aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/include/asm/spinlock.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/include/asm/spinlock.h')
-rw-r--r--arch/powerpc/include/asm/spinlock.h32
1 files changed, 17 insertions, 15 deletions
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index 764094cff68..f9611bd69ed 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -27,6 +27,7 @@
#endif
#include <asm/asm-compat.h>
#include <asm/synch.h>
+#include <asm/ppc-opcode.h>
#define arch_spin_is_locked(x) ((x)->slock != 0)
@@ -60,13 +61,14 @@ static inline unsigned long __arch_spin_trylock(arch_spinlock_t *lock)
token = LOCK_TOKEN;
__asm__ __volatile__(
-"1: lwarx %0,0,%2\n\
+"1: " PPC_LWARX(%0,0,%2,1) "\n\
cmpwi 0,%0,0\n\
bne- 2f\n\
stwcx. %1,0,%2\n\
- bne- 1b\n\
- isync\n\
-2:" : "=&r" (tmp)
+ bne- 1b\n"
+ PPC_ACQUIRE_BARRIER
+"2:"
+ : "=&r" (tmp)
: "r" (token), "r" (&lock->slock)
: "cr0", "memory");
@@ -144,7 +146,7 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
SYNC_IO;
__asm__ __volatile__("# arch_spin_unlock\n\t"
- LWSYNC_ON_SMP: : :"memory");
+ PPC_RELEASE_BARRIER: : :"memory");
lock->slock = 0;
}
@@ -186,15 +188,15 @@ static inline long __arch_read_trylock(arch_rwlock_t *rw)
long tmp;
__asm__ __volatile__(
-"1: lwarx %0,0,%1\n"
+"1: " PPC_LWARX(%0,0,%1,1) "\n"
__DO_SIGN_EXTEND
" addic. %0,%0,1\n\
ble- 2f\n"
PPC405_ERR77(0,%1)
" stwcx. %0,0,%1\n\
- bne- 1b\n\
- isync\n\
-2:" : "=&r" (tmp)
+ bne- 1b\n"
+ PPC_ACQUIRE_BARRIER
+"2:" : "=&r" (tmp)
: "r" (&rw->lock)
: "cr0", "xer", "memory");
@@ -211,14 +213,14 @@ static inline long __arch_write_trylock(arch_rwlock_t *rw)
token = WRLOCK_TOKEN;
__asm__ __volatile__(
-"1: lwarx %0,0,%2\n\
+"1: " PPC_LWARX(%0,0,%2,1) "\n\
cmpwi 0,%0,0\n\
bne- 2f\n"
PPC405_ERR77(0,%1)
" stwcx. %1,0,%2\n\
- bne- 1b\n\
- isync\n\
-2:" : "=&r" (tmp)
+ bne- 1b\n"
+ PPC_ACQUIRE_BARRIER
+"2:" : "=&r" (tmp)
: "r" (token), "r" (&rw->lock)
: "cr0", "memory");
@@ -269,7 +271,7 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
__asm__ __volatile__(
"# read_unlock\n\t"
- LWSYNC_ON_SMP
+ PPC_RELEASE_BARRIER
"1: lwarx %0,0,%1\n\
addic %0,%0,-1\n"
PPC405_ERR77(0,%1)
@@ -283,7 +285,7 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
static inline void arch_write_unlock(arch_rwlock_t *rw)
{
__asm__ __volatile__("# write_unlock\n\t"
- LWSYNC_ON_SMP: : :"memory");
+ PPC_RELEASE_BARRIER: : :"memory");
rw->lock = 0;
}