1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _UAPI_LINUX_IOPRIO_H 20 #define _UAPI_LINUX_IOPRIO_H 21 #define IOPRIO_CLASS_SHIFT 13 22 #define IOPRIO_CLASS_MASK 0x07 23 #define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1) 24 #define IOPRIO_PRIO_CLASS(ioprio) (((ioprio) >> IOPRIO_CLASS_SHIFT) & IOPRIO_CLASS_MASK) 25 #define IOPRIO_PRIO_DATA(ioprio) ((ioprio) & IOPRIO_PRIO_MASK) 26 #define IOPRIO_PRIO_VALUE(class,data) ((((class) & IOPRIO_CLASS_MASK) << IOPRIO_CLASS_SHIFT) | ((data) & IOPRIO_PRIO_MASK)) 27 enum { 28 IOPRIO_CLASS_NONE, 29 IOPRIO_CLASS_RT, 30 IOPRIO_CLASS_BE, 31 IOPRIO_CLASS_IDLE, 32 }; 33 #define IOPRIO_NR_LEVELS 8 34 #define IOPRIO_BE_NR IOPRIO_NR_LEVELS 35 enum { 36 IOPRIO_WHO_PROCESS = 1, 37 IOPRIO_WHO_PGRP, 38 IOPRIO_WHO_USER, 39 }; 40 #define IOPRIO_NORM 4 41 #define IOPRIO_BE_NORM IOPRIO_NORM 42 #endif 43