arch/arch-ia64.h

   1 #ifndef ARCH_IA64_H
   2 #define ARCH_IA64_H
   3
   4 #define FIO_ARCH        (arch_ia64)
   5
   6 #define nop             asm volatile ("hint @pause" ::: "memory");
   7 #define read_barrier()  asm volatile ("mf" ::: "memory")
   8 #define write_barrier() asm volatile ("mf" ::: "memory")
   9
  10 #define ia64_popcnt(x)                                                  \
  11 ({                                                                      \
  12         unsigned long ia64_intri_res;                                   \
  13         asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x));         \
  14         ia64_intri_res;                                                 \
  15 })
  16
  17 static inline unsigned long arch_ffz(unsigned long bitmask)
  18 {
  19         return ia64_popcnt(bitmask & (~bitmask - 1));
  20 }
  21
  22 static inline unsigned long long get_cpu_clock(void)
  23 {
  24         unsigned long long ret;
  25
  26         __asm__ __volatile__("mov %0=ar.itc" : "=r" (ret) : : "memory");
  27         return ret;
  28 }
  29
  30 #define ARCH_HAVE_INIT
  31 extern bool tsc_reliable;
  32 static inline int arch_init(char *envp[])
  33 {
  34         tsc_reliable = true;
  35         return 0;
  36 }
  37
  38 #define ARCH_HAVE_FFZ
  39 #define ARCH_HAVE_CPU_CLOCK
  40
  41 #endif