ndk/platforms/android-18/arch-arm/usr/include/linux/ioprio.h

   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  ****************************************************************************
  11  ****************************************************************************/
  12 #ifndef IOPRIO_H
  13 #define IOPRIO_H
  14
  15 #include <linux/sched.h>
  16
  17 #define IOPRIO_BITS (16)
  18 #define IOPRIO_CLASS_SHIFT (13)
  19 #define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1)
  20
  21 #define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
  22 #define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
  23 #define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data)
  24
  25 #define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE)
  26
  27 enum {
  28  IOPRIO_CLASS_NONE,
  29  IOPRIO_CLASS_RT,
  30  IOPRIO_CLASS_BE,
  31  IOPRIO_CLASS_IDLE,
  32 };
  33
  34 #define IOPRIO_BE_NR (8)
  35
  36 enum {
  37  IOPRIO_WHO_PROCESS = 1,
  38  IOPRIO_WHO_PGRP,
  39  IOPRIO_WHO_USER,
  40 };
  41
  42 #define IOPRIO_NORM (4)
  43
  44 #endif