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author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 21:13:20 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 21:13:20 +0200 |
commit | f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c (patch) | |
tree | c5643fcdc884a8d0bfc3f1bc28039cab7394e5bc /include/asm-x86/percpu.h | |
parent | 323ec001c6bb98eeabb5abbdbb8c8055d9496554 (diff) | |
parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
download | op-kernel-dev-f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c.zip op-kernel-dev-f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c.tar.gz |
Merge branch 'linus' into core/generic-dma-coherent
Conflicts:
kernel/Makefile
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/percpu.h')
-rw-r--r-- | include/asm-x86/percpu.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/asm-x86/percpu.h b/include/asm-x86/percpu.h index 736fc3b..912a3a1 100644 --- a/include/asm-x86/percpu.h +++ b/include/asm-x86/percpu.h @@ -143,4 +143,50 @@ do { \ #define x86_or_percpu(var, val) percpu_to_op("or", per_cpu__##var, val) #endif /* !__ASSEMBLY__ */ #endif /* !CONFIG_X86_64 */ + +#ifdef CONFIG_SMP + +/* + * Define the "EARLY_PER_CPU" macros. These are used for some per_cpu + * variables that are initialized and accessed before there are per_cpu + * areas allocated. + */ + +#define DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) \ + DEFINE_PER_CPU(_type, _name) = _initvalue; \ + __typeof__(_type) _name##_early_map[NR_CPUS] __initdata = \ + { [0 ... NR_CPUS-1] = _initvalue }; \ + __typeof__(_type) *_name##_early_ptr = _name##_early_map + +#define EXPORT_EARLY_PER_CPU_SYMBOL(_name) \ + EXPORT_PER_CPU_SYMBOL(_name) + +#define DECLARE_EARLY_PER_CPU(_type, _name) \ + DECLARE_PER_CPU(_type, _name); \ + extern __typeof__(_type) *_name##_early_ptr; \ + extern __typeof__(_type) _name##_early_map[] + +#define early_per_cpu_ptr(_name) (_name##_early_ptr) +#define early_per_cpu_map(_name, _idx) (_name##_early_map[_idx]) +#define early_per_cpu(_name, _cpu) \ + (early_per_cpu_ptr(_name) ? \ + early_per_cpu_ptr(_name)[_cpu] : \ + per_cpu(_name, _cpu)) + +#else /* !CONFIG_SMP */ +#define DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) \ + DEFINE_PER_CPU(_type, _name) = _initvalue + +#define EXPORT_EARLY_PER_CPU_SYMBOL(_name) \ + EXPORT_PER_CPU_SYMBOL(_name) + +#define DECLARE_EARLY_PER_CPU(_type, _name) \ + DECLARE_PER_CPU(_type, _name) + +#define early_per_cpu(_name, _cpu) per_cpu(_name, _cpu) +#define early_per_cpu_ptr(_name) NULL +/* no early_per_cpu_map() */ + +#endif /* !CONFIG_SMP */ + #endif /* _ASM_X86_PERCPU_H_ */ |