Revert "Add spinlocks"

[fio.git] / arch / arch-s390.h

diff --git a/arch/arch-s390.h b/arch/arch-s390.h
index 8c6fa5ef2e5a92b0cbf391a8ca9a17efa663148a..06477503be02859a41bd3186d1c2666ed7abc64f 100644 (file)
--- a/arch/arch-s390.h
+++ b/arch/arch-s390.h
@@ -22,39 +22,4 @@
 #define read_barrier() asm volatile("bcr 15,0" : : : "memory")
 #define write_barrier()        asm volatile("bcr 15,0" : : : "memory")
 
-typedef struct {
-       volatile unsigned int lock;
-} spinlock_t;
-
-static inline int
-_raw_compare_and_swap(volatile unsigned int *lock,
-                     unsigned int old, unsigned int new)
-{
-       __asm__ __volatile__(
-               "       cs      %0,%3,0(%4)"
-               : "=d" (old), "=m" (*lock)
-               : "0" (old), "d" (new), "a" (lock), "m" (*lock)
-               : "cc", "memory" );
-
-       return old;
-}
-
-static inline void spin_lock(spinlock_t *lock)
-{
-       if (!_raw_compare_and_swap(&lock->lock, 0, 0x80000000))
-               return;
-
-       while (1) {
-               if (lock->lock)
-                       continue;
-               if (!_raw_compare_and_swap(&lock->lock, 0, 0x80000000))
-                       break;
-       }
-}
-
-static inline void spin_unlock(spinlock_t *lock)
-{
-        _raw_compare_and_swap(&lock->lock, 0x80000000, 0);
-}
-
 #endif