diff options
Diffstat (limited to 'arch/csky/include/asm/spinlock_types.h')
-rw-r--r-- | arch/csky/include/asm/spinlock_types.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/csky/include/asm/spinlock_types.h b/arch/csky/include/asm/spinlock_types.h new file mode 100644 index 000000000000..88b82438b182 --- /dev/null +++ b/arch/csky/include/asm/spinlock_types.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_SPINLOCK_TYPES_H +#define __ASM_CSKY_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +#define TICKET_NEXT 16 + +typedef struct { + union { + u32 lock; + struct __raw_tickets { + /* little endian */ + u16 owner; + u16 next; + } tickets; + }; +} arch_spinlock_t; + +#define __ARCH_SPIN_LOCK_UNLOCKED { { 0 } } + +#ifdef CONFIG_QUEUED_RWLOCKS +#include <asm-generic/qrwlock_types.h> + +#else /* CONFIG_NR_CPUS > 2 */ + +typedef struct { + u32 lock; +} arch_rwlock_t; + +#define __ARCH_RW_LOCK_UNLOCKED { 0 } + +#endif /* CONFIG_QUEUED_RWLOCKS */ +#endif /* __ASM_CSKY_SPINLOCK_TYPES_H */ |