1 /* 2 * SYS/IOSCHED.H 3 * 4 * I/O Scheduler 5 * 6 * $DragonFly: src/sys/sys/iosched.h,v 1.1 2008/06/28 17:59:47 dillon Exp $ 7 */ 8 9 #ifndef _SYS_IOSCHED_H_ 10 #define _SYS_IOSCHED_H_ 11 12 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 13 14 #ifndef _SYS_TYPES_H_ 15 #include <sys/types.h> 16 #endif 17 #ifndef _SYS_QUEUE_H_ 18 #include <sys/queue.h> 19 #endif 20 #ifndef _SYS_SYSTIMER_H_ 21 #include <sys/systimer.h> 22 #endif 23 24 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 25 26 struct iosched_data { 27 size_t iorbytes; 28 size_t iowbytes; 29 int lastticks; /* decay last recorded */ 30 }; 31 32 #ifdef _KERNEL 33 34 struct thread; 35 void bwillwrite(int bytes); 36 void bwillread(int bytes); 37 void bwillinode(int count); 38 void biosched_done(struct thread *td); 39 40 #endif 41 42 #endif 43 44