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   1 #ifdef CONFIG_SMP
   2         .macro LOCK_PREFIX
   3 1:      lock
   4         .section .smp_locks,"a"
   5         .align 8
   6         .quad 1b
   7         .previous
   8         .endm
   9 #else
  10         .macro LOCK_PREFIX
  11         .endm
  12 #endif