move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / include / linux / osq_lock.h

diff --git a/include/linux/osq_lock.h b/include/linux/osq_lock.h
deleted file mode 100644 (file)
index bde9f0d..0000000
--- a/include/linux/osq_lock.h
+++ /dev/null
@@ -1,44 +0,0 @@
-#ifndef __LINUX_OSQ_LOCK_H
-#define __LINUX_OSQ_LOCK_H
-
-/*
- * An MCS like lock especially tailored for optimistic spinning for sleeping
- * lock implementations (mutex, rwsem, etc).
- */
-struct optimistic_spin_node {
-       struct optimistic_spin_node *next, *prev;
-       int locked; /* 1 if lock acquired */
-       int cpu; /* encoded CPU # + 1 value */
-};
-
-struct optimistic_spin_queue {
-       /*
-        * Stores an encoded value of the CPU # of the tail node in the queue.
-        * If the queue is empty, then it's set to OSQ_UNLOCKED_VAL.
-        */
-       atomic_t tail;
-};
-
-#define OSQ_UNLOCKED_VAL (0)
-
-/* Init macro and function. */
-#define OSQ_LOCK_UNLOCKED { ATOMIC_INIT(OSQ_UNLOCKED_VAL) }
-
-static inline void osq_lock_init(struct optimistic_spin_queue *lock)
-{
-       atomic_set(&lock->tail, OSQ_UNLOCKED_VAL);
-}
-
-static inline bool osq_lock(struct optimistic_spin_queue *lock)
-{
-       return false;
-}
-
-static inline void osq_unlock(struct optimistic_spin_queue *lock) {}
-
-static inline bool osq_is_locked(struct optimistic_spin_queue *lock)
-{
-       return atomic_read(&lock->tail) != OSQ_UNLOCKED_VAL;
-}
-
-#endif