| 1 |
|
| 2 | |
| 3 | * Copyright (C) 2020 ARM Ltd.
|
| 4 |
|
| 5 | #ifndef __ASM_VDSO_PROCESSOR_H
|
| 6 | #define __ASM_VDSO_PROCESSOR_H
|
| 7 |
|
| 8 | #ifndef __ASSEMBLY__
|
| 9 |
|
| 10 | #if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
|
| 11 | #define cpu_relax() \
|
| 12 | do { \
|
| 13 | smp_mb(); \
|
| 14 | __asm__ __volatile__("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;"); \
|
| 15 | } while (0)
|
| 16 | #else
|
| 17 | #define cpu_relax() barrier()
|
| 18 | #endif
|
| 19 |
|
| 20 | #endif
|
| 21 |
|
| 22 | #endif
|