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Diffstat (limited to 'arch/powerpc/include/asm/spinlock.h')
-rw-r--r--arch/powerpc/include/asm/spinlock.h33
1 files changed, 0 insertions, 33 deletions
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index 8c1b913de6d7..d256e448ea49 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -170,39 +170,6 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
lock->slock = 0;
}
-static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
-{
- arch_spinlock_t lock_val;
-
- smp_mb();
-
- /*
- * Atomically load and store back the lock value (unchanged). This
- * ensures that our observation of the lock value is ordered with
- * respect to other lock operations.
- */
- __asm__ __volatile__(
-"1: " PPC_LWARX(%0, 0, %2, 0) "\n"
-" stwcx. %0, 0, %2\n"
-" bne- 1b\n"
- : "=&r" (lock_val), "+m" (*lock)
- : "r" (lock)
- : "cr0", "xer");
-
- if (arch_spin_value_unlocked(lock_val))
- goto out;
-
- while (lock->slock) {
- HMT_low();
- if (SHARED_PROCESSOR)
- __spin_yield(lock);
- }
- HMT_medium();
-
-out:
- smp_mb();
-}
-
/*
* Read-write spinlocks, allowing multiple readers
* but only one writer.