[PATCH v2 01a/17] powerpc/qspinlock: prepare powerpc qspinlock implementation

@@ -4,7 +4,6 @@ generated-y += syscall_table_64.h
 generated-y += syscall_table_spu.h
 generic-y += export.h
 generic-y += kvm_types.h
-generic-y += mcs_spinlock.h
 generic-y += qrwlock.h
 generic-y += vtime.h
 generic-y += early_ioremap.h

@@ -7,42 +7,32 @@
 
 #define _Q_PENDING_LOOPS	(1 << 9) /* not tuned */
 
-#ifdef CONFIG_PARAVIRT_SPINLOCKS
-extern void native_queued_spin_lock_slowpath(struct qspinlock *lock, u32 val);
-extern void __pv_queued_spin_lock_slowpath(struct qspinlock *lock, u32 val);
-extern void __pv_queued_spin_unlock(struct qspinlock *lock);
+void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val);
+void __pv_queued_spin_lock_slowpath(struct qspinlock *lock, u32 val);
+void __pv_queued_spin_unlock(struct qspinlock *lock);
 
-static __always_inline void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val)
+static __always_inline void queued_spin_lock(struct qspinlock *lock)
 {
-	if (!is_shared_processor())
-		native_queued_spin_lock_slowpath(lock, val);
+	u32 val = 0;
+
+	if (likely(arch_atomic_try_cmpxchg_lock(&lock->val, &val, _Q_LOCKED_VAL)))
+		return;
+
+	if (!IS_ENABLED(CONFIG_PARAVIRT_SPINLOCKS) || !is_shared_processor())
+		queued_spin_lock_slowpath(lock, val);
 	else
 		__pv_queued_spin_lock_slowpath(lock, val);
 }
+#define queued_spin_lock queued_spin_lock
 
-#define queued_spin_unlock queued_spin_unlock
 static inline void queued_spin_unlock(struct qspinlock *lock)
 {
-	if (!is_shared_processor())
+	if (!IS_ENABLED(CONFIG_PARAVIRT_SPINLOCKS) || !is_shared_processor())
 		smp_store_release(&lock->locked, 0);
 	else
 		__pv_queued_spin_unlock(lock);
 }
-
-#else
-extern void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val);
-#endif
-
-static __always_inline void queued_spin_lock(struct qspinlock *lock)
-{
-	u32 val = 0;
-
-	if (likely(arch_atomic_try_cmpxchg_lock(&lock->val, &val, _Q_LOCKED_VAL)))
-		return;
-
-	queued_spin_lock_slowpath(lock, val);
-}
-#define queued_spin_lock queued_spin_lock
+#define queued_spin_unlock queued_spin_unlock
 
 #ifdef CONFIG_PARAVIRT_SPINLOCKS
 #define SPIN_THRESHOLD (1<<15) /* not tuned */

@@ -63,13 +53,6 @@ static __always_inline void pv_kick(int cpu)
 	prod_cpu(cpu);
 }
 
-extern void __pv_init_lock_hash(void);
-
-static inline void pv_spinlocks_init(void)
-{
-	__pv_init_lock_hash();
-}
-
 #endif
 
 /*

@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-#ifndef _ASM_POWERPC_QSPINLOCK_PARAVIRT_H
-#define _ASM_POWERPC_QSPINLOCK_PARAVIRT_H
-
-EXPORT_SYMBOL(__pv_queued_spin_unlock);
-
-#endif /* _ASM_POWERPC_QSPINLOCK_PARAVIRT_H */

@@ -13,7 +13,7 @@
 /* See include/linux/spinlock.h */
 #define smp_mb__after_spinlock()	smp_mb()
 
-#ifndef CONFIG_PARAVIRT_SPINLOCKS
+#ifndef CONFIG_PPC_QUEUED_SPINLOCKS
 static inline void pv_spinlocks_init(void) { }
 #endif