diff options
Diffstat (limited to 'include/asm-sparc64/percpu.h')
| -rw-r--r-- | include/asm-sparc64/percpu.h | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h index 8571d6d1a9dfe..80d66d31b62d6 100644 --- a/include/asm-sparc64/percpu.h +++ b/include/asm-sparc64/percpu.h @@ -1,6 +1,45 @@ #ifndef __ARCH_SPARC64_PERCPU__ #define __ARCH_SPARC64_PERCPU__ -#include <asm-generic/percpu.h> +#include <linux/compiler.h> + +#define __GENERIC_PER_CPU +#ifdef CONFIG_SMP + +extern unsigned long __per_cpu_offset[NR_CPUS]; + +/* Separate out the type, so (int[3], foo) works. */ +#define DEFINE_PER_CPU(type, name) \ + __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name + +register unsigned long __local_per_cpu_offset asm("g5"); + +/* var is in discarded region: offset to particular copy we want */ +#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu])) +#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) + +/* A macro to avoid #include hell... */ +#define percpu_modcopy(pcpudst, src, size) \ +do { \ + unsigned int __i; \ + for (__i = 0; __i < NR_CPUS; __i++) \ + if (cpu_possible(__i)) \ + memcpy((pcpudst)+__per_cpu_offset[__i], \ + (src), (size)); \ +} while (0) +#else /* ! SMP */ + +#define DEFINE_PER_CPU(type, name) \ + __typeof__(type) per_cpu__##name + +#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var)) +#define __get_cpu_var(var) per_cpu__##var + +#endif /* SMP */ + +#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name + +#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var) +#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) #endif /* __ARCH_SPARC64_PERCPU__ */ |