Release 4.14 arch/arm64/include/asm/atomic.h

Directory: arch/arm64/include/asm
/*
 * Based on arch/arm/include/asm/atomic.h
 *
 * Copyright (C) 1996 Russell King.
 * Copyright (C) 2002 Deep Blue Solutions Ltd.
 * Copyright (C) 2012 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __ASM_ATOMIC_H

#define __ASM_ATOMIC_H

#include <linux/compiler.h>
#include <linux/types.h>

#include <asm/barrier.h>
#include <asm/lse.h>

#ifdef __KERNEL__


#define __ARM64_IN_ATOMIC_IMPL

#if defined(CONFIG_ARM64_LSE_ATOMICS) && defined(CONFIG_AS_LSE)
#include <asm/atomic_lse.h>
#else
#include <asm/atomic_ll_sc.h>
#endif


#undef __ARM64_IN_ATOMIC_IMPL

#include <asm/cmpxchg.h>


#define ___atomic_add_unless(v, a, u, sfx)				\
({                                                                      \
        typeof((v)->counter) c, old;                                    \
                                                                        \
        c = atomic##sfx##_read(v);                                      \
        while (c != (u) &&                                              \
              (old = atomic##sfx##_cmpxchg((v), c, c + (a))) != c)      \
                c = old;                                                \
        c;                                                              \
 })


#define ATOMIC_INIT(i)	{ (i) }


#define atomic_read(v)			READ_ONCE((v)->counter)

#define atomic_set(v, i)		WRITE_ONCE(((v)->counter), (i))


#define atomic_add_return_relaxed	atomic_add_return_relaxed

#define atomic_add_return_acquire	atomic_add_return_acquire

#define atomic_add_return_release	atomic_add_return_release

#define atomic_add_return		atomic_add_return


#define atomic_inc_return_relaxed(v)	atomic_add_return_relaxed(1, (v))

#define atomic_inc_return_acquire(v)	atomic_add_return_acquire(1, (v))

#define atomic_inc_return_release(v)	atomic_add_return_release(1, (v))

#define atomic_inc_return(v)		atomic_add_return(1, (v))


#define atomic_sub_return_relaxed	atomic_sub_return_relaxed

#define atomic_sub_return_acquire	atomic_sub_return_acquire

#define atomic_sub_return_release	atomic_sub_return_release

#define atomic_sub_return		atomic_sub_return


#define atomic_dec_return_relaxed(v)	atomic_sub_return_relaxed(1, (v))

#define atomic_dec_return_acquire(v)	atomic_sub_return_acquire(1, (v))

#define atomic_dec_return_release(v)	atomic_sub_return_release(1, (v))

#define atomic_dec_return(v)		atomic_sub_return(1, (v))


#define atomic_fetch_add_relaxed	atomic_fetch_add_relaxed

#define atomic_fetch_add_acquire	atomic_fetch_add_acquire

#define atomic_fetch_add_release	atomic_fetch_add_release

#define atomic_fetch_add		atomic_fetch_add


#define atomic_fetch_sub_relaxed	atomic_fetch_sub_relaxed

#define atomic_fetch_sub_acquire	atomic_fetch_sub_acquire

#define atomic_fetch_sub_release	atomic_fetch_sub_release

#define atomic_fetch_sub		atomic_fetch_sub


#define atomic_fetch_and_relaxed	atomic_fetch_and_relaxed

#define atomic_fetch_and_acquire	atomic_fetch_and_acquire

#define atomic_fetch_and_release	atomic_fetch_and_release

#define atomic_fetch_and		atomic_fetch_and


#define atomic_fetch_andnot_relaxed	atomic_fetch_andnot_relaxed

#define atomic_fetch_andnot_acquire	atomic_fetch_andnot_acquire

#define atomic_fetch_andnot_release	atomic_fetch_andnot_release

#define atomic_fetch_andnot		atomic_fetch_andnot


#define atomic_fetch_or_relaxed		atomic_fetch_or_relaxed

#define atomic_fetch_or_acquire		atomic_fetch_or_acquire

#define atomic_fetch_or_release		atomic_fetch_or_release

#define atomic_fetch_or			atomic_fetch_or


#define atomic_fetch_xor_relaxed	atomic_fetch_xor_relaxed

#define atomic_fetch_xor_acquire	atomic_fetch_xor_acquire

#define atomic_fetch_xor_release	atomic_fetch_xor_release

#define atomic_fetch_xor		atomic_fetch_xor


#define atomic_xchg_relaxed(v, new)	xchg_relaxed(&((v)->counter), (new))

#define atomic_xchg_acquire(v, new)	xchg_acquire(&((v)->counter), (new))

#define atomic_xchg_release(v, new)	xchg_release(&((v)->counter), (new))

#define atomic_xchg(v, new)		xchg(&((v)->counter), (new))


#define atomic_cmpxchg_relaxed(v, old, new)				\
	cmpxchg_relaxed(&((v)->counter), (old), (new))

#define atomic_cmpxchg_acquire(v, old, new)				\
	cmpxchg_acquire(&((v)->counter), (old), (new))

#define atomic_cmpxchg_release(v, old, new)				\
	cmpxchg_release(&((v)->counter), (old), (new))

#define atomic_cmpxchg(v, old, new)	cmpxchg(&((v)->counter), (old), (new))


#define atomic_inc(v)			atomic_add(1, (v))

#define atomic_dec(v)			atomic_sub(1, (v))

#define atomic_inc_and_test(v)		(atomic_inc_return(v) == 0)

#define atomic_dec_and_test(v)		(atomic_dec_return(v) == 0)

#define atomic_sub_and_test(i, v)	(atomic_sub_return((i), (v)) == 0)

#define atomic_add_negative(i, v)	(atomic_add_return((i), (v)) < 0)

#define __atomic_add_unless(v, a, u)	___atomic_add_unless(v, a, u,)

#define atomic_andnot			atomic_andnot

/*
 * 64-bit atomic operations.
 */

#define ATOMIC64_INIT			ATOMIC_INIT

#define atomic64_read			atomic_read

#define atomic64_set			atomic_set


#define atomic64_add_return_relaxed	atomic64_add_return_relaxed

#define atomic64_add_return_acquire	atomic64_add_return_acquire

#define atomic64_add_return_release	atomic64_add_return_release

#define atomic64_add_return		atomic64_add_return


#define atomic64_inc_return_relaxed(v)	atomic64_add_return_relaxed(1, (v))

#define atomic64_inc_return_acquire(v)	atomic64_add_return_acquire(1, (v))

#define atomic64_inc_return_release(v)	atomic64_add_return_release(1, (v))

#define atomic64_inc_return(v)		atomic64_add_return(1, (v))


#define atomic64_sub_return_relaxed	atomic64_sub_return_relaxed

#define atomic64_sub_return_acquire	atomic64_sub_return_acquire

#define atomic64_sub_return_release	atomic64_sub_return_release

#define atomic64_sub_return		atomic64_sub_return


#define atomic64_dec_return_relaxed(v)	atomic64_sub_return_relaxed(1, (v))

#define atomic64_dec_return_acquire(v)	atomic64_sub_return_acquire(1, (v))

#define atomic64_dec_return_release(v)	atomic64_sub_return_release(1, (v))

#define atomic64_dec_return(v)		atomic64_sub_return(1, (v))


#define atomic64_fetch_add_relaxed	atomic64_fetch_add_relaxed

#define atomic64_fetch_add_acquire	atomic64_fetch_add_acquire

#define atomic64_fetch_add_release	atomic64_fetch_add_release

#define atomic64_fetch_add		atomic64_fetch_add


#define atomic64_fetch_sub_relaxed	atomic64_fetch_sub_relaxed

#define atomic64_fetch_sub_acquire	atomic64_fetch_sub_acquire

#define atomic64_fetch_sub_release	atomic64_fetch_sub_release

#define atomic64_fetch_sub		atomic64_fetch_sub


#define atomic64_fetch_and_relaxed	atomic64_fetch_and_relaxed

#define atomic64_fetch_and_acquire	atomic64_fetch_and_acquire

#define atomic64_fetch_and_release	atomic64_fetch_and_release

#define atomic64_fetch_and		atomic64_fetch_and


#define atomic64_fetch_andnot_relaxed	atomic64_fetch_andnot_relaxed

#define atomic64_fetch_andnot_acquire	atomic64_fetch_andnot_acquire

#define atomic64_fetch_andnot_release	atomic64_fetch_andnot_release

#define atomic64_fetch_andnot		atomic64_fetch_andnot


#define atomic64_fetch_or_relaxed	atomic64_fetch_or_relaxed

#define atomic64_fetch_or_acquire	atomic64_fetch_or_acquire

#define atomic64_fetch_or_release	atomic64_fetch_or_release

#define atomic64_fetch_or		atomic64_fetch_or


#define atomic64_fetch_xor_relaxed	atomic64_fetch_xor_relaxed

#define atomic64_fetch_xor_acquire	atomic64_fetch_xor_acquire

#define atomic64_fetch_xor_release	atomic64_fetch_xor_release

#define atomic64_fetch_xor		atomic64_fetch_xor


#define atomic64_xchg_relaxed		atomic_xchg_relaxed

#define atomic64_xchg_acquire		atomic_xchg_acquire

#define atomic64_xchg_release		atomic_xchg_release

#define atomic64_xchg			atomic_xchg


#define atomic64_cmpxchg_relaxed	atomic_cmpxchg_relaxed

#define atomic64_cmpxchg_acquire	atomic_cmpxchg_acquire

#define atomic64_cmpxchg_release	atomic_cmpxchg_release

#define atomic64_cmpxchg		atomic_cmpxchg


#define atomic64_inc(v)			atomic64_add(1, (v))

#define atomic64_dec(v)			atomic64_sub(1, (v))

#define atomic64_inc_and_test(v)	(atomic64_inc_return(v) == 0)

#define atomic64_dec_and_test(v)	(atomic64_dec_return(v) == 0)

#define atomic64_sub_and_test(i, v)	(atomic64_sub_return((i), (v)) == 0)

#define atomic64_add_negative(i, v)	(atomic64_add_return((i), (v)) < 0)

#define atomic64_add_unless(v, a, u)	(___atomic_add_unless(v, a, u, 64) != u)

#define atomic64_andnot			atomic64_andnot


#define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)

#endif
#endif
Overall Contributors
Person Tokens Prop Commits CommitProp
Will Deacon 378 52.65% 7 70.00%
Peter Zijlstra 193 26.88% 2 20.00%
Catalin Marinas 147 20.47% 1 10.00%
Total 718 100.00% 10 100.00%
Directory: arch/arm64/include/asm

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Person	Tokens	Prop	Commits	CommitProp
Will Deacon	378	52.65%	7	70.00%
Peter Zijlstra	193	26.88%	2	20.00%
Catalin Marinas	147	20.47%	1	10.00%
Total	718	100.00%	10	100.00%
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Release 4.14 arch/arm64/include/asm/atomic.h

Overall Contributors
