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 | |
David S. Miller | 195f7fd | 2007-08-18 00:07:40 -0700 | [diff] [blame] | 6 | register unsigned long __local_per_cpu_offset asm("g5"); |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #ifdef CONFIG_SMP |
| 9 | |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 10 | #define setup_per_cpu_areas() do { } while (0) |
| 11 | extern void real_setup_per_cpu_areas(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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)) |
Ingo Molnar | a875a69 | 2006-07-03 00:24:26 -0700 | [diff] [blame] | 17 | #define per_cpu_offset(x) (__per_cpu_offset(x)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | /* var is in discarded region: offset to particular copy we want */ |
| 20 | #define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu))) |
| 21 | #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] | 22 | #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] | 23 | |
| 24 | /* A macro to avoid #include hell... */ |
| 25 | #define percpu_modcopy(pcpudst, src, size) \ |
| 26 | do { \ |
| 27 | unsigned int __i; \ |
KAMEZAWA Hiroyuki | a283a52 | 2006-04-10 22:52:52 -0700 | [diff] [blame] | 28 | for_each_possible_cpu(__i) \ |
Andrew Morton | 394e390 | 2006-03-23 03:01:05 -0800 | [diff] [blame] | 29 | memcpy((pcpudst)+__per_cpu_offset(__i), \ |
| 30 | (src), (size)); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | } while (0) |
| 32 | #else /* ! SMP */ |
| 33 | |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 34 | #define real_setup_per_cpu_areas() do { } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | #define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var)) |
| 37 | #define __get_cpu_var(var) per_cpu__##var |
Paul Mackerras | bfe5d83 | 2006-06-25 05:47:14 -0700 | [diff] [blame] | 38 | #define __raw_get_cpu_var(var) per_cpu__##var |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
| 40 | #endif /* SMP */ |
| 41 | |
| 42 | #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #endif /* __ARCH_SPARC64_PERCPU__ */ |