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@@ -0,0 +1,173 @@
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+/* SPDX-License-Identifier: GPL-2.0 */
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+#ifndef __LINUX_COMPLETION_H
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+#define __LINUX_COMPLETION_H
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+
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+/*
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+ * (C) Copyright 2001 Linus Torvalds
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+ *
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+ * Atomic wait-for-completion handler data structures.
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+ * See kernel/sched/completion.c for details.
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+ */
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+#ifndef __UBOOT__
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+#include <linux/wait.h>
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+#endif /* __UBOOT__ */
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+
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+/*
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+ * struct completion - structure used to maintain state for a "completion"
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+ *
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+ * This is the opaque structure used to maintain the state for a "completion".
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+ * Completions currently use a FIFO to queue threads that have to wait for
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+ * the "completion" event.
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+ *
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+ * See also: complete(), wait_for_completion() (and friends _timeout,
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+ * _interruptible, _interruptible_timeout, and _killable), init_completion(),
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+ * reinit_completion(), and macros DECLARE_COMPLETION(),
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+ * DECLARE_COMPLETION_ONSTACK().
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+ */
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+struct completion {
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+ unsigned int done;
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+#ifndef __UBOOT__
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+ wait_queue_head_t wait;
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+#endif /* __UBOOT__ */
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+};
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+
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+#define init_completion_map(x, m) __init_completion(x)
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+#define init_completion(x) __init_completion(x)
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+static inline void complete_acquire(struct completion *x) {}
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+static inline void complete_release(struct completion *x) {}
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+
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+#define COMPLETION_INITIALIZER(work) \
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+ { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
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+
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+#define COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) \
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+ (*({ init_completion_map(&(work), &(map)); &(work); }))
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+
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+#define COMPLETION_INITIALIZER_ONSTACK(work) \
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+ (*({ init_completion(&work); &work; }))
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+
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+/**
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+ * DECLARE_COMPLETION - declare and initialize a completion structure
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+ * @work: identifier for the completion structure
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+ *
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+ * This macro declares and initializes a completion structure. Generally used
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+ * for static declarations. You should use the _ONSTACK variant for automatic
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+ * variables.
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+ */
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+#define DECLARE_COMPLETION(work) \
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+ struct completion work = COMPLETION_INITIALIZER(work)
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+
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+/*
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+ * Lockdep needs to run a non-constant initializer for on-stack
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+ * completions - so we use the _ONSTACK() variant for those that
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+ * are on the kernel stack:
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+ */
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+/**
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+ * DECLARE_COMPLETION_ONSTACK - declare and initialize a completion structure
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+ * @work: identifier for the completion structure
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+ *
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+ * This macro declares and initializes a completion structure on the kernel
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+ * stack.
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+ */
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+#ifdef CONFIG_LOCKDEP
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+# define DECLARE_COMPLETION_ONSTACK(work) \
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+ struct completion work = COMPLETION_INITIALIZER_ONSTACK(work)
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+# define DECLARE_COMPLETION_ONSTACK_MAP(work, map) \
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+ struct completion work = COMPLETION_INITIALIZER_ONSTACK_MAP(work, map)
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+#else
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+# define DECLARE_COMPLETION_ONSTACK(work) DECLARE_COMPLETION(work)
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+# define DECLARE_COMPLETION_ONSTACK_MAP(work, map) DECLARE_COMPLETION(work)
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+#endif
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+
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+/**
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+ * init_completion - Initialize a dynamically allocated completion
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+ * @x: pointer to completion structure that is to be initialized
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+ *
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+ * This inline function will initialize a dynamically created completion
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+ * structure.
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+ */
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+static inline void __init_completion(struct completion *x)
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+{
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+ x->done = 0;
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+#ifndef __UBOOT__
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+ init_waitqueue_head(&x->wait);
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+#endif /* __UBOOT__ */
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+}
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+
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+/**
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+ * reinit_completion - reinitialize a completion structure
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+ * @x: pointer to completion structure that is to be reinitialized
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+ *
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+ * This inline function should be used to reinitialize a completion structure so it can
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+ * be reused. This is especially important after complete_all() is used.
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+ */
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+static inline void reinit_completion(struct completion *x)
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+{
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+ x->done = 0;
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+}
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+
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+#ifndef __UBOOT__
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+extern void wait_for_completion(struct completion *);
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+extern void wait_for_completion_io(struct completion *);
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+extern int wait_for_completion_interruptible(struct completion *x);
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+extern int wait_for_completion_killable(struct completion *x);
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+extern unsigned long wait_for_completion_timeout(struct completion *x,
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+ unsigned long timeout);
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+extern unsigned long wait_for_completion_io_timeout(struct completion *x,
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+ unsigned long timeout);
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+extern long wait_for_completion_interruptible_timeout(
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+ struct completion *x, unsigned long timeout);
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+extern long wait_for_completion_killable_timeout(
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+ struct completion *x, unsigned long timeout);
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+extern bool try_wait_for_completion(struct completion *x);
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+extern bool completion_done(struct completion *x);
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+
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+extern void complete(struct completion *);
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+extern void complete_all(struct completion *);
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+
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+#else /* __UBOOT __ */
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+
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+#define wait_for_completion(x) do {} while (0)
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+#define wait_for_completion_io(x) do {} while (0)
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+
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+inline int wait_for_completion_interruptible(struct completion *x)
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+{
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+ return 1;
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+}
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+inline int wait_for_completion_killable(struct completion *x)
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+{
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+ return 1;
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+}
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+inline unsigned long wait_for_completion_timeout(struct completion *x,
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+ unsigned long timeout)
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+{
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+ return 1;
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+}
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+inline unsigned long wait_for_completion_io_timeout(struct completion *x,
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+ unsigned long timeout)
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+{
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+ return 1;
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+}
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+inline long wait_for_completion_interruptible_timeout(struct completion *x,
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+ unsigned long timeout)
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+{
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+ return 1;
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+}
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+inline long wait_for_completion_killable_timeout(struct completion *x,
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+ unsigned long timeout)
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+{
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+ return 1;
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+}
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+inline bool try_wait_for_completion(struct completion *x)
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+{
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+ return 1;
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+}
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+inline bool completion_done(struct completion *x)
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+{
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+ return 1;
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+}
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+
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+#define complete(x) do {} while (0)
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+#define complete_all(x) do {} while (0)
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+#endif /* __UBOOT__ */
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+
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+#endif
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