From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-generic/percpu.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 include/asm-generic/percpu.h (limited to 'include/asm-generic/percpu.h') diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h new file mode 100644 index 00000000000..3b709b84934 --- /dev/null +++ b/include/asm-generic/percpu.h @@ -0,0 +1,42 @@ +#ifndef _ASM_GENERIC_PERCPU_H_ +#define _ASM_GENERIC_PERCPU_H_ +#include + +#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 + +/* 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) per_cpu(var, smp_processor_id()) + +/* 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 /* _ASM_GENERIC_PERCPU_H_ */ -- cgit v1.2.3