/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_RISCV_SPINLOCK_H #define __ASM_RISCV_SPINLOCK_H #ifdef CONFIG_QUEUED_SPINLOCKS #define _Q_PENDING_LOOPS (1 << 9) #endif #ifdef CONFIG_RISCV_COMBO_SPINLOCKS #define __no_arch_spinlock_redefine #include <asm/ticket_spinlock.h> #include <asm/qspinlock.h> #include <asm/jump_label.h> /* * TODO: Use an alternative instead of a static key when we are able to parse * the extensions string earlier in the boot process. */ DECLARE_STATIC_KEY_TRUE(qspinlock_key); #define SPINLOCK_BASE_DECLARE(op, type, type_lock) \ static __always_inline type arch_spin_##op(type_lock lock) \ { \ if (static_branch_unlikely(&qspinlock_key)) \ return queued_spin_##op(lock); \ return ticket_spin_##op(lock); \ } SPINLOCK_BASE_DECLARE(lock, void, arch_spinlock_t *) SPINLOCK_BASE_DECLARE(unlock, void, arch_spinlock_t *) SPINLOCK_BASE_DECLARE(is_locked, int, arch_spinlock_t *) SPINLOCK_BASE_DECLARE(is_contended, int, arch_spinlock_t *) SPINLOCK_BASE_DECLARE(trylock, bool, arch_spinlock_t *) SPINLOCK_BASE_DECLARE(value_unlocked, int, arch_spinlock_t) #elif defined(CONFIG_RISCV_QUEUED_SPINLOCKS) #include <asm/qspinlock.h> #else #include <asm/ticket_spinlock.h> #endif #include <asm/qrwlock.h> #endif /* __ASM_RISCV_SPINLOCK_H */