Warning: That file was not part of the compilation database. It may have many parsing errors.
| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef _ALPHA_CMPXCHG_H |
| 3 | #define _ALPHA_CMPXCHG_H |
| 4 | |
| 5 | /* |
| 6 | * Atomic exchange routines. |
| 7 | */ |
| 8 | |
| 9 | #define ____xchg(type, args...) __arch_xchg ## type ## _local(args) |
| 10 | #define ____cmpxchg(type, args...) __cmpxchg ## type ## _local(args) |
| 11 | #include <asm/xchg.h> |
| 12 | |
| 13 | #define xchg_local(ptr, x) \ |
| 14 | ({ \ |
| 15 | __typeof__(*(ptr)) _x_ = (x); \ |
| 16 | (__typeof__(*(ptr))) __arch_xchg_local((ptr), (unsigned long)_x_,\ |
| 17 | sizeof(*(ptr))); \ |
| 18 | }) |
| 19 | |
| 20 | #define arch_cmpxchg_local(ptr, o, n) \ |
| 21 | ({ \ |
| 22 | __typeof__(*(ptr)) _o_ = (o); \ |
| 23 | __typeof__(*(ptr)) _n_ = (n); \ |
| 24 | (__typeof__(*(ptr))) __cmpxchg_local((ptr), (unsigned long)_o_, \ |
| 25 | (unsigned long)_n_, \ |
| 26 | sizeof(*(ptr))); \ |
| 27 | }) |
| 28 | |
| 29 | #define arch_cmpxchg64_local(ptr, o, n) \ |
| 30 | ({ \ |
| 31 | BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ |
| 32 | cmpxchg_local((ptr), (o), (n)); \ |
| 33 | }) |
| 34 | |
| 35 | #undef ____xchg |
| 36 | #undef ____cmpxchg |
| 37 | #define ____xchg(type, args...) __arch_xchg ##type(args) |
| 38 | #define ____cmpxchg(type, args...) __cmpxchg ##type(args) |
| 39 | #include <asm/xchg.h> |
| 40 | |
| 41 | /* |
| 42 | * The leading and the trailing memory barriers guarantee that these |
| 43 | * operations are fully ordered. |
| 44 | */ |
| 45 | #define arch_xchg(ptr, x) \ |
| 46 | ({ \ |
| 47 | __typeof__(*(ptr)) __ret; \ |
| 48 | __typeof__(*(ptr)) _x_ = (x); \ |
| 49 | smp_mb(); \ |
| 50 | __ret = (__typeof__(*(ptr))) \ |
| 51 | __arch_xchg((ptr), (unsigned long)_x_, sizeof(*(ptr))); \ |
| 52 | smp_mb(); \ |
| 53 | __ret; \ |
| 54 | }) |
| 55 | |
| 56 | #define arch_cmpxchg(ptr, o, n) \ |
| 57 | ({ \ |
| 58 | __typeof__(*(ptr)) __ret; \ |
| 59 | __typeof__(*(ptr)) _o_ = (o); \ |
| 60 | __typeof__(*(ptr)) _n_ = (n); \ |
| 61 | smp_mb(); \ |
| 62 | __ret = (__typeof__(*(ptr))) __cmpxchg((ptr), \ |
| 63 | (unsigned long)_o_, (unsigned long)_n_, sizeof(*(ptr)));\ |
| 64 | smp_mb(); \ |
| 65 | __ret; \ |
| 66 | }) |
| 67 | |
| 68 | #define arch_cmpxchg64(ptr, o, n) \ |
| 69 | ({ \ |
| 70 | BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ |
| 71 | arch_cmpxchg((ptr), (o), (n)); \ |
| 72 | }) |
| 73 | |
| 74 | #undef ____cmpxchg |
| 75 | |
| 76 | #endif /* _ALPHA_CMPXCHG_H */ |
| 77 |
Warning: That file was not part of the compilation database. It may have many parsing errors.