s390/rwlock: remove interrupt-enabling rwlock variant.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h
index e98654163e5c14354d890cbaf8eca6432ff7b010..f9537b91ff215dbb94396527ca8f7af2bbd4665c 100644 (file)
--- a/arch/s390/include/asm/spinlock.h
+++ b/arch/s390/include/asm/spinlock.h
@@ -131,12 +131,13 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
 #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_flags(arch_rwlock_t *lp, unsigned long flags);
-extern int _raw_read_trylock_retry(arch_rwlock_t *lp);
 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 int _raw_read_trylock_retry(arch_rwlock_t *lp);
 extern int _raw_write_trylock_retry(arch_rwlock_t *lp);
 
+#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
+#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
+
 static inline int arch_read_trylock_once(arch_rwlock_t *rw)
 {
        unsigned int old = ACCESS_ONCE(rw->lock);
@@ -157,12 +158,6 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
                _raw_read_lock_wait(rw);
 }
 
-static inline void arch_read_lock_flags(arch_rwlock_t *rw, unsigned long flags)
-{
-       if (!arch_read_trylock_once(rw))
-               _raw_read_lock_wait_flags(rw, flags);
-}
-
 static inline void arch_read_unlock(arch_rwlock_t *rw)
 {
        unsigned int old;
@@ -179,13 +174,6 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
        rw->owner = SPINLOCK_LOCKVAL;
 }
 
-static inline void arch_write_lock_flags(arch_rwlock_t *rw, unsigned long flags)
-{
-       if (!arch_write_trylock_once(rw))
-               _raw_write_lock_wait_flags(rw, flags);
-       rw->owner = SPINLOCK_LOCKVAL;
-}
-
 static inline void arch_write_unlock(arch_rwlock_t *rw)
 {
        typecheck(unsigned int, rw->lock);

diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index 5f63ac5783cbf771d41b1d47cb7c1514e044355e..c717f4a4c63e696a46e109fc2fb2cd3112d46d63 100644 (file)
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -131,31 +131,6 @@ void _raw_read_lock_wait(arch_rwlock_t *rw)
 }
 EXPORT_SYMBOL(_raw_read_lock_wait);
 
-void _raw_read_lock_wait_flags(arch_rwlock_t *rw, unsigned long flags)
-{
-       unsigned int owner, old;
-       int count = spin_retry;
-
-       local_irq_restore(flags);
-       owner = 0;
-       while (1) {
-               if (count-- <= 0) {
-                       if (owner && !smp_vcpu_scheduled(~owner))
-                               smp_yield_cpu(~owner);
-                       count = spin_retry;
-               }
-               old = ACCESS_ONCE(rw->lock);
-               owner = ACCESS_ONCE(rw->owner);
-               if ((int) old < 0)
-                       continue;
-               local_irq_disable();
-               if (_raw_compare_and_swap(&rw->lock, old, old + 1))
-                       return;
-               local_irq_restore(flags);
-       }
-}
-EXPORT_SYMBOL(_raw_read_lock_wait_flags);
-
 int _raw_read_trylock_retry(arch_rwlock_t *rw)
 {
        unsigned int old;
@@ -194,31 +169,6 @@ void _raw_write_lock_wait(arch_rwlock_t *rw)
 }
 EXPORT_SYMBOL(_raw_write_lock_wait);
 
-void _raw_write_lock_wait_flags(arch_rwlock_t *rw, unsigned long flags)
-{
-       unsigned int owner, old;
-       int count = spin_retry;
-
-       local_irq_restore(flags);
-       owner = 0;
-       while (1) {
-               if (count-- <= 0) {
-                       if (owner && !smp_vcpu_scheduled(~owner))
-                               smp_yield_cpu(~owner);
-                       count = spin_retry;
-               }
-               old = ACCESS_ONCE(rw->lock);
-               owner = ACCESS_ONCE(rw->owner);
-               if (old)
-                       continue;
-               local_irq_disable();
-               if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000))
-                       return;
-               local_irq_restore(flags);
-       }
-}
-EXPORT_SYMBOL(_raw_write_lock_wait_flags);
-
 int _raw_write_trylock_retry(arch_rwlock_t *rw)
 {
        unsigned int old;