include/asm-mips64/timex.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1998, 1999, 2003 by Ralf Baechle
   7  */
   8 #ifndef _ASM_TIMEX_H
   9 #define _ASM_TIMEX_H
  10
  11 #include <asm/mipsregs.h>
  12
  13 /*
  14  * Standard way to access the cycle counter.
  15  * Currently only used on SMP for scheduling.
  16  *
  17  * Only the low 32 bits are available as a continuously counting entity.
  18  * But this only means we'll force a reschedule every 8 seconds or so,
  19  * which isn't an evil thing.
  20  *
  21  * We know that all SMP capable CPUs have cycle counters.
  22  */
  23
  24 typedef unsigned int cycles_t;
  25 extern cycles_t cacheflush_time;
  26
  27 static inline cycles_t get_cycles (void)
  28 {
  29         return read_c0_count();
  30 }
  31
  32 #endif /*  _ASM_TIMEX_H */