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%/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __TOOLS_ASM_GENERIC_ATOMIC_H
#define __TOOLS_ASM_GENERIC_ATOMIC_H
#include
#include
#include
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*
* Excerpts obtained from the Linux kernel sources.
*/
#define ATOMIC_INIT(i) { (i) }
/**
* atomic_read - read atomic variable
* @v: pointer of type atomic_t
*
* Atomically reads the value of @v.
*/
static inline int atomic_read(const atomic_t *v)
{
return READ_ONCE((v)->counter);
}
/**
* atomic_set - set atomic variable
* @v: pointer of type atomic_t
* @i: required value
*
* Atomically sets the value of @v to @i.
*/
static inline void atomic_set(atomic_t *v, int i)
{
v->counter = i;
}
/**
* atomic_inc - increment atomic variable
* @v: pointer of type atomic_t
*
* Atomically increments @v by 1.
*/
static inline void atomic_inc(atomic_t *v)
{
__sync_add_and_fetch(&v->counter, 1);
}
/**
* atomic_dec_and_test - decrement and test
* @v: pointer of type atomic_t
*
* Atomically decrements @v by 1 and
* returns true if the result is 0, or false for all other
* cases.
*/
static inline int atomic_dec_and_test(atomic_t *v)
{
return __sync_sub_and_fetch(&v->counter, 1) == 0;
}
#define cmpxchg(ptr, oldval, newval) \
__sync_val_compare_and_swap(ptr, oldval, newval)
static inline int atomic_cmpxchg(atomic_t *v, int oldval, int newval)
{
return cmpxchg(&(v)->counter, oldval, newval);
}
static inline int test_and_set_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
long old;
addr += BIT_WORD(nr);
old = __sync_fetch_and_or(addr, mask);
return !!(old & mask);
}
static inline int test_and_clear_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
long old;
addr += BIT_WORD(nr);
old = __sync_fetch_and_and(addr, ~mask);
return !!(old & mask);
}
#endif /* __TOOLS_ASM_GENERIC_ATOMIC_H */
'
Am 7O '/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2007-2008 Intel Corporation. All rights reserved.
*
* Maintained at www.Open-FCoE.org
*/
#ifndef _LIBFCOE_H
#define _LIBFCOE_H
#include
#include
#include
#include
#include
#include
#include
#include
#incl