include/asm-ia64/cache.h

   1 #ifndef _ASM_IA64_CACHE_H
   2 #define _ASM_IA64_CACHE_H
   3
   4 #include <linux/config.h>
   5
   6 /*
   7  * Copyright (C) 1998-2000 Hewlett-Packard Co
   8  *      David Mosberger-Tang <davidm@hpl.hp.com>
   9  */
  10
  11 /* Bytes per L1 (data) cache line.  */
  12 #define L1_CACHE_SHIFT          CONFIG_IA64_L1_CACHE_SHIFT
  13 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
  14
  15 #define L1_CACHE_SHIFT_MAX 7    /* largest L1 which this arch supports */
  16
  17 #ifdef CONFIG_SMP
  18 # define SMP_CACHE_SHIFT        L1_CACHE_SHIFT
  19 # define SMP_CACHE_BYTES        L1_CACHE_BYTES
  20 #else
  21   /*
  22    * The "aligned" directive can only _increase_ alignment, so this is
  23    * safe and provides an easy way to avoid wasting space on a
  24    * uni-processor:
  25    */
  26 # define SMP_CACHE_SHIFT        3
  27 # define SMP_CACHE_BYTES        (1 << 3)
  28 #endif
  29
  30 #endif /* _ASM_IA64_CACHE_H */