4 static int arch = arch_x86_64;
6 #ifndef __NR_ioprio_set
7 #define __NR_ioprio_set 251
8 #define __NR_ioprio_get 252
11 #ifndef __NR_fadvise64
12 #define __NR_fadvise64 221
15 #define nop __asm__ __volatile__("rep;nop": : :"memory")
17 static inline unsigned long ffz(unsigned long bitmask)
19 __asm__("bsfq %1,%0" :"=r" (bitmask) :"r" (~bitmask));