4 static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
5 unsigned int *ecx, unsigned int *edx)
7 asm volatile("xchgl %%ebx, %1\ncpuid\nxchgl %%ebx, %1"
8 : "=a" (*eax), "=r" (*ebx), "=c" (*ecx), "=d" (*edx)
13 #include "arch-x86-common.h" /* IWYU pragma: export */
15 #define FIO_ARCH (arch_x86)
17 #define FIO_HUGE_PAGE 4194304
19 #define nop __asm__ __volatile__("rep;nop": : :"memory")
20 #define read_barrier() __asm__ __volatile__("": : :"memory")
21 #define write_barrier() __asm__ __volatile__("": : :"memory")
23 static inline unsigned long arch_ffz(unsigned long bitmask)
25 __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
29 static inline unsigned long long get_cpu_clock(void)
31 unsigned long long ret;
33 __asm__ __volatile__("rdtsc" : "=A" (ret));
38 #define ARCH_HAVE_CPU_CLOCK