_read_lock_wait(rw); _raw_read_lock_wait(rw);
} }
static inline void __raw_read_lock_flags(arch_rwlock_t *rw, unsigned long flags) static inline void arch_read_lock_flags(arch_rwlock_t *rw, unsigned long flags)
{ {
unsigned int old; unsigned int old;
old = rw->lock & 0x7fffffffU; old = rw->lock & 0x7fffffffU;
@ -144,7 +144,7 @@ static inline void __raw_read_lock_flags(arch_rwlock_t *rw, unsigned long flags)
_raw_read_lock_wait_flags(rw, flags); _raw_read_lock_wait_flags(rw, flags);
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
unsigned int old, cmp; unsigned int old, cmp;
@ -155,24 +155,24 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
} while (cmp != old); } while (cmp != old);
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0)) if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0))
_raw_write_lock_wait(rw); _raw_write_lock_wait(rw);
} }
static inline void __raw_write_lock_flags(arch_rwlock_t *rw, unsigned long flags) static inline void arch_write_lock_flags(arch_rwlock_t *rw, unsigned long flags)
{ {
if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0)) if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0))
_raw_write_lock_wait_flags(rw, flags); _raw_write_lock_wait_flags(rw, flags);
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
_raw_compare_and_swap(&rw->lock, 0x80000000, 0); _raw_compare_and_swap(&rw->lock, 0x80000000, 0);
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
unsigned int old; unsigned int old;
old = rw->lock & 0x7fffffffU; old = rw->lock & 0x7fffffffU;
@ -181,7 +181,7 @@ static inline int __raw_read_trylock(arch_rwlock_t *rw)
return _raw_read_trylock_retry(rw); return _raw_read_trylock_retry(rw);
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
if (likely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)) if (likely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0))
return 1; return 1;

12
arch/s390/lib/spinlock.c
View file

@ -115,7 +115,7 @@ void _raw_read_lock_wait(arch_rwlock_t *rw)
_raw_yield(); _raw_yield();
count = spin_retry; count = spin_retry;
} }
if (!__raw_read_can_lock(rw)) if (!arch_read_can_lock(rw))
continue; continue;
old = rw->lock & 0x7fffffffU; old = rw->lock & 0x7fffffffU;
if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old) if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old)
@ -135,7 +135,7 @@ void _raw_read_lock_wait_flags(arch_rwlock_t *rw, unsigned long flags)
_raw_yield(); _raw_yield();
count = spin_retry; count = spin_retry;
} }
if (!__raw_read_can_lock(rw)) if (!arch_read_can_lock(rw))
continue; continue;
old = rw->lock & 0x7fffffffU; old = rw->lock & 0x7fffffffU;
local_irq_disable(); local_irq_disable();
@ -151,7 +151,7 @@ int _raw_read_trylock_retry(arch_rwlock_t *rw)
int count = spin_retry; int count = spin_retry;
while (count-- > 0) { while (count-- > 0) {
if (!__raw_read_can_lock(rw)) if (!arch_read_can_lock(rw))
continue; continue;
old = rw->lock & 0x7fffffffU; old = rw->lock & 0x7fffffffU;
if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old) if (_raw_compare_and_swap(&rw->lock, old, old + 1) == old)
@ -170,7 +170,7 @@ void _raw_write_lock_wait(arch_rwlock_t *rw)
_raw_yield(); _raw_yield();
count = spin_retry; count = spin_retry;
} }
if (!__raw_write_can_lock(rw)) if (!arch_write_can_lock(rw))
continue; continue;
if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0) if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)
return; return;
@ -188,7 +188,7 @@ void _raw_write_lock_wait_flags(arch_rwlock_t *rw, unsigned long flags)
_raw_yield(); _raw_yield();
count = spin_retry; count = spin_retry;
} }
if (!__raw_write_can_lock(rw)) if (!arch_write_can_lock(rw))
continue; continue;
local_irq_disable(); local_irq_disable();
if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0) if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)
@ -202,7 +202,7 @@ int _raw_write_trylock_retry(arch_rwlock_t *rw)
int count = spin_retry; int count = spin_retry;
while (count-- > 0) { while (count-- > 0) {
if (!__raw_write_can_lock(rw)) if (!arch_write_can_lock(rw))
continue; continue;
if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0) if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)
return 1; return 1;

32
arch/sh/include/asm/spinlock.h
View file

@ -100,21 +100,21 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
* read_can_lock - would read_trylock() succeed? * read_can_lock - would read_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_read_can_lock(x) ((x)->lock > 0) #define arch_read_can_lock(x) ((x)->lock > 0)
/** /**
* write_can_lock - would write_trylock() succeed? * write_can_lock - would write_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
#define __raw_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) #define arch_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS)
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
unsigned long tmp; unsigned long tmp;
__asm__ __volatile__ ( __asm__ __volatile__ (
"1: \n\t" "1: \n\t"
"movli.l @%1, %0 ! __raw_read_lock \n\t" "movli.l @%1, %0 ! arch_read_lock \n\t"
"cmp/pl %0 \n\t" "cmp/pl %0 \n\t"
"bf 1b \n\t" "bf 1b \n\t"
"add #-1, %0 \n\t" "add #-1, %0 \n\t"
@ -126,13 +126,13 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
); );
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
unsigned long tmp; unsigned long tmp;
__asm__ __volatile__ ( __asm__ __volatile__ (
"1: \n\t" "1: \n\t"
"movli.l @%1, %0 ! __raw_read_unlock \n\t" "movli.l @%1, %0 ! arch_read_unlock \n\t"
"add #1, %0 \n\t" "add #1, %0 \n\t"
"movco.l %0, @%1 \n\t" "movco.l %0, @%1 \n\t"
"bf 1b \n\t" "bf 1b \n\t"
@ -142,13 +142,13 @@ static inline void __raw_read_unlock(arch_rwlock_t *rw)
); );
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
unsigned long tmp; unsigned long tmp;
__asm__ __volatile__ ( __asm__ __volatile__ (
"1: \n\t" "1: \n\t"
"movli.l @%1, %0 ! __raw_write_lock \n\t" "movli.l @%1, %0 ! arch_write_lock \n\t"
"cmp/hs %2, %0 \n\t" "cmp/hs %2, %0 \n\t"
"bf 1b \n\t" "bf 1b \n\t"
"sub %2, %0 \n\t" "sub %2, %0 \n\t"
@ -160,23 +160,23 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
); );
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
__asm__ __volatile__ ( __asm__ __volatile__ (
"mov.l %1, @%0 ! __raw_write_unlock \n\t" "mov.l %1, @%0 ! arch_write_unlock \n\t"
: :
: "r" (&rw->lock), "r" (RW_LOCK_BIAS) : "r" (&rw->lock), "r" (RW_LOCK_BIAS)
: "t", "memory" : "t", "memory"
); );
} }
static inline int __raw_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
unsigned long tmp, oldval; unsigned long tmp, oldval;
__asm__ __volatile__ ( __asm__ __volatile__ (
"1: \n\t" "1: \n\t"
"movli.l @%2, %0 ! __raw_read_trylock \n\t" "movli.l @%2, %0 ! arch_read_trylock \n\t"
"mov %0, %1 \n\t" "mov %0, %1 \n\t"
"cmp/pl %0 \n\t" "cmp/pl %0 \n\t"
"bf 2f \n\t" "bf 2f \n\t"
@ -193,13 +193,13 @@ static inline int __raw_read_trylock(arch_rwlock_t *rw)
return (oldval > 0); return (oldval > 0);
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
unsigned long tmp, oldval; unsigned long tmp, oldval;
__asm__ __volatile__ ( __asm__ __volatile__ (
"1: \n\t" "1: \n\t"
"movli.l @%2, %0 ! __raw_write_trylock \n\t" "movli.l @%2, %0 ! arch_write_trylock \n\t"
"mov %0, %1 \n\t" "mov %0, %1 \n\t"
"cmp/hs %3, %0 \n\t" "cmp/hs %3, %0 \n\t"
"bf 2f \n\t" "bf 2f \n\t"
@ -216,8 +216,8 @@ static inline int __raw_write_trylock(arch_rwlock_t *rw)
return (oldval > (RW_LOCK_BIAS - 1)); return (oldval > (RW_LOCK_BIAS - 1));
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

32
arch/sparc/include/asm/spinlock_32.h
View file

@ -76,7 +76,7 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
* *
* Unfortunately this scheme limits us to ~16,000,000 cpus. * Unfortunately this scheme limits us to ~16,000,000 cpus.
*/ */
static inline void arch_read_lock(arch_rwlock_t *rw) static inline void __arch_read_lock(arch_rwlock_t *rw)
{ {
register arch_rwlock_t *lp asm("g1"); register arch_rwlock_t *lp asm("g1");
lp = rw; lp = rw;
@ -89,14 +89,14 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
: "g2", "g4", "memory", "cc"); : "g2", "g4", "memory", "cc");
} }
#define __raw_read_lock(lock) \ #define arch_read_lock(lock) \
do { unsigned long flags; \ do { unsigned long flags; \
local_irq_save(flags); \ local_irq_save(flags); \
arch_read_lock(lock); \ __arch_read_lock(lock); \
local_irq_restore(flags); \ local_irq_restore(flags); \
} while(0) } while(0)
static inline void arch_read_unlock(arch_rwlock_t *rw) static inline void __arch_read_unlock(arch_rwlock_t *rw)
{ {
register arch_rwlock_t *lp asm("g1"); register arch_rwlock_t *lp asm("g1");
lp = rw; lp = rw;
@ -109,14 +109,14 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
: "g2", "g4", "memory", "cc"); : "g2", "g4", "memory", "cc");
} }
#define __raw_read_unlock(lock) \ #define arch_read_unlock(lock) \
do { unsigned long flags; \ do { unsigned long flags; \
local_irq_save(flags); \ local_irq_save(flags); \
arch_read_unlock(lock); \ __arch_read_unlock(lock); \
local_irq_restore(flags); \ local_irq_restore(flags); \
} while(0) } while(0)
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
register arch_rwlock_t *lp asm("g1"); register arch_rwlock_t *lp asm("g1");
lp = rw; lp = rw;
@ -130,7 +130,7 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
*(volatile __u32 *)&lp->lock = ~0U; *(volatile __u32 *)&lp->lock = ~0U;
} }
static inline int __raw_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
unsigned int val; unsigned int val;
@ -150,7 +150,7 @@ static inline int __raw_write_trylock(arch_rwlock_t *rw)
return (val == 0); return (val == 0);
} }
static inline int arch_read_trylock(arch_rwlock_t *rw) static inline int __arch_read_trylock(arch_rwlock_t *rw)
{ {
register arch_rwlock_t *lp asm("g1"); register arch_rwlock_t *lp asm("g1");
register int res asm("o0"); register int res asm("o0");
@ -165,27 +165,27 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
return res; return res;
} }
#define __raw_read_trylock(lock) \ #define arch_read_trylock(lock) \
({ unsigned long flags; \ ({ unsigned long flags; \
int res; \ int res; \
local_irq_save(flags); \ local_irq_save(flags); \
res = arch_read_trylock(lock); \ res = __arch_read_trylock(lock); \
local_irq_restore(flags); \ local_irq_restore(flags); \
res; \ res; \
}) })
#define __raw_write_unlock(rw) do { (rw)->lock = 0; } while(0) #define arch_write_unlock(rw) do { (rw)->lock = 0; } while(0)
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define __raw_read_lock_flags(rw, flags) __raw_read_lock(rw) #define arch_read_lock_flags(rw, flags) arch_read_lock(rw)
#define __raw_write_lock_flags(rw, flags) __raw_write_lock(rw) #define arch_write_lock_flags(rw, flags) arch_write_lock(rw)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()
#define arch_write_relax(lock) cpu_relax() #define arch_write_relax(lock) cpu_relax()
#define __raw_read_can_lock(rw) (!((rw)->lock & 0xff)) #define arch_read_can_lock(rw) (!((rw)->lock & 0xff))
#define __raw_write_can_lock(rw) (!(rw)->lock) #define arch_write_can_lock(rw) (!(rw)->lock)
#endif /* !(__ASSEMBLY__) */ #endif /* !(__ASSEMBLY__) */

20
arch/sparc/include/asm/spinlock_64.h
View file

@ -210,17 +210,17 @@ static int inline arch_write_trylock(arch_rwlock_t *lock)
return result; return result;
} }
#define __raw_read_lock(p) arch_read_lock(p) #define arch_read_lock(p) arch_read_lock(p)
#define __raw_read_lock_flags(p, f) arch_read_lock(p) #define arch_read_lock_flags(p, f) arch_read_lock(p)
#define __raw_read_trylock(p) arch_read_trylock(p) #define arch_read_trylock(p) arch_read_trylock(p)
#define __raw_read_unlock(p) arch_read_unlock(p) #define arch_read_unlock(p) arch_read_unlock(p)
#define __raw_write_lock(p) arch_write_lock(p) #define arch_write_lock(p) arch_write_lock(p)
#define __raw_write_lock_flags(p, f) arch_write_lock(p) #define arch_write_lock_flags(p, f) arch_write_lock(p)
#define __raw_write_unlock(p) arch_write_unlock(p) #define arch_write_unlock(p) arch_write_unlock(p)
#define __raw_write_trylock(p) arch_write_trylock(p) #define arch_write_trylock(p) arch_write_trylock(p)
#define __raw_read_can_lock(rw) (!((rw)->lock & 0x80000000UL)) #define arch_read_can_lock(rw) (!((rw)->lock & 0x80000000UL))
#define __raw_write_can_lock(rw) (!(rw)->lock) #define arch_write_can_lock(rw) (!(rw)->lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

20
arch/x86/include/asm/spinlock.h
View file

@ -232,7 +232,7 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
* read_can_lock - would read_trylock() succeed? * read_can_lock - would read_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
static inline int __raw_read_can_lock(arch_rwlock_t *lock) static inline int arch_read_can_lock(arch_rwlock_t *lock)
{ {
return (int)(lock)->lock > 0; return (int)(lock)->lock > 0;
} }
@ -241,12 +241,12 @@ static inline int __raw_read_can_lock(arch_rwlock_t *lock)
* write_can_lock - would write_trylock() succeed? * write_can_lock - would write_trylock() succeed?
* @lock: the rwlock in question. * @lock: the rwlock in question.
*/ */
static inline int __raw_write_can_lock(arch_rwlock_t *lock) static inline int arch_write_can_lock(arch_rwlock_t *lock)
{ {
return (lock)->lock == RW_LOCK_BIAS; return (lock)->lock == RW_LOCK_BIAS;
} }
static inline void __raw_read_lock(arch_rwlock_t *rw) static inline void arch_read_lock(arch_rwlock_t *rw)
{ {
asm volatile(LOCK_PREFIX " subl $1,(%0)\n\t" asm volatile(LOCK_PREFIX " subl $1,(%0)\n\t"
"jns 1f\n" "jns 1f\n"
@ -255,7 +255,7 @@ static inline void __raw_read_lock(arch_rwlock_t *rw)
::LOCK_PTR_REG (rw) : "memory"); ::LOCK_PTR_REG (rw) : "memory");
} }
static inline void __raw_write_lock(arch_rwlock_t *rw) static inline void arch_write_lock(arch_rwlock_t *rw)
{ {
asm volatile(LOCK_PREFIX " subl %1,(%0)\n\t" asm volatile(LOCK_PREFIX " subl %1,(%0)\n\t"
"jz 1f\n" "jz 1f\n"
@ -264,7 +264,7 @@ static inline void __raw_write_lock(arch_rwlock_t *rw)
::LOCK_PTR_REG (rw), "i" (RW_LOCK_BIAS) : "memory"); ::LOCK_PTR_REG (rw), "i" (RW_LOCK_BIAS) : "memory");
} }
static inline int __raw_read_trylock(arch_rwlock_t *lock) static inline int arch_read_trylock(arch_rwlock_t *lock)
{ {
atomic_t *count = (atomic_t *)lock; atomic_t *count = (atomic_t *)lock;
@ -274,7 +274,7 @@ static inline int __raw_read_trylock(arch_rwlock_t *lock)
return 0; return 0;
} }
static inline int __raw_write_trylock(arch_rwlock_t *lock) static inline int arch_write_trylock(arch_rwlock_t *lock)
{ {
atomic_t *count = (atomic_t *)lock; atomic_t *count = (atomic_t *)lock;
@ -284,19 +284,19 @@ static inline int __raw_write_trylock(arch_rwlock_t *lock)
return 0; return 0;
} }
static inline void __raw_read_unlock(arch_rwlock_t *rw) static inline void arch_read_unlock(arch_rwlock_t *rw)
{ {
asm volatile(LOCK_PREFIX "incl %0" :"+m" (rw->lock) : : "memory"); asm volatile(LOCK_PREFIX "incl %0" :"+m" (rw->lock) : : "memory");
} }
static inline void __raw_write_unlock(arch_rwlock_t *rw) static inline void arch_write_unlock(arch_rwlock_t *rw)
{ {
asm volatile(LOCK_PREFIX "addl %1, %0" asm volatile(LOCK_PREFIX "addl %1, %0"
: "+m" (rw->lock) : "i" (RW_LOCK_BIAS) : "memory"); : "+m" (rw->lock) : "i" (RW_LOCK_BIAS) : "memory");
} }
#define __raw_read_lock_flags(lock, flags) __raw_read_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define __raw_write_lock_flags(lock, flags) __raw_write_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax() #define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax()

20
include/linux/rwlock.h
View file

@ -38,20 +38,20 @@ do { \
extern int _raw_write_trylock(rwlock_t *lock); extern int _raw_write_trylock(rwlock_t *lock);
extern void _raw_write_unlock(rwlock_t *lock); extern void _raw_write_unlock(rwlock_t *lock);
#else #else
# define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock) # define _raw_read_lock(rwlock) arch_read_lock(&(rwlock)->raw_lock)
# define _raw_read_lock_flags(lock, flags) \ # define _raw_read_lock_flags(lock, flags) \
__raw_read_lock_flags(&(lock)->raw_lock, *(flags)) arch_read_lock_flags(&(lock)->raw_lock, *(flags))
# define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock) # define _raw_read_trylock(rwlock) arch_read_trylock(&(rwlock)->raw_lock)
# define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock) # define _raw_read_unlock(rwlock) arch_read_unlock(&(rwlock)->raw_lock)
# define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock) # define _raw_write_lock(rwlock) arch_write_lock(&(rwlock)->raw_lock)
# define _raw_write_lock_flags(lock, flags) \ # define _raw_write_lock_flags(lock, flags) \
__raw_write_lock_flags(&(lock)->raw_lock, *(flags)) arch_write_lock_flags(&(lock)->raw_lock, *(flags))
# define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock) # define _raw_write_trylock(rwlock) arch_write_trylock(&(rwlock)->raw_lock)
# define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock) # define _raw_write_unlock(rwlock) arch_write_unlock(&(rwlock)->raw_lock)
#endif #endif
#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock) #define read_can_lock(rwlock) arch_read_can_lock(&(rwlock)->raw_lock)
#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock) #define write_can_lock(rwlock) arch_write_can_lock(&(rwlock)->raw_lock)
/* /*
* Define the various rw_lock methods. Note we define these * Define the various rw_lock methods. Note we define these

16
include/linux/spinlock_up.h
View file

@ -49,12 +49,12 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
/* /*
* Read-write spinlocks. No debug version. * Read-write spinlocks. No debug version.
*/ */
#define __raw_read_lock(lock) do { (void)(lock); } while (0) #define arch_read_lock(lock) do { (void)(lock); } while (0)
#define __raw_write_lock(lock) do { (void)(lock); } while (0) #define arch_write_lock(lock) do { (void)(lock); } while (0)
#define __raw_read_trylock(lock) ({ (void)(lock); 1; }) #define arch_read_trylock(lock) ({ (void)(lock); 1; })
#define __raw_write_trylock(lock) ({ (void)(lock); 1; }) #define arch_write_trylock(lock) ({ (void)(lock); 1; })
#define __raw_read_unlock(lock) do { (void)(lock); } while (0) #define arch_read_unlock(lock) do { (void)(lock); } while (0)
#define __raw_write_unlock(lock) do { (void)(lock); } while (0) #define arch_write_unlock(lock) do { (void)(lock); } while (0)
#else /* DEBUG_SPINLOCK */ #else /* DEBUG_SPINLOCK */
#define arch_spin_is_locked(lock) ((void)(lock), 0) #define arch_spin_is_locked(lock) ((void)(lock), 0)
@ -67,8 +67,8 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
#define arch_spin_is_contended(lock) (((void)(lock), 0)) #define arch_spin_is_contended(lock) (((void)(lock), 0))
#define __raw_read_can_lock(lock) (((void)(lock), 1)) #define arch_read_can_lock(lock) (((void)(lock), 1))
#define __raw_write_can_lock(lock) (((void)(lock), 1)) #define arch_write_can_lock(lock) (((void)(lock), 1))
#define arch_spin_unlock_wait(lock) \ #define arch_spin_unlock_wait(lock) \
do { cpu_relax(); } while (arch_spin_is_locked(lock)) do { cpu_relax(); } while (arch_spin_is_locked(lock))

16
lib/spinlock_debug.c
View file

@ -176,7 +176,7 @@ static void __read_lock_debug(rwlock_t *lock)
for (;;) { for (;;) {
for (i = 0; i < loops; i++) { for (i = 0; i < loops; i++) {
if (__raw_read_trylock(&lock->raw_lock)) if (arch_read_trylock(&lock->raw_lock))
return; return;
__delay(1); __delay(1);
} }
@ -196,12 +196,12 @@ static void __read_lock_debug(rwlock_t *lock)
void _raw_read_lock(rwlock_t *lock) void _raw_read_lock(rwlock_t *lock)
{ {
RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic"); RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");
__raw_read_lock(&lock->raw_lock); arch_read_lock(&lock->raw_lock);
} }
int _raw_read_trylock(rwlock_t *lock) int _raw_read_trylock(rwlock_t *lock)
{ {
int ret = __raw_read_trylock(&lock->raw_lock); int ret = arch_read_trylock(&lock->raw_lock);
#ifndef CONFIG_SMP #ifndef CONFIG_SMP
/* /*
@ -215,7 +215,7 @@ int _raw_read_trylock(rwlock_t *lock)
void _raw_read_unlock(rwlock_t *lock) void _raw_read_unlock(rwlock_t *lock)
{ {
RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic"); RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");
__raw_read_unlock(&lock->raw_lock); arch_read_unlock(&lock->raw_lock);
} }
static inline void debug_write_lock_before(rwlock_t *lock) static inline void debug_write_lock_before(rwlock_t *lock)
@ -251,7 +251,7 @@ static void __write_lock_debug(rwlock_t *lock)
for (;;) { for (;;) {
for (i = 0; i < loops; i++) { for (i = 0; i < loops; i++) {
if (__raw_write_trylock(&lock->raw_lock)) if (arch_write_trylock(&lock->raw_lock))
return; return;
__delay(1); __delay(1);
} }
@ -271,13 +271,13 @@ static void __write_lock_debug(rwlock_t *lock)
void _raw_write_lock(rwlock_t *lock) void _raw_write_lock(rwlock_t *lock)
{ {
debug_write_lock_before(lock); debug_write_lock_before(lock);
__raw_write_lock(&lock->raw_lock); arch_write_lock(&lock->raw_lock);
debug_write_lock_after(lock); debug_write_lock_after(lock);
} }
int _raw_write_trylock(rwlock_t *lock) int _raw_write_trylock(rwlock_t *lock)
{ {
int ret = __raw_write_trylock(&lock->raw_lock); int ret = arch_write_trylock(&lock->raw_lock);
if (ret) if (ret)
debug_write_lock_after(lock); debug_write_lock_after(lock);
@ -293,5 +293,5 @@ int _raw_write_trylock(rwlock_t *lock)
void _raw_write_unlock(rwlock_t *lock) void _raw_write_unlock(rwlock_t *lock)
{ {
debug_write_unlock(lock); debug_write_unlock(lock);
__raw_write_unlock(&lock->raw_lock); arch_write_unlock(&lock->raw_lock);
} }