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/*
 * 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

Filemanager

Name Type Size Permission Actions
xen Folder 0755
Kbuild File 703 B 0644
acenv.h File 541 B 0644
acpi.h File 4.34 KB 0644
alternative.h File 7.63 KB 0644
arch_gicv3.h File 3.44 KB 0644
arch_timer.h File 4.87 KB 0644
arm-cci.h File 794 B 0644
asm-bug.h File 1.45 KB 0644
asm-offsets.h File 35 B 0644
asm-uaccess.h File 2.09 KB 0644
assembler.h File 13.51 KB 0644
atomic.h File 8.35 KB 0644
atomic_ll_sc.h File 10.61 KB 0644
atomic_lse.h File 14.82 KB 0644
barrier.h File 3.78 KB 0644
bitops.h File 1.9 KB 0644
bitrev.h File 452 B 0644
boot.h File 384 B 0644
brk-imm.h File 706 B 0644
bug.h File 1.09 KB 0644
cache.h File 2.23 KB 0644
cacheflush.h File 4.87 KB 0644
checksum.h File 1.35 KB 0644
clocksource.h File 192 B 0644
cmpxchg.h File 7.98 KB 0644
compat.h File 7.15 KB 0644
compiler.h File 1.18 KB 0644
cpu.h File 1.84 KB 0644
cpu_ops.h File 2.73 KB 0644
cpucaps.h File 1.87 KB 0644
cpufeature.h File 19.14 KB 0644
cpuidle.h File 401 B 0644
cputype.h File 8.1 KB 0644
current.h File 517 B 0644
daifflags.h File 1.59 KB 0644
dcc.h File 1.36 KB 0644
debug-monitors.h File 3.76 KB 0644
device.h File 886 B 0644
dma-mapping.h File 2.42 KB 0644
dmi.h File 850 B 0644
efi.h File 4.57 KB 0644
elf.h File 5.7 KB 0644
esr.h File 9.02 KB 0644
exception.h File 1.21 KB 0644
exec.h File 868 B 0644
extable.h File 815 B 0644
fb.h File 1000 B 0644
fixmap.h File 2.91 KB 0644
fpsimd.h File 4.21 KB 0644
fpsimdmacros.h File 5.62 KB 0644
ftrace.h File 1.92 KB 0644
futex.h File 3.41 KB 0644
hardirq.h File 2.08 KB 0644
hugetlb.h File 2.71 KB 0644
hw_breakpoint.h File 4.46 KB 0644
hwcap.h File 1.86 KB 0644
hypervisor.h File 144 B 0644
insn.h File 16.03 KB 0644
io.h File 7.72 KB 0644
irq.h File 307 B 0644
irq_work.h File 228 B 0644
irqflags.h File 2.3 KB 0644
jump_label.h File 1.68 KB 0644
kasan.h File 1.16 KB 0644
kernel-pgtable.h File 4.03 KB 0644
kexec.h File 2.42 KB 0644
kgdb.h File 3.79 KB 0644
kprobes.h File 1.74 KB 0644
kvm_arm.h File 8.38 KB 0644
kvm_asm.h File 4.26 KB 0644
kvm_coproc.h File 2.04 KB 0644
kvm_emulate.h File 10.38 KB 0644
kvm_host.h File 15.73 KB 0644
kvm_hyp.h File 5.79 KB 0644
kvm_mmio.h File 1.3 KB 0644
kvm_mmu.h File 11.72 KB 0644
linkage.h File 114 B 0644
lse.h File 1.26 KB 0644
memblock.h File 720 B 0644
memory.h File 9.16 KB 0644
mmu.h File 2.76 KB 0644
mmu_context.h File 6.35 KB 0644
mmzone.h File 266 B 0644
module.h File 2.8 KB 0644
neon.h File 815 B 0644
numa.h File 1.33 KB 0644
page-def.h File 1.17 KB 0644
page.h File 1.61 KB 0644
paravirt.h File 458 B 0644
pci.h File 878 B 0644
percpu.h File 7.48 KB 0644
perf_event.h File 3.17 KB 0644
pgalloc.h File 3.71 KB 0644
pgtable-hwdef.h File 9.4 KB 0644
pgtable-prot.h File 4.38 KB 0644
pgtable-types.h File 1.84 KB 0644
pgtable.h File 21.55 KB 0644
probes.h File 1022 B 0644
proc-fns.h File 1.21 KB 0644
processor.h File 6.52 KB 0644
ptdump.h File 1.42 KB 0644
ptrace.h File 9 KB 0644
sdei.h File 1.46 KB 0644
seccomp.h File 714 B 0644
sections.h File 1.46 KB 0644
shmparam.h File 965 B 0644
signal32.h File 1.45 KB 0644
simd.h File 1.39 KB 0644
smp.h File 4.23 KB 0644
smp_plat.h File 1.43 KB 0644
sparsemem.h File 771 B 0644
spinlock.h File 3.33 KB 0644
spinlock_types.h File 1.06 KB 0644
stack_pointer.h File 247 B 0644
stackprotector.h File 1.11 KB 0644
stacktrace.h File 2.53 KB 0644
stage2_pgtable-nopmd.h File 1.3 KB 0644
stage2_pgtable-nopud.h File 1.24 KB 0644
stage2_pgtable.h File 4.89 KB 0644
stat.h File 1.43 KB 0644
string.h File 2.33 KB 0644
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timex.h File 883 B 0644
tlb.h File 2.22 KB 0644
tlbflush.h File 5.38 KB 0644
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traps.h File 3.33 KB 0644
uaccess.h File 12.01 KB 0644
unistd.h File 1.6 KB 0644
unistd32.h File 27.53 KB 0644
uprobes.h File 777 B 0644
vdso.h File 1.09 KB 0644
vdso_datapage.h File 1.53 KB 0644
vectors.h File 1.75 KB 0644
virt.h File 3 KB 0644
vmap_stack.h File 769 B 0644
word-at-a-time.h File 2.22 KB 0644