Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ARCH_SPARC64_PERCPU__ |
| 2 | #define __ARCH_SPARC64_PERCPU__ |
| 3 | |
| 4 | #include <linux/compiler.h> |
| 5 | |
| 6 | #ifdef CONFIG_SMP |
| 7 | |
| 8 | extern void setup_per_cpu_areas(void); |
| 9 | |
| 10 | extern unsigned long __per_cpu_base; |
| 11 | extern unsigned long __per_cpu_shift; |
| 12 | #define __per_cpu_offset(__cpu) \ |
| 13 | (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift)) |
| 14 | |
| 15 | /* Separate out the type, so (int[3], foo) works. */ |
| 16 | #define DEFINE_PER_CPU(type, name) \ |
| 17 | __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name |
| 18 | |
| 19 | register unsigned long __local_per_cpu_offset asm("g5"); |
| 20 | |
| 21 | /* var is in discarded region: offset to particular copy we want */ |
| 22 | #define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu))) |
| 23 | #define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) |
Paul Mackerras | bfe5d83 | 2006-06-25 05:47:14 -0700 | [diff] [blame^] | 24 | #define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | /* A macro to avoid #include hell... */ |
| 27 | #define percpu_modcopy(pcpudst, src, size) \ |
| 28 | do { \ |
| 29 | unsigned int __i; \ |
KAMEZAWA Hiroyuki | a283a52 | 2006-04-10 22:52:52 -0700 | [diff] [blame] | 30 | for_each_possible_cpu(__i) \ |
Andrew Morton | 394e390 | 2006-03-23 03:01:05 -0800 | [diff] [blame] | 31 | memcpy((pcpudst)+__per_cpu_offset(__i), \ |
| 32 | (src), (size)); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | } while (0) |
| 34 | #else /* ! SMP */ |
| 35 | |
| 36 | #define DEFINE_PER_CPU(type, name) \ |
| 37 | __typeof__(type) per_cpu__##name |
| 38 | |
| 39 | #define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var)) |
| 40 | #define __get_cpu_var(var) per_cpu__##var |
Paul Mackerras | bfe5d83 | 2006-06-25 05:47:14 -0700 | [diff] [blame^] | 41 | #define __raw_get_cpu_var(var) per_cpu__##var |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #endif /* SMP */ |
| 44 | |
| 45 | #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name |
| 46 | |
| 47 | #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var) |
| 48 | #define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) |
| 49 | |
| 50 | #endif /* __ARCH_SPARC64_PERCPU__ */ |