projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1965aae3 PA |
1 | #ifndef _ASM_X86_SPINLOCK_TYPES_H |
| 2 | #define _ASM_X86_SPINLOCK_TYPES_H | |
| fb1c8f93 | 3 | |
| 84eb950d JF |
4 | #include <linux/types.h> |
| 5 | ||
| 4a1ed4ca JF |
6 | #ifdef CONFIG_PARAVIRT_SPINLOCKS |
| 7 | #define __TICKET_LOCK_INC 2 | |
| 96f853ea | 8 | #define TICKET_SLOWPATH_FLAG ((__ticket_t)1) |
| 4a1ed4ca JF |
9 | #else |
| 10 | #define __TICKET_LOCK_INC 1 | |
| 96f853ea | 11 | #define TICKET_SLOWPATH_FLAG ((__ticket_t)0) |
| 4a1ed4ca JF |
12 | #endif |
| 13 | ||
| 14 | #if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC)) | |
| 84eb950d | 15 | typedef u8 __ticket_t; |
| 229855d6 | 16 | typedef u16 __ticketpair_t; |
| 84eb950d JF |
17 | #else |
| 18 | typedef u16 __ticket_t; | |
| 229855d6 | 19 | typedef u32 __ticketpair_t; |
| 84eb950d JF |
20 | #endif |
| 21 | ||
| 4a1ed4ca JF |
22 | #define TICKET_LOCK_INC ((__ticket_t)__TICKET_LOCK_INC) |
| 23 | ||
| 84eb950d | 24 | #define TICKET_SHIFT (sizeof(__ticket_t) * 8) |
| 84eb950d | 25 | |
| 445c8951 | 26 | typedef struct arch_spinlock { |
| 84eb950d | 27 | union { |
| 229855d6 | 28 | __ticketpair_t head_tail; |
| 84eb950d JF |
29 | struct __raw_tickets { |
| 30 | __ticket_t head, tail; | |
| 31 | } tickets; | |
| 32 | }; | |
| 445c8951 | 33 | } arch_spinlock_t; |
| fb1c8f93 | 34 | |
| 229855d6 | 35 | #define __ARCH_SPIN_LOCK_UNLOCKED { { 0 } } |
| fb1c8f93 | 36 | |
| bd01ec1a WL |
37 | #ifdef CONFIG_QUEUE_RWLOCK |
| 38 | #include <asm-generic/qrwlock_types.h> | |
| 39 | #else | |
| a750036f | 40 | #include <asm/rwlock.h> |
| bd01ec1a | 41 | #endif |
| fb1c8f93 | 42 | |
| 1965aae3 | 43 | #endif /* _ASM_X86_SPINLOCK_TYPES_H */ |