projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ARCH_SPARC64_PERCPU__ |
| 2 | #define __ARCH_SPARC64_PERCPU__ | |
| 3 | ||
| 4 | #include <linux/compiler.h> | |
| 5 | ||
| 195f7fd0 DM |
6 | register unsigned long __local_per_cpu_offset asm("g5"); |
| 7 | ||
| 1da177e4 LT |
8 | #ifdef CONFIG_SMP |
| 9 | ||
| 5cbc3073 DM |
10 | #define setup_per_cpu_areas() do { } while (0) |
| 11 | extern void real_setup_per_cpu_areas(void); | |
| 1da177e4 LT |
12 | |
| 13 | extern unsigned long __per_cpu_base; | |
| 14 | extern unsigned long __per_cpu_shift; | |
| 15 | #define __per_cpu_offset(__cpu) \ | |
| 16 | (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift)) | |
| a875a69f | 17 | #define per_cpu_offset(x) (__per_cpu_offset(x)) |
| 1da177e4 LT |
18 | |
| 19 | /* Separate out the type, so (int[3], foo) works. */ | |
| 20 | #define DEFINE_PER_CPU(type, name) \ | |
| 21 | __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name | |
| 22 | ||
| 5fb7dc37 FY |
23 | #define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \ |
| 24 | __attribute__((__section__(".data.percpu.shared_aligned"))) \ | |
| 25 | __typeof__(type) per_cpu__##name \ | |
| 26 | ____cacheline_aligned_in_smp | |
| 27 | ||
| 1da177e4 LT |
28 | /* var is in discarded region: offset to particular copy we want */ |
| 29 | #define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu))) | |
| 30 | #define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) | |
| bfe5d834 | 31 | #define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) |
| 1da177e4 LT |
32 | |
| 33 | /* A macro to avoid #include hell... */ | |
| 34 | #define percpu_modcopy(pcpudst, src, size) \ | |
| 35 | do { \ | |
| 36 | unsigned int __i; \ | |
| a283a525 | 37 | for_each_possible_cpu(__i) \ |
| 394e3902 AM |
38 | memcpy((pcpudst)+__per_cpu_offset(__i), \ |
| 39 | (src), (size)); \ | |
| 1da177e4 LT |
40 | } while (0) |
| 41 | #else /* ! SMP */ | |
| 42 | ||
| 5cbc3073 | 43 | #define real_setup_per_cpu_areas() do { } while (0) |
| 1da177e4 LT |
44 | #define DEFINE_PER_CPU(type, name) \ |
| 45 | __typeof__(type) per_cpu__##name | |
| 5fb7dc37 FY |
46 | #define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \ |
| 47 | DEFINE_PER_CPU(type, name) | |
| 1da177e4 LT |
48 | |
| 49 | #define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var)) | |
| 50 | #define __get_cpu_var(var) per_cpu__##var | |
| bfe5d834 | 51 | #define __raw_get_cpu_var(var) per_cpu__##var |
| 1da177e4 LT |
52 | |
| 53 | #endif /* SMP */ | |
| 54 | ||
| 55 | #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name | |
| 56 | ||
| 57 | #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var) | |
| 58 | #define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) | |
| 59 | ||
| 60 | #endif /* __ARCH_SPARC64_PERCPU__ */ |