cregit-Linux how code gets into the kernel

Release 4.12 include/linux/atomic.h

Directory: include/linux
/* Atomic operations usable in machine independent code */
#ifndef _LINUX_ATOMIC_H

#define _LINUX_ATOMIC_H
#include <asm/atomic.h>
#include <asm/barrier.h>

/*
 * Relaxed variants of xchg, cmpxchg and some atomic operations.
 *
 * We support four variants:
 *
 * - Fully ordered: The default implementation, no suffix required.
 * - Acquire: Provides ACQUIRE semantics, _acquire suffix.
 * - Release: Provides RELEASE semantics, _release suffix.
 * - Relaxed: No ordering guarantees, _relaxed suffix.
 *
 * For compound atomics performing both a load and a store, ACQUIRE
 * semantics apply only to the load and RELEASE semantics only to the
 * store portion of the operation. Note that a failed cmpxchg_acquire
 * does -not- imply any memory ordering constraints.
 *
 * See Documentation/memory-barriers.txt for ACQUIRE/RELEASE definitions.
 */

#ifndef atomic_read_acquire

#define  atomic_read_acquire(v)		smp_load_acquire(&(v)->counter)
#endif

#ifndef atomic_set_release

#define  atomic_set_release(v, i)	smp_store_release(&(v)->counter, (i))
#endif

/*
 * The idea here is to build acquire/release variants by adding explicit
 * barriers on top of the relaxed variant. In the case where the relaxed
 * variant is already fully ordered, no additional barriers are needed.
 *
 * Besides, if an arch has a special barrier for acquire/release, it could
 * implement its own __atomic_op_* and use the same framework for building
 * variants
 */
#ifndef __atomic_op_acquire

#define __atomic_op_acquire(op, args...)				\
({                                                                      \
        typeof(op##_relaxed(args)) __ret  = op##_relaxed(args);         \
        smp_mb__after_atomic();                                         \
        __ret;                                                          \
})
#endif

#ifndef __atomic_op_release

#define __atomic_op_release(op, args...)				\
({                                                                      \
        smp_mb__before_atomic();                                        \
        op##_relaxed(args);                                             \
})
#endif

#ifndef __atomic_op_fence

#define __atomic_op_fence(op, args...)					\
({                                                                      \
        typeof(op##_relaxed(args)) __ret;                               \
        smp_mb__before_atomic();                                        \
        __ret = op##_relaxed(args);                                     \
        smp_mb__after_atomic();                                         \
        __ret;                                                          \
})
#endif

/* atomic_add_return_relaxed */
#ifndef atomic_add_return_relaxed

#define  atomic_add_return_relaxed	atomic_add_return

#define  atomic_add_return_acquire	atomic_add_return

#define  atomic_add_return_release	atomic_add_return

#else /* atomic_add_return_relaxed */

#ifndef atomic_add_return_acquire

#define  atomic_add_return_acquire(...)					\
	__atomic_op_acquire(atomic_add_return, __VA_ARGS__)
#endif

#ifndef atomic_add_return_release

#define  atomic_add_return_release(...)					\
	__atomic_op_release(atomic_add_return, __VA_ARGS__)
#endif

#ifndef atomic_add_return

#define  atomic_add_return(...)						\
	__atomic_op_fence(atomic_add_return, __VA_ARGS__)
#endif
#endif /* atomic_add_return_relaxed */

/* atomic_inc_return_relaxed */
#ifndef atomic_inc_return_relaxed

#define  atomic_inc_return_relaxed	atomic_inc_return

#define  atomic_inc_return_acquire	atomic_inc_return

#define  atomic_inc_return_release	atomic_inc_return

#else /* atomic_inc_return_relaxed */

#ifndef atomic_inc_return_acquire

#define  atomic_inc_return_acquire(...)					\
	__atomic_op_acquire(atomic_inc_return, __VA_ARGS__)
#endif

#ifndef atomic_inc_return_release

#define  atomic_inc_return_release(...)					\
	__atomic_op_release(atomic_inc_return, __VA_ARGS__)
#endif

#ifndef atomic_inc_return

#define  atomic_inc_return(...)						\
	__atomic_op_fence(atomic_inc_return, __VA_ARGS__)
#endif
#endif /* atomic_inc_return_relaxed */

/* atomic_sub_return_relaxed */
#ifndef atomic_sub_return_relaxed

#define  atomic_sub_return_relaxed	atomic_sub_return

#define  atomic_sub_return_acquire	atomic_sub_return

#define  atomic_sub_return_release	atomic_sub_return

#else /* atomic_sub_return_relaxed */

#ifndef atomic_sub_return_acquire

#define  atomic_sub_return_acquire(...)					\
	__atomic_op_acquire(atomic_sub_return, __VA_ARGS__)
#endif

#ifndef atomic_sub_return_release

#define  atomic_sub_return_release(...)					\
	__atomic_op_release(atomic_sub_return, __VA_ARGS__)
#endif

#ifndef atomic_sub_return

#define  atomic_sub_return(...)						\
	__atomic_op_fence(atomic_sub_return, __VA_ARGS__)
#endif
#endif /* atomic_sub_return_relaxed */

/* atomic_dec_return_relaxed */
#ifndef atomic_dec_return_relaxed

#define  atomic_dec_return_relaxed	atomic_dec_return

#define  atomic_dec_return_acquire	atomic_dec_return

#define  atomic_dec_return_release	atomic_dec_return

#else /* atomic_dec_return_relaxed */

#ifndef atomic_dec_return_acquire

#define  atomic_dec_return_acquire(...)					\
	__atomic_op_acquire(atomic_dec_return, __VA_ARGS__)
#endif

#ifndef atomic_dec_return_release

#define  atomic_dec_return_release(...)					\
	__atomic_op_release(atomic_dec_return, __VA_ARGS__)
#endif

#ifndef atomic_dec_return

#define  atomic_dec_return(...)						\
	__atomic_op_fence(atomic_dec_return, __VA_ARGS__)
#endif
#endif /* atomic_dec_return_relaxed */


/* atomic_fetch_add_relaxed */
#ifndef atomic_fetch_add_relaxed

#define atomic_fetch_add_relaxed	atomic_fetch_add

#define atomic_fetch_add_acquire	atomic_fetch_add

#define atomic_fetch_add_release	atomic_fetch_add

#else /* atomic_fetch_add_relaxed */

#ifndef atomic_fetch_add_acquire

#define atomic_fetch_add_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_add, __VA_ARGS__)
#endif

#ifndef atomic_fetch_add_release

#define atomic_fetch_add_release(...)					\
	__atomic_op_release(atomic_fetch_add, __VA_ARGS__)
#endif

#ifndef atomic_fetch_add

#define atomic_fetch_add(...)						\
	__atomic_op_fence(atomic_fetch_add, __VA_ARGS__)
#endif
#endif /* atomic_fetch_add_relaxed */

/* atomic_fetch_inc_relaxed */
#ifndef atomic_fetch_inc_relaxed

#ifndef atomic_fetch_inc

#define atomic_fetch_inc(v)	        atomic_fetch_add(1, (v))

#define atomic_fetch_inc_relaxed(v)	atomic_fetch_add_relaxed(1, (v))

#define atomic_fetch_inc_acquire(v)	atomic_fetch_add_acquire(1, (v))

#define atomic_fetch_inc_release(v)	atomic_fetch_add_release(1, (v))
#else /* atomic_fetch_inc */

#define atomic_fetch_inc_relaxed	atomic_fetch_inc

#define atomic_fetch_inc_acquire	atomic_fetch_inc

#define atomic_fetch_inc_release	atomic_fetch_inc
#endif /* atomic_fetch_inc */

#else /* atomic_fetch_inc_relaxed */

#ifndef atomic_fetch_inc_acquire

#define atomic_fetch_inc_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_inc, __VA_ARGS__)
#endif

#ifndef atomic_fetch_inc_release

#define atomic_fetch_inc_release(...)					\
	__atomic_op_release(atomic_fetch_inc, __VA_ARGS__)
#endif

#ifndef atomic_fetch_inc

#define atomic_fetch_inc(...)						\
	__atomic_op_fence(atomic_fetch_inc, __VA_ARGS__)
#endif
#endif /* atomic_fetch_inc_relaxed */

/* atomic_fetch_sub_relaxed */
#ifndef atomic_fetch_sub_relaxed

#define atomic_fetch_sub_relaxed	atomic_fetch_sub

#define atomic_fetch_sub_acquire	atomic_fetch_sub

#define atomic_fetch_sub_release	atomic_fetch_sub

#else /* atomic_fetch_sub_relaxed */

#ifndef atomic_fetch_sub_acquire

#define atomic_fetch_sub_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_sub, __VA_ARGS__)
#endif

#ifndef atomic_fetch_sub_release

#define atomic_fetch_sub_release(...)					\
	__atomic_op_release(atomic_fetch_sub, __VA_ARGS__)
#endif

#ifndef atomic_fetch_sub

#define atomic_fetch_sub(...)						\
	__atomic_op_fence(atomic_fetch_sub, __VA_ARGS__)
#endif
#endif /* atomic_fetch_sub_relaxed */

/* atomic_fetch_dec_relaxed */
#ifndef atomic_fetch_dec_relaxed

#ifndef atomic_fetch_dec

#define atomic_fetch_dec(v)	        atomic_fetch_sub(1, (v))

#define atomic_fetch_dec_relaxed(v)	atomic_fetch_sub_relaxed(1, (v))

#define atomic_fetch_dec_acquire(v)	atomic_fetch_sub_acquire(1, (v))

#define atomic_fetch_dec_release(v)	atomic_fetch_sub_release(1, (v))
#else /* atomic_fetch_dec */

#define atomic_fetch_dec_relaxed	atomic_fetch_dec

#define atomic_fetch_dec_acquire	atomic_fetch_dec

#define atomic_fetch_dec_release	atomic_fetch_dec
#endif /* atomic_fetch_dec */

#else /* atomic_fetch_dec_relaxed */

#ifndef atomic_fetch_dec_acquire

#define atomic_fetch_dec_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_dec, __VA_ARGS__)
#endif

#ifndef atomic_fetch_dec_release

#define atomic_fetch_dec_release(...)					\
	__atomic_op_release(atomic_fetch_dec, __VA_ARGS__)
#endif

#ifndef atomic_fetch_dec

#define atomic_fetch_dec(...)						\
	__atomic_op_fence(atomic_fetch_dec, __VA_ARGS__)
#endif
#endif /* atomic_fetch_dec_relaxed */

/* atomic_fetch_or_relaxed */
#ifndef atomic_fetch_or_relaxed

#define atomic_fetch_or_relaxed	atomic_fetch_or

#define atomic_fetch_or_acquire	atomic_fetch_or

#define atomic_fetch_or_release	atomic_fetch_or

#else /* atomic_fetch_or_relaxed */

#ifndef atomic_fetch_or_acquire

#define atomic_fetch_or_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_or, __VA_ARGS__)
#endif

#ifndef atomic_fetch_or_release

#define atomic_fetch_or_release(...)					\
	__atomic_op_release(atomic_fetch_or, __VA_ARGS__)
#endif

#ifndef atomic_fetch_or

#define atomic_fetch_or(...)						\
	__atomic_op_fence(atomic_fetch_or, __VA_ARGS__)
#endif
#endif /* atomic_fetch_or_relaxed */

/* atomic_fetch_and_relaxed */
#ifndef atomic_fetch_and_relaxed

#define atomic_fetch_and_relaxed	atomic_fetch_and

#define atomic_fetch_and_acquire	atomic_fetch_and

#define atomic_fetch_and_release	atomic_fetch_and

#else /* atomic_fetch_and_relaxed */

#ifndef atomic_fetch_and_acquire

#define atomic_fetch_and_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_and, __VA_ARGS__)
#endif

#ifndef atomic_fetch_and_release

#define atomic_fetch_and_release(...)					\
	__atomic_op_release(atomic_fetch_and, __VA_ARGS__)
#endif

#ifndef atomic_fetch_and

#define atomic_fetch_and(...)						\
	__atomic_op_fence(atomic_fetch_and, __VA_ARGS__)
#endif
#endif /* atomic_fetch_and_relaxed */

#ifdef atomic_andnot
/* atomic_fetch_andnot_relaxed */
#ifndef atomic_fetch_andnot_relaxed

#define atomic_fetch_andnot_relaxed	atomic_fetch_andnot

#define atomic_fetch_andnot_acquire	atomic_fetch_andnot

#define atomic_fetch_andnot_release	atomic_fetch_andnot

#else /* atomic_fetch_andnot_relaxed */

#ifndef atomic_fetch_andnot_acquire

#define atomic_fetch_andnot_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_andnot, __VA_ARGS__)
#endif

#ifndef atomic_fetch_andnot_release

#define atomic_fetch_andnot_release(...)					\
	__atomic_op_release(atomic_fetch_andnot, __VA_ARGS__)
#endif

#ifndef atomic_fetch_andnot

#define atomic_fetch_andnot(...)						\
	__atomic_op_fence(atomic_fetch_andnot, __VA_ARGS__)
#endif
#endif /* atomic_fetch_andnot_relaxed */
#endif /* atomic_andnot */

/* atomic_fetch_xor_relaxed */
#ifndef atomic_fetch_xor_relaxed

#define atomic_fetch_xor_relaxed	atomic_fetch_xor

#define atomic_fetch_xor_acquire	atomic_fetch_xor

#define atomic_fetch_xor_release	atomic_fetch_xor

#else /* atomic_fetch_xor_relaxed */

#ifndef atomic_fetch_xor_acquire

#define atomic_fetch_xor_acquire(...)					\
	__atomic_op_acquire(atomic_fetch_xor, __VA_ARGS__)
#endif

#ifndef atomic_fetch_xor_release

#define atomic_fetch_xor_release(...)					\
	__atomic_op_release(atomic_fetch_xor, __VA_ARGS__)
#endif

#ifndef atomic_fetch_xor

#define atomic_fetch_xor(...)						\
	__atomic_op_fence(atomic_fetch_xor, __VA_ARGS__)
#endif
#endif /* atomic_fetch_xor_relaxed */


/* atomic_xchg_relaxed */
#ifndef atomic_xchg_relaxed

#define  atomic_xchg_relaxed		atomic_xchg

#define  atomic_xchg_acquire		atomic_xchg

#define  atomic_xchg_release		atomic_xchg

#else /* atomic_xchg_relaxed */

#ifndef atomic_xchg_acquire

#define  atomic_xchg_acquire(...)					\
	__atomic_op_acquire(atomic_xchg, __VA_ARGS__)
#endif

#ifndef atomic_xchg_release

#define  atomic_xchg_release(...)					\
	__atomic_op_release(atomic_xchg, __VA_ARGS__)
#endif

#ifndef atomic_xchg

#define  atomic_xchg(...)						\
	__atomic_op_fence(atomic_xchg, __VA_ARGS__)
#endif
#endif /* atomic_xchg_relaxed */

/* atomic_cmpxchg_relaxed */
#ifndef atomic_cmpxchg_relaxed

#define  atomic_cmpxchg_relaxed		atomic_cmpxchg

#define  atomic_cmpxchg_acquire		atomic_cmpxchg

#define  atomic_cmpxchg_release		atomic_cmpxchg

#else /* atomic_cmpxchg_relaxed */

#ifndef atomic_cmpxchg_acquire

#define  atomic_cmpxchg_acquire(...)					\
	__atomic_op_acquire(atomic_cmpxchg, __VA_ARGS__)
#endif

#ifndef atomic_cmpxchg_release

#define  atomic_cmpxchg_release(...)					\
	__atomic_op_release(atomic_cmpxchg, __VA_ARGS__)
#endif

#ifndef atomic_cmpxchg

#define  atomic_cmpxchg(...)						\
	__atomic_op_fence(atomic_cmpxchg, __VA_ARGS__)
#endif
#endif /* atomic_cmpxchg_relaxed */

#ifndef atomic_try_cmpxchg


#define __atomic_try_cmpxchg(type, _p, _po, _n)				\
({                                                                      \
        typeof(_po) __po = (_po);                                       \
        typeof(*(_po)) __r, __o = *__po;                                \
        __r = atomic_cmpxchg##type((_p), __o, (_n));                    \
        if (unlikely(__r != __o))                                       \
                *__po = __r;                                            \
        likely(__r == __o);                                             \
})


#define atomic_try_cmpxchg(_p, _po, _n)		__atomic_try_cmpxchg(, _p, _po, _n)

#define atomic_try_cmpxchg_relaxed(_p, _po, _n)	__atomic_try_cmpxchg(_relaxed, _p, _po, _n)

#define atomic_try_cmpxchg_acquire(_p, _po, _n)	__atomic_try_cmpxchg(_acquire, _p, _po, _n)

#define atomic_try_cmpxchg_release(_p, _po, _n)	__atomic_try_cmpxchg(_release, _p, _po, _n)

#else /* atomic_try_cmpxchg */

#define atomic_try_cmpxchg_relaxed	atomic_try_cmpxchg

#define atomic_try_cmpxchg_acquire	atomic_try_cmpxchg

#define atomic_try_cmpxchg_release	atomic_try_cmpxchg
#endif /* atomic_try_cmpxchg */

/* cmpxchg_relaxed */
#ifndef cmpxchg_relaxed

#define  cmpxchg_relaxed		cmpxchg

#define  cmpxchg_acquire		cmpxchg

#define  cmpxchg_release		cmpxchg

#else /* cmpxchg_relaxed */

#ifndef cmpxchg_acquire

#define  cmpxchg_acquire(...)						\
	__atomic_op_acquire(cmpxchg, __VA_ARGS__)
#endif

#ifndef cmpxchg_release

#define  cmpxchg_release(...)						\
	__atomic_op_release(cmpxchg, __VA_ARGS__)
#endif

#ifndef cmpxchg

#define  cmpxchg(...)							\
	__atomic_op_fence(cmpxchg, __VA_ARGS__)
#endif
#endif /* cmpxchg_relaxed */

/* cmpxchg64_relaxed */
#ifndef cmpxchg64_relaxed

#define  cmpxchg64_relaxed		cmpxchg64

#define  cmpxchg64_acquire		cmpxchg64

#define  cmpxchg64_release		cmpxchg64

#else /* cmpxchg64_relaxed */

#ifndef cmpxchg64_acquire

#define  cmpxchg64_acquire(...)						\
	__atomic_op_acquire(cmpxchg64, __VA_ARGS__)
#endif

#ifndef cmpxchg64_release

#define  cmpxchg64_release(...)						\
	__atomic_op_release(cmpxchg64, __VA_ARGS__)
#endif

#ifndef cmpxchg64

#define  cmpxchg64(...)							\
	__atomic_op_fence(cmpxchg64, __VA_ARGS__)
#endif
#endif /* cmpxchg64_relaxed */

/* xchg_relaxed */
#ifndef xchg_relaxed

#define  xchg_relaxed			xchg

#define  xchg_acquire			xchg

#define  xchg_release			xchg

#else /* xchg_relaxed */

#ifndef xchg_acquire

#define  xchg_acquire(...)		__atomic_op_acquire(xchg, __VA_ARGS__)
#endif

#ifndef xchg_release

#define  xchg_release(...)		__atomic_op_release(xchg, __VA_ARGS__)
#endif

#ifndef xchg

#define  xchg(...)			__atomic_op_fence(xchg, __VA_ARGS__)
#endif
#endif /* xchg_relaxed */

/**
 * atomic_add_unless - add unless the number is already a given value
 * @v: pointer of type atomic_t
 * @a: the amount to add to v...
 * @u: ...unless v is equal to u.
 *
 * Atomically adds @a to @v, so long as @v was not already @u.
 * Returns non-zero if @v was not @u, and zero otherwise.
 */

static inline int atomic_add_unless(atomic_t *v, int a, int u) { return __atomic_add_unless(v, a, u) != u; }

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/** * atomic_inc_not_zero - increment unless the number is zero * @v: pointer of type atomic_t * * Atomically increments @v by 1, so long as @v is non-zero. * Returns non-zero if @v was non-zero, and zero otherwise. */ #ifndef atomic_inc_not_zero #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) #endif #ifndef atomic_andnot
static inline void atomic_andnot(int i, atomic_t *v) { atomic_and(~i, v); }

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static inline int atomic_fetch_andnot(int i, atomic_t *v) { return atomic_fetch_and(~i, v); }

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static inline int atomic_fetch_andnot_relaxed(int i, atomic_t *v) { return atomic_fetch_and_relaxed(~i, v); }

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static inline int atomic_fetch_andnot_acquire(int i, atomic_t *v) { return atomic_fetch_and_acquire(~i, v); }

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static inline int atomic_fetch_andnot_release(int i, atomic_t *v) { return atomic_fetch_and_release(~i, v); }

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#endif /** * atomic_inc_not_zero_hint - increment if not null * @v: pointer of type atomic_t * @hint: probable value of the atomic before the increment * * This version of atomic_inc_not_zero() gives a hint of probable * value of the atomic. This helps processor to not read the memory * before doing the atomic read/modify/write cycle, lowering * number of bus transactions on some arches. * * Returns: 0 if increment was not done, 1 otherwise. */ #ifndef atomic_inc_not_zero_hint
static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint) { int val, c = hint; /* sanity test, should be removed by compiler if hint is a constant */ if (!hint) return atomic_inc_not_zero(v); do { val = atomic_cmpxchg(v, c, c + 1); if (val == c) return 1; c = val; } while (c); return 0; }

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#endif #ifndef atomic_inc_unless_negative
static inline int atomic_inc_unless_negative(atomic_t *p) { int v, v1; for (v = 0; v >= 0; v = v1) { v1 = atomic_cmpxchg(p, v, v + 1); if (likely(v1 == v)) return 1; } return 0; }

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#endif #ifndef atomic_dec_unless_positive
static inline int atomic_dec_unless_positive(atomic_t *p) { int v, v1; for (v = 0; v <= 0; v = v1) { v1 = atomic_cmpxchg(p, v, v - 1); if (likely(v1 == v)) return 1; } return 0; }

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#endif /* * atomic_dec_if_positive - decrement by 1 if old value positive * @v: pointer of type atomic_t * * The function returns the old value of *v minus 1, even if * the atomic variable, v, was not decremented. */ #ifndef atomic_dec_if_positive
static inline int atomic_dec_if_positive(atomic_t *v) { int c, old, dec; c = atomic_read(v); for (;;) { dec = c - 1; if (unlikely(dec < 0)) break; old = atomic_cmpxchg((v), c, dec); if (likely(old == c)) break; c = old; } return dec; }

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#endif #ifdef CONFIG_GENERIC_ATOMIC64 #include <asm-generic/atomic64.h> #endif #ifndef atomic64_read_acquire #define atomic64_read_acquire(v) smp_load_acquire(&(v)->counter) #endif #ifndef atomic64_set_release #define atomic64_set_release(v, i) smp_store_release(&(v)->counter, (i)) #endif /* atomic64_add_return_relaxed */ #ifndef atomic64_add_return_relaxed #define atomic64_add_return_relaxed atomic64_add_return #define atomic64_add_return_acquire atomic64_add_return #define atomic64_add_return_release atomic64_add_return #else /* atomic64_add_return_relaxed */ #ifndef atomic64_add_return_acquire #define atomic64_add_return_acquire(...) \ __atomic_op_acquire(atomic64_add_return, __VA_ARGS__) #endif #ifndef atomic64_add_return_release #define atomic64_add_return_release(...) \ __atomic_op_release(atomic64_add_return, __VA_ARGS__) #endif #ifndef atomic64_add_return #define atomic64_add_return(...) \ __atomic_op_fence(atomic64_add_return, __VA_ARGS__) #endif #endif /* atomic64_add_return_relaxed */ /* atomic64_inc_return_relaxed */ #ifndef atomic64_inc_return_relaxed #define atomic64_inc_return_relaxed atomic64_inc_return #define atomic64_inc_return_acquire atomic64_inc_return #define atomic64_inc_return_release atomic64_inc_return #else /* atomic64_inc_return_relaxed */ #ifndef atomic64_inc_return_acquire #define atomic64_inc_return_acquire(...) \ __atomic_op_acquire(atomic64_inc_return, __VA_ARGS__) #endif #ifndef atomic64_inc_return_release #define atomic64_inc_return_release(...) \ __atomic_op_release(atomic64_inc_return, __VA_ARGS__) #endif #ifndef atomic64_inc_return #define atomic64_inc_return(...) \ __atomic_op_fence(atomic64_inc_return, __VA_ARGS__) #endif #endif /* atomic64_inc_return_relaxed */ /* atomic64_sub_return_relaxed */ #ifndef atomic64_sub_return_relaxed #define atomic64_sub_return_relaxed atomic64_sub_return #define atomic64_sub_return_acquire atomic64_sub_return #define atomic64_sub_return_release atomic64_sub_return #else /* atomic64_sub_return_relaxed */ #ifndef atomic64_sub_return_acquire #define atomic64_sub_return_acquire(...) \ __atomic_op_acquire(atomic64_sub_return, __VA_ARGS__) #endif #ifndef atomic64_sub_return_release #define atomic64_sub_return_release(...) \ __atomic_op_release(atomic64_sub_return, __VA_ARGS__) #endif #ifndef atomic64_sub_return #define atomic64_sub_return(...) \ __atomic_op_fence(atomic64_sub_return, __VA_ARGS__) #endif #endif /* atomic64_sub_return_relaxed */ /* atomic64_dec_return_relaxed */ #ifndef atomic64_dec_return_relaxed #define atomic64_dec_return_relaxed atomic64_dec_return #define atomic64_dec_return_acquire atomic64_dec_return #define atomic64_dec_return_release atomic64_dec_return #else /* atomic64_dec_return_relaxed */ #ifndef atomic64_dec_return_acquire #define atomic64_dec_return_acquire(...) \ __atomic_op_acquire(atomic64_dec_return, __VA_ARGS__) #endif #ifndef atomic64_dec_return_release #define atomic64_dec_return_release(...) \ __atomic_op_release(atomic64_dec_return, __VA_ARGS__) #endif #ifndef atomic64_dec_return #define atomic64_dec_return(...) \ __atomic_op_fence(atomic64_dec_return, __VA_ARGS__) #endif #endif /* atomic64_dec_return_relaxed */ /* atomic64_fetch_add_relaxed */ #ifndef atomic64_fetch_add_relaxed #define atomic64_fetch_add_relaxed atomic64_fetch_add #define atomic64_fetch_add_acquire atomic64_fetch_add #define atomic64_fetch_add_release atomic64_fetch_add #else /* atomic64_fetch_add_relaxed */ #ifndef atomic64_fetch_add_acquire #define atomic64_fetch_add_acquire(...) \ __atomic_op_acquire(atomic64_fetch_add, __VA_ARGS__) #endif #ifndef atomic64_fetch_add_release #define atomic64_fetch_add_release(...) \ __atomic_op_release(atomic64_fetch_add, __VA_ARGS__) #endif #ifndef atomic64_fetch_add #define atomic64_fetch_add(...) \ __atomic_op_fence(atomic64_fetch_add, __VA_ARGS__) #endif #endif /* atomic64_fetch_add_relaxed */ /* atomic64_fetch_inc_relaxed */ #ifndef atomic64_fetch_inc_relaxed #ifndef atomic64_fetch_inc #define atomic64_fetch_inc(v) atomic64_fetch_add(1, (v)) #define atomic64_fetch_inc_relaxed(v) atomic64_fetch_add_relaxed(1, (v)) #define atomic64_fetch_inc_acquire(v) atomic64_fetch_add_acquire(1, (v)) #define atomic64_fetch_inc_release(v) atomic64_fetch_add_release(1, (v)) #else /* atomic64_fetch_inc */ #define atomic64_fetch_inc_relaxed atomic64_fetch_inc #define atomic64_fetch_inc_acquire atomic64_fetch_inc #define atomic64_fetch_inc_release atomic64_fetch_inc #endif /* atomic64_fetch_inc */ #else /* atomic64_fetch_inc_relaxed */ #ifndef atomic64_fetch_inc_acquire #define atomic64_fetch_inc_acquire(...) \ __atomic_op_acquire(atomic64_fetch_inc, __VA_ARGS__) #endif #ifndef atomic64_fetch_inc_release #define atomic64_fetch_inc_release(...) \ __atomic_op_release(atomic64_fetch_inc, __VA_ARGS__) #endif #ifndef atomic64_fetch_inc #define atomic64_fetch_inc(...) \ __atomic_op_fence(atomic64_fetch_inc, __VA_ARGS__) #endif #endif /* atomic64_fetch_inc_relaxed */ /* atomic64_fetch_sub_relaxed */ #ifndef atomic64_fetch_sub_relaxed #define atomic64_fetch_sub_relaxed atomic64_fetch_sub #define atomic64_fetch_sub_acquire atomic64_fetch_sub #define atomic64_fetch_sub_release atomic64_fetch_sub #else /* atomic64_fetch_sub_relaxed */ #ifndef atomic64_fetch_sub_acquire #define atomic64_fetch_sub_acquire(...) \ __atomic_op_acquire(atomic64_fetch_sub, __VA_ARGS__) #endif #ifndef atomic64_fetch_sub_release #define atomic64_fetch_sub_release(...) \ __atomic_op_release(atomic64_fetch_sub, __VA_ARGS__) #endif #ifndef atomic64_fetch_sub #define atomic64_fetch_sub(...) \ __atomic_op_fence(atomic64_fetch_sub, __VA_ARGS__) #endif #endif /* atomic64_fetch_sub_relaxed */ /* atomic64_fetch_dec_relaxed */ #ifndef atomic64_fetch_dec_relaxed #ifndef atomic64_fetch_dec #define atomic64_fetch_dec(v) atomic64_fetch_sub(1, (v)) #define atomic64_fetch_dec_relaxed(v) atomic64_fetch_sub_relaxed(1, (v)) #define atomic64_fetch_dec_acquire(v) atomic64_fetch_sub_acquire(1, (v)) #define atomic64_fetch_dec_release(v) atomic64_fetch_sub_release(1, (v)) #else /* atomic64_fetch_dec */ #define atomic64_fetch_dec_relaxed atomic64_fetch_dec #define atomic64_fetch_dec_acquire atomic64_fetch_dec #define atomic64_fetch_dec_release atomic64_fetch_dec #endif /* atomic64_fetch_dec */ #else /* atomic64_fetch_dec_relaxed */ #ifndef atomic64_fetch_dec_acquire #define atomic64_fetch_dec_acquire(...) \ __atomic_op_acquire(atomic64_fetch_dec, __VA_ARGS__) #endif #ifndef atomic64_fetch_dec_release #define atomic64_fetch_dec_release(...) \ __atomic_op_release(atomic64_fetch_dec, __VA_ARGS__) #endif #ifndef atomic64_fetch_dec #define atomic64_fetch_dec(...) \ __atomic_op_fence(atomic64_fetch_dec, __VA_ARGS__) #endif #endif /* atomic64_fetch_dec_relaxed */ /* atomic64_fetch_or_relaxed */ #ifndef atomic64_fetch_or_relaxed #define atomic64_fetch_or_relaxed atomic64_fetch_or #define atomic64_fetch_or_acquire atomic64_fetch_or #define atomic64_fetch_or_release atomic64_fetch_or #else /* atomic64_fetch_or_relaxed */ #ifndef atomic64_fetch_or_acquire #define atomic64_fetch_or_acquire(...) \ __atomic_op_acquire(atomic64_fetch_or, __VA_ARGS__) #endif #ifndef atomic64_fetch_or_release #define atomic64_fetch_or_release(...) \ __atomic_op_release(atomic64_fetch_or, __VA_ARGS__) #endif #ifndef atomic64_fetch_or #define atomic64_fetch_or(...) \ __atomic_op_fence(atomic64_fetch_or, __VA_ARGS__) #endif #endif /* atomic64_fetch_or_relaxed */ /* atomic64_fetch_and_relaxed */ #ifndef atomic64_fetch_and_relaxed #define atomic64_fetch_and_relaxed atomic64_fetch_and #define atomic64_fetch_and_acquire atomic64_fetch_and #define atomic64_fetch_and_release atomic64_fetch_and #else /* atomic64_fetch_and_relaxed */ #ifndef atomic64_fetch_and_acquire #define atomic64_fetch_and_acquire(...) \ __atomic_op_acquire(atomic64_fetch_and, __VA_ARGS__) #endif #ifndef atomic64_fetch_and_release #define atomic64_fetch_and_release(...) \ __atomic_op_release(atomic64_fetch_and, __VA_ARGS__) #endif #ifndef atomic64_fetch_and #define atomic64_fetch_and(...) \ __atomic_op_fence(atomic64_fetch_and, __VA_ARGS__) #endif #endif /* atomic64_fetch_and_relaxed */ #ifdef atomic64_andnot /* atomic64_fetch_andnot_relaxed */ #ifndef atomic64_fetch_andnot_relaxed #define atomic64_fetch_andnot_relaxed atomic64_fetch_andnot #define atomic64_fetch_andnot_acquire atomic64_fetch_andnot #define atomic64_fetch_andnot_release atomic64_fetch_andnot #else /* atomic64_fetch_andnot_relaxed */ #ifndef atomic64_fetch_andnot_acquire #define atomic64_fetch_andnot_acquire(...) \ __atomic_op_acquire(atomic64_fetch_andnot, __VA_ARGS__) #endif #ifndef atomic64_fetch_andnot_release #define atomic64_fetch_andnot_release(...) \ __atomic_op_release(atomic64_fetch_andnot, __VA_ARGS__) #endif #ifndef atomic64_fetch_andnot #define atomic64_fetch_andnot(...) \ __atomic_op_fence(atomic64_fetch_andnot, __VA_ARGS__) #endif #endif /* atomic64_fetch_andnot_relaxed */ #endif /* atomic64_andnot */ /* atomic64_fetch_xor_relaxed */ #ifndef atomic64_fetch_xor_relaxed #define atomic64_fetch_xor_relaxed atomic64_fetch_xor #define atomic64_fetch_xor_acquire atomic64_fetch_xor #define atomic64_fetch_xor_release atomic64_fetch_xor #else /* atomic64_fetch_xor_relaxed */ #ifndef atomic64_fetch_xor_acquire #define atomic64_fetch_xor_acquire(...) \ __atomic_op_acquire(atomic64_fetch_xor, __VA_ARGS__) #endif #ifndef atomic64_fetch_xor_release #define atomic64_fetch_xor_release(...) \ __atomic_op_release(atomic64_fetch_xor, __VA_ARGS__) #endif #ifndef atomic64_fetch_xor #define atomic64_fetch_xor(...) \ __atomic_op_fence(atomic64_fetch_xor, __VA_ARGS__) #endif #endif /* atomic64_fetch_xor_relaxed */ /* atomic64_xchg_relaxed */ #ifndef atomic64_xchg_relaxed #define atomic64_xchg_relaxed atomic64_xchg #define atomic64_xchg_acquire atomic64_xchg #define atomic64_xchg_release atomic64_xchg #else /* atomic64_xchg_relaxed */ #ifndef atomic64_xchg_acquire #define atomic64_xchg_acquire(...) \ __atomic_op_acquire(atomic64_xchg, __VA_ARGS__) #endif #ifndef atomic64_xchg_release #define atomic64_xchg_release(...) \ __atomic_op_release(atomic64_xchg, __VA_ARGS__) #endif #ifndef atomic64_xchg #define atomic64_xchg(...) \ __atomic_op_fence(atomic64_xchg, __VA_ARGS__) #endif #endif /* atomic64_xchg_relaxed */ /* atomic64_cmpxchg_relaxed */ #ifndef atomic64_cmpxchg_relaxed #define atomic64_cmpxchg_relaxed atomic64_cmpxchg #define atomic64_cmpxchg_acquire atomic64_cmpxchg #define atomic64_cmpxchg_release atomic64_cmpxchg #else /* atomic64_cmpxchg_relaxed */ #ifndef atomic64_cmpxchg_acquire #define atomic64_cmpxchg_acquire(...) \ __atomic_op_acquire(atomic64_cmpxchg, __VA_ARGS__) #endif #ifndef atomic64_cmpxchg_release #define atomic64_cmpxchg_release(...) \ __atomic_op_release(atomic64_cmpxchg, __VA_ARGS__) #endif #ifndef atomic64_cmpxchg #define atomic64_cmpxchg(...) \ __atomic_op_fence(atomic64_cmpxchg, __VA_ARGS__) #endif #endif /* atomic64_cmpxchg_relaxed */ #ifndef atomic64_try_cmpxchg #define __atomic64_try_cmpxchg(type, _p, _po, _n) \ ({ \ typeof(_po) __po = (_po); \ typeof(*(_po)) __r, __o = *__po; \ __r = atomic64_cmpxchg##type((_p), __o, (_n)); \ if (unlikely(__r != __o)) \ *__po = __r; \ likely(__r == __o); \ }) #define atomic64_try_cmpxchg(_p, _po, _n) __atomic64_try_cmpxchg(, _p, _po, _n) #define atomic64_try_cmpxchg_relaxed(_p, _po, _n) __atomic64_try_cmpxchg(_relaxed, _p, _po, _n) #define atomic64_try_cmpxchg_acquire(_p, _po, _n) __atomic64_try_cmpxchg(_acquire, _p, _po, _n) #define atomic64_try_cmpxchg_release(_p, _po, _n) __atomic64_try_cmpxchg(_release, _p, _po, _n) #else /* atomic64_try_cmpxchg */ #define atomic64_try_cmpxchg_relaxed atomic64_try_cmpxchg #define atomic64_try_cmpxchg_acquire atomic64_try_cmpxchg #define atomic64_try_cmpxchg_release atomic64_try_cmpxchg #endif /* atomic64_try_cmpxchg */ #ifndef atomic64_andnot
static inline void atomic64_andnot(long long i, atomic64_t *v) { atomic64_and(~i, v); }

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Peter Zijlstra23100.00%1100.00%
Total23100.00%1100.00%


static inline long long atomic64_fetch_andnot(long long i, atomic64_t *v) { return atomic64_fetch_and(~i, v); }

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Peter Zijlstra25100.00%1100.00%
Total25100.00%1100.00%


static inline long long atomic64_fetch_andnot_relaxed(long long i, atomic64_t *v) { return atomic64_fetch_and_relaxed(~i, v); }

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PersonTokensPropCommitsCommitProp
Peter Zijlstra25100.00%1100.00%
Total25100.00%1100.00%


static inline long long atomic64_fetch_andnot_acquire(long long i, atomic64_t *v) { return atomic64_fetch_and_acquire(~i, v); }

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Peter Zijlstra25100.00%1100.00%
Total25100.00%1100.00%


static inline long long atomic64_fetch_andnot_release(long long i, atomic64_t *v) { return atomic64_fetch_and_release(~i, v); }

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Peter Zijlstra25100.00%1100.00%
Total25100.00%1100.00%

#endif #include <asm-generic/atomic-long.h> #endif /* _LINUX_ATOMIC_H */

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PersonTokensPropCommitsCommitProp
Peter Zijlstra167757.53%633.33%
Davidlohr Bueso A65922.61%211.11%
Will Deacon51117.53%15.56%
Eric Dumazet170.58%15.56%
Boqun Feng160.55%15.56%
Al Viro120.41%15.56%
Arun Sharma70.24%316.67%
Shaohua Li60.21%15.56%
Frédéric Weisbecker60.21%15.56%
Anton Blanchard40.14%15.56%
Total2915100.00%18100.00%
Directory: include/linux
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