include/asm-sparc64/percpu.h

   1 #ifndef __ARCH_SPARC64_PERCPU__
   2 #define __ARCH_SPARC64_PERCPU__
   3
   4 #include <linux/compiler.h>
   5
   6 register unsigned long __local_per_cpu_offset asm("g5");
   7
   8 #ifdef CONFIG_SMP
   9
  10 #define setup_per_cpu_areas()                   do { } while (0)
  11 extern void real_setup_per_cpu_areas(void);
  12
  13 extern unsigned long __per_cpu_base;
  14 extern unsigned long __per_cpu_shift;
  15 #define __per_cpu_offset(__cpu) \
  16         (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
  17 #define per_cpu_offset(x) (__per_cpu_offset(x))
  18
  19 /* var is in discarded region: offset to particular copy we want */
  20 #define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
  21 #define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
  22 #define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
  23
  24 /* A macro to avoid #include hell... */
  25 #define percpu_modcopy(pcpudst, src, size)                      \
  26 do {                                                            \
  27         unsigned int __i;                                       \
  28         for_each_possible_cpu(__i)                              \
  29                 memcpy((pcpudst)+__per_cpu_offset(__i),         \
  30                        (src), (size));                          \
  31 } while (0)
  32 #else /* ! SMP */
  33
  34 #define real_setup_per_cpu_areas()              do { } while (0)
  35
  36 #define per_cpu(var, cpu)                       (*((void)cpu, &per_cpu__##var))
  37 #define __get_cpu_var(var)                      per_cpu__##var
  38 #define __raw_get_cpu_var(var)                  per_cpu__##var
  39
  40 #endif  /* SMP */
  41
  42 #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
  43
  44 #endif /* __ARCH_SPARC64_PERCPU__ */