include/asm-i386/percpu.h

   1 #ifndef __ARCH_I386_PERCPU__
   2 #define __ARCH_I386_PERCPU__
   3
   4 #ifndef __ASSEMBLY__
   5 #include <asm-generic/percpu.h>
   6 #else
   7
   8 /*
   9  * PER_CPU finds an address of a per-cpu variable.
  10  *
  11  * Args:
  12  *    var - variable name
  13  *    cpu - 32bit register containing the current CPU number
  14  *
  15  * The resulting address is stored in the "cpu" argument.
  16  *
  17  * Example:
  18  *    PER_CPU(cpu_gdt_descr, %ebx)
  19  */
  20 #ifdef CONFIG_SMP
  21 #define PER_CPU(var, cpu) \
  22         movl __per_cpu_offset(,cpu,4), cpu;     \
  23         addl $per_cpu__/**/var, cpu;
  24 #else /* ! SMP */
  25 #define PER_CPU(var, cpu) \
  26         movl $per_cpu__/**/var, cpu;
  27 #endif  /* SMP */
  28
  29 #endif /* !__ASSEMBLY__ */
  30
  31 #endif /* __ARCH_I386_PERCPU__ */