mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 02:36:49 +07:00
b3a2a05f91
The conditional inc/dec ops differ for atomic_t and atomic64_t: - atomic_inc_unless_positive() is optional for atomic_t, and doesn't exist for atomic64_t. - atomic_dec_unless_negative() is optional for atomic_t, and doesn't exist for atomic64_t. - atomic_dec_if_positive is optional for atomic_t, and is mandatory for atomic64_t. Let's make these consistently optional for both. At the same time, let's clean up the existing fallbacks to use atomic_try_cmpxchg(). The instrumented atomics are updated accordingly. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/lkml/20180621121321.4761-18-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
166 lines
6.2 KiB
C
166 lines
6.2 KiB
C
/*
|
|
* 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_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_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_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_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_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_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_andnot atomic64_andnot
|
|
|
|
#define atomic64_dec_if_positive atomic64_dec_if_positive
|
|
|
|
#endif
|
|
#endif
|