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| author | David Woodhouse <dwmw2@infradead.org> | 2007-01-18 10:34:51 +1100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-01-18 10:34:51 +1100 |
| commit | 9cdf083f981b8d37b3212400a359368661385099 (patch) | |
| tree | aa15a6a08ad87e650dea40fb59b3180bef0d345b /include/asm-i386/percpu.h | |
| parent | e499e01d234a31d59679b7b1e1cf628d917ba49a (diff) | |
| parent | a8b3485287731978899ced11f24628c927890e78 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/asm-i386/percpu.h')
| -rw-r--r-- | include/asm-i386/percpu.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/asm-i386/percpu.h b/include/asm-i386/percpu.h index 5764afa4b6a..510ae1d3486 100644 --- a/include/asm-i386/percpu.h +++ b/include/asm-i386/percpu.h @@ -1,6 +1,31 @@ #ifndef __ARCH_I386_PERCPU__ #define __ARCH_I386_PERCPU__ +#ifndef __ASSEMBLY__ #include <asm-generic/percpu.h> +#else + +/* + * PER_CPU finds an address of a per-cpu variable. + * + * Args: + * var - variable name + * cpu - 32bit register containing the current CPU number + * + * The resulting address is stored in the "cpu" argument. + * + * Example: + * PER_CPU(cpu_gdt_descr, %ebx) + */ +#ifdef CONFIG_SMP +#define PER_CPU(var, cpu) \ + movl __per_cpu_offset(,cpu,4), cpu; \ + addl $per_cpu__/**/var, cpu; +#else /* ! SMP */ +#define PER_CPU(var, cpu) \ + movl $per_cpu__/**/var, cpu; +#endif /* SMP */ + +#endif /* !__ASSEMBLY__ */ #endif /* __ARCH_I386_PERCPU__ */ |