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c0df108128
Now that the generic atomic headers provide instrumented wrappers of all
the atomics implemented by arm64, let's migrate arm64 over to these.
The additional instrumentation will help to find bugs (e.g. when fuzzing
with Syzkaller).
Mostly this change involves adding an arch_ prefix to a number of
function names and macro definitions. When LSE atomics are used, the
out-of-line LL/SC atomics will be named __ll_sc_arch_atomic_${OP}.
Adding the arch_ prefix requires some whitespace fixups to keep things
aligned. Some other unusual whitespace is fixed up at the same time
(e.g. in the cmpxchg wrappers).
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linuxdrivers@attotech.com
Cc: dvyukov@google.com
Cc: boqun.feng@gmail.com
Cc: arnd@arndb.de
Cc: aryabinin@virtuozzo.com
Cc: glider@google.com
Link: http://lkml.kernel.org/r/20180904104830.2975-7-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
173 lines
7.1 KiB
C
173 lines
7.1 KiB
C
/*
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* Based on arch/arm/include/asm/atomic.h
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*
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* Copyright (C) 1996 Russell King.
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* Copyright (C) 2002 Deep Blue Solutions Ltd.
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_ATOMIC_H
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#define __ASM_ATOMIC_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/barrier.h>
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#include <asm/lse.h>
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#ifdef __KERNEL__
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#define __ARM64_IN_ATOMIC_IMPL
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#if defined(CONFIG_ARM64_LSE_ATOMICS) && defined(CONFIG_AS_LSE)
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#include <asm/atomic_lse.h>
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#else
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#include <asm/atomic_ll_sc.h>
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#endif
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#undef __ARM64_IN_ATOMIC_IMPL
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#include <asm/cmpxchg.h>
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#define ATOMIC_INIT(i) { (i) }
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#define arch_atomic_read(v) READ_ONCE((v)->counter)
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#define arch_atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
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#define arch_atomic_add_return_relaxed arch_atomic_add_return_relaxed
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#define arch_atomic_add_return_acquire arch_atomic_add_return_acquire
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#define arch_atomic_add_return_release arch_atomic_add_return_release
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#define arch_atomic_add_return arch_atomic_add_return
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#define arch_atomic_sub_return_relaxed arch_atomic_sub_return_relaxed
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#define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire
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#define arch_atomic_sub_return_release arch_atomic_sub_return_release
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#define arch_atomic_sub_return arch_atomic_sub_return
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#define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add_relaxed
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#define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire
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#define arch_atomic_fetch_add_release arch_atomic_fetch_add_release
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#define arch_atomic_fetch_add arch_atomic_fetch_add
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#define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub_relaxed
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#define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire
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#define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release
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#define arch_atomic_fetch_sub arch_atomic_fetch_sub
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#define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and_relaxed
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#define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire
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#define arch_atomic_fetch_and_release arch_atomic_fetch_and_release
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#define arch_atomic_fetch_and arch_atomic_fetch_and
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#define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed
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#define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
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#define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
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#define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
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#define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or_relaxed
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#define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
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#define arch_atomic_fetch_or_release arch_atomic_fetch_or_release
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#define arch_atomic_fetch_or arch_atomic_fetch_or
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#define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor_relaxed
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#define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire
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#define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release
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#define arch_atomic_fetch_xor arch_atomic_fetch_xor
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#define arch_atomic_xchg_relaxed(v, new) \
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arch_xchg_relaxed(&((v)->counter), (new))
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#define arch_atomic_xchg_acquire(v, new) \
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arch_xchg_acquire(&((v)->counter), (new))
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#define arch_atomic_xchg_release(v, new) \
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arch_xchg_release(&((v)->counter), (new))
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#define arch_atomic_xchg(v, new) \
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arch_xchg(&((v)->counter), (new))
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#define arch_atomic_cmpxchg_relaxed(v, old, new) \
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arch_cmpxchg_relaxed(&((v)->counter), (old), (new))
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#define arch_atomic_cmpxchg_acquire(v, old, new) \
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arch_cmpxchg_acquire(&((v)->counter), (old), (new))
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#define arch_atomic_cmpxchg_release(v, old, new) \
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arch_cmpxchg_release(&((v)->counter), (old), (new))
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#define arch_atomic_cmpxchg(v, old, new) \
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arch_cmpxchg(&((v)->counter), (old), (new))
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#define arch_atomic_andnot arch_atomic_andnot
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/*
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* 64-bit arch_atomic operations.
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*/
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#define ATOMIC64_INIT ATOMIC_INIT
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#define arch_atomic64_read arch_atomic_read
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#define arch_atomic64_set arch_atomic_set
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#define arch_atomic64_add_return_relaxed arch_atomic64_add_return_relaxed
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#define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire
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#define arch_atomic64_add_return_release arch_atomic64_add_return_release
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#define arch_atomic64_add_return arch_atomic64_add_return
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#define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return_relaxed
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#define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire
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#define arch_atomic64_sub_return_release arch_atomic64_sub_return_release
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#define arch_atomic64_sub_return arch_atomic64_sub_return
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#define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add_relaxed
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#define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire
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#define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release
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#define arch_atomic64_fetch_add arch_atomic64_fetch_add
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#define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub_relaxed
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#define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire
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#define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release
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#define arch_atomic64_fetch_sub arch_atomic64_fetch_sub
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#define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and_relaxed
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#define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire
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#define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release
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#define arch_atomic64_fetch_and arch_atomic64_fetch_and
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#define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed
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#define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
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#define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
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#define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
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#define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or_relaxed
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#define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
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#define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release
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#define arch_atomic64_fetch_or arch_atomic64_fetch_or
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#define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor_relaxed
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#define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire
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#define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release
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#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
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#define arch_atomic64_xchg_relaxed arch_atomic_xchg_relaxed
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#define arch_atomic64_xchg_acquire arch_atomic_xchg_acquire
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#define arch_atomic64_xchg_release arch_atomic_xchg_release
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#define arch_atomic64_xchg arch_atomic_xchg
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#define arch_atomic64_cmpxchg_relaxed arch_atomic_cmpxchg_relaxed
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#define arch_atomic64_cmpxchg_acquire arch_atomic_cmpxchg_acquire
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#define arch_atomic64_cmpxchg_release arch_atomic_cmpxchg_release
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#define arch_atomic64_cmpxchg arch_atomic_cmpxchg
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#define arch_atomic64_andnot arch_atomic64_andnot
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#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
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#include <asm-generic/atomic-instrumented.h>
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#endif
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#endif
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