move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / include / linux / percpu-refcount.h

diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h
deleted file mode 100644 (file)
index 0655056..0000000
--- a/include/linux/percpu-refcount.h
+++ /dev/null
@@ -1,180 +0,0 @@
-#ifndef __TOOLS_LINUX_PERCPU_REFCOUNT_H
-#define __TOOLS_LINUX_PERCPU_REFCOUNT_H
-
-#include <linux/atomic.h>
-#include <linux/kernel.h>
-#include <linux/percpu.h>
-
-struct percpu_ref;
-typedef void (percpu_ref_func_t)(struct percpu_ref *);
-
-/* flags set in the lower bits of percpu_ref->percpu_count_ptr */
-enum {
-       __PERCPU_REF_ATOMIC     = 1LU << 0,     /* operating in atomic mode */
-       __PERCPU_REF_DEAD       = 1LU << 1,     /* (being) killed */
-       __PERCPU_REF_ATOMIC_DEAD = __PERCPU_REF_ATOMIC | __PERCPU_REF_DEAD,
-
-       __PERCPU_REF_FLAG_BITS  = 2,
-};
-
-/* @flags for percpu_ref_init() */
-enum {
-       PERCPU_REF_INIT_ATOMIC  = 1 << 0,
-
-       /*
-        * Start dead w/ ref == 0 in atomic mode.  Must be revived with
-        * percpu_ref_reinit() before used.  Implies INIT_ATOMIC.
-        */
-       PERCPU_REF_INIT_DEAD    = 1 << 1,
-};
-
-struct percpu_ref {
-       atomic_long_t           count;
-       percpu_ref_func_t       *release;
-       percpu_ref_func_t       *confirm_switch;
-};
-
-static inline void percpu_ref_exit(struct percpu_ref *ref) {}
-
-static inline int __must_check percpu_ref_init(struct percpu_ref *ref,
-                                percpu_ref_func_t *release, unsigned int flags,
-                                gfp_t gfp)
-{
-       unsigned long start_count = 0;
-
-       if (!(flags & PERCPU_REF_INIT_DEAD))
-               start_count++;
-
-       atomic_long_set(&ref->count, start_count);
-
-       ref->release = release;
-       return 0;
-}
-
-/**
- * percpu_ref_get_many - increment a percpu refcount
- * @ref: percpu_ref to get
- * @nr: number of references to get
- *
- * Analogous to atomic_long_add().
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline void percpu_ref_get_many(struct percpu_ref *ref, unsigned long nr)
-{
-       atomic_long_add(nr, &ref->count);
-}
-
-/**
- * percpu_ref_get - increment a percpu refcount
- * @ref: percpu_ref to get
- *
- * Analagous to atomic_long_inc().
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline void percpu_ref_get(struct percpu_ref *ref)
-{
-       percpu_ref_get_many(ref, 1);
-}
-
-/**
- * percpu_ref_tryget - try to increment a percpu refcount
- * @ref: percpu_ref to try-get
- *
- * Increment a percpu refcount unless its count already reached zero.
- * Returns %true on success; %false on failure.
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline bool percpu_ref_tryget(struct percpu_ref *ref)
-{
-       return atomic_long_inc_not_zero(&ref->count);
-}
-
-/**
- * percpu_ref_tryget_live - try to increment a live percpu refcount
- * @ref: percpu_ref to try-get
- *
- * Increment a percpu refcount unless it has already been killed.  Returns
- * %true on success; %false on failure.
- *
- * Completion of percpu_ref_kill() in itself doesn't guarantee that this
- * function will fail.  For such guarantee, percpu_ref_kill_and_confirm()
- * should be used.  After the confirm_kill callback is invoked, it's
- * guaranteed that no new reference will be given out by
- * percpu_ref_tryget_live().
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline bool percpu_ref_tryget_live(struct percpu_ref *ref)
-{
-       return atomic_long_inc_not_zero(&ref->count);
-}
-
-/**
- * percpu_ref_put_many - decrement a percpu refcount
- * @ref: percpu_ref to put
- * @nr: number of references to put
- *
- * Decrement the refcount, and if 0, call the release function (which was passed
- * to percpu_ref_init())
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline void percpu_ref_put_many(struct percpu_ref *ref, unsigned long nr)
-{
-       if (unlikely(atomic_long_sub_and_test(nr, &ref->count)))
-               ref->release(ref);
-}
-
-/**
- * percpu_ref_put - decrement a percpu refcount
- * @ref: percpu_ref to put
- *
- * Decrement the refcount, and if 0, call the release function (which was passed
- * to percpu_ref_init())
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline void percpu_ref_put(struct percpu_ref *ref)
-{
-       percpu_ref_put_many(ref, 1);
-}
-
-static inline void percpu_ref_reinit(struct percpu_ref *ref)
-{
-       percpu_ref_get(ref);
-}
-
-/**
- * percpu_ref_kill - drop the initial ref
- * @ref: percpu_ref to kill
- *
- * Must be used to drop the initial ref on a percpu refcount; must be called
- * precisely once before shutdown.
- */
-static inline void percpu_ref_kill(struct percpu_ref *ref)
-{
-       percpu_ref_put(ref);
-}
-
-/**
- * percpu_ref_is_zero - test whether a percpu refcount reached zero
- * @ref: percpu_ref to test
- *
- * Returns %true if @ref reached zero.
- *
- * This function is safe to call as long as @ref is between init and exit.
- */
-static inline bool percpu_ref_is_zero(struct percpu_ref *ref)
-{
-       return !atomic_long_read(&ref->count);
-}
-
-static inline bool percpu_ref_is_dying(struct percpu_ref *ref)
-{
-       return percpu_ref_is_zero(ref);
-}
-
-#endif /* __TOOLS_LINUX_PERCPU_REFCOUNT_H */