diff options
Diffstat (limited to 'include/linux/percpu.h')
| -rw-r--r-- | include/linux/percpu.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 926adaae0f96..00412bb494c4 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -9,6 +9,30 @@ #include <asm/percpu.h> +#ifndef PER_CPU_ATTRIBUTES +#define PER_CPU_ATTRIBUTES +#endif + +#ifdef CONFIG_SMP +#define DEFINE_PER_CPU(type, name) \ + __attribute__((__section__(".data.percpu"))) \ + PER_CPU_ATTRIBUTES __typeof__(type) per_cpu__##name + +#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \ + __attribute__((__section__(".data.percpu.shared_aligned"))) \ + PER_CPU_ATTRIBUTES __typeof__(type) per_cpu__##name \ + ____cacheline_aligned_in_smp +#else +#define DEFINE_PER_CPU(type, name) \ + PER_CPU_ATTRIBUTES __typeof__(type) per_cpu__##name + +#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \ + DEFINE_PER_CPU(type, name) +#endif + +#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var) +#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) + /* Enough to cover all DEFINE_PER_CPUs in kernel, including modules. */ #ifndef PERCPU_ENOUGH_ROOM #ifdef CONFIG_MODULES |