1 files changed, 80 insertions, 0 deletions

diff --git a/include/linux/spinlock_api_up.h b/include/linux/spinlock_api_up.h
new file mode 100644
index 000000000000..cd81cee566f4
--- /dev/null
+++ b/include/linux/spinlock_api_up.h
@@ -0,0 +1,80 @@
+#ifndef __LINUX_SPINLOCK_API_UP_H
+#define __LINUX_SPINLOCK_API_UP_H
+
+#ifndef __LINUX_SPINLOCK_H
+# error "please don't include this file directly"
+#endif
+
+/*
+ * include/linux/spinlock_api_up.h
+ *
+ * spinlock API implementation on UP-nondebug (inlined implementation)
+ *
+ * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
+ * Released under the General Public License (GPL).
+ */
+
+#define in_lock_functions(ADDR)         0
+
+#define assert_spin_locked(lock)        do { (void)(lock); } while (0)
+
+/*
+ * In the UP-nondebug case there's no real locking going on, so the
+ * only thing we have to do is to keep the preempt counts and irq
+ * flags straight, to supress compiler warnings of unused lock
+ * variables, and to add the proper checker annotations:
+ */
+#define __LOCK(lock) \
+  do { preempt_disable(); __acquire(lock); (void)(lock); } while (0)
+
+#define __LOCK_BH(lock) \
+  do { local_bh_disable(); __LOCK(lock); } while (0)
+
+#define __LOCK_IRQ(lock) \
+  do { local_irq_disable(); __LOCK(lock); } while (0)
+
+#define __LOCK_IRQSAVE(lock, flags) \
+  do { local_irq_save(flags); __LOCK(lock); } while (0)
+
+#define __UNLOCK(lock) \
+  do { preempt_enable(); __release(lock); (void)(lock); } while (0)
+
+#define __UNLOCK_BH(lock) \
+  do { preempt_enable_no_resched(); local_bh_enable(); __release(lock); (void)(lock); } while (0)
+
+#define __UNLOCK_IRQ(lock) \
+  do { local_irq_enable(); __UNLOCK(lock); } while (0)
+
+#define __UNLOCK_IRQRESTORE(lock, flags) \
+  do { local_irq_restore(flags); __UNLOCK(lock); } while (0)
+
+#define _spin_lock(lock)                        __LOCK(lock)
+#define _read_lock(lock)                        __LOCK(lock)
+#define _write_lock(lock)                       __LOCK(lock)
+#define _spin_lock_bh(lock)                     __LOCK_BH(lock)
+#define _read_lock_bh(lock)                     __LOCK_BH(lock)
+#define _write_lock_bh(lock)                    __LOCK_BH(lock)
+#define _spin_lock_irq(lock)                    __LOCK_IRQ(lock)
+#define _read_lock_irq(lock)                    __LOCK_IRQ(lock)
+#define _write_lock_irq(lock)                   __LOCK_IRQ(lock)
+#define _spin_lock_irqsave(lock, flags)         __LOCK_IRQSAVE(lock, flags)
+#define _read_lock_irqsave(lock, flags)         __LOCK_IRQSAVE(lock, flags)
+#define _write_lock_irqsave(lock, flags)        __LOCK_IRQSAVE(lock, flags)
+#define _spin_trylock(lock)                     ({ __LOCK(lock); 1; })
+#define _read_trylock(lock)                     ({ __LOCK(lock); 1; })
+#define _write_trylock(lock)                    ({ __LOCK(lock); 1; })
+#define _spin_trylock_bh(lock)                  ({ __LOCK_BH(lock); 1; })
+#define _spin_unlock(lock)                      __UNLOCK(lock)
+#define _read_unlock(lock)                      __UNLOCK(lock)
+#define _write_unlock(lock)                     __UNLOCK(lock)
+#define _spin_unlock_bh(lock)                   __UNLOCK_BH(lock)
+#define _write_unlock_bh(lock)                  __UNLOCK_BH(lock)
+#define _read_unlock_bh(lock)                   __UNLOCK_BH(lock)
+#define _spin_unlock_irq(lock)                  __UNLOCK_IRQ(lock)
+#define _read_unlock_irq(lock)                  __UNLOCK_IRQ(lock)
+#define _write_unlock_irq(lock)                 __UNLOCK_IRQ(lock)
+#define _spin_unlock_irqrestore(lock, flags)    __UNLOCK_IRQRESTORE(lock, flags)
+#define _read_unlock_irqrestore(lock, flags)    __UNLOCK_IRQRESTORE(lock, flags)
+#define _write_unlock_irqrestore(lock, flags)   __UNLOCK_IRQRESTORE(lock, flags)
+
+#endif /* __LINUX_SPINLOCK_API_UP_H */