diff options
Diffstat (limited to 'platform/sysroot/usr/include/linux/ioprio.h')
| -rw-r--r-- | platform/sysroot/usr/include/linux/ioprio.h | 66 |
1 files changed, 41 insertions, 25 deletions
diff --git a/platform/sysroot/usr/include/linux/ioprio.h b/platform/sysroot/usr/include/linux/ioprio.h index 7a90d8792..2b6a8424b 100644 --- a/platform/sysroot/usr/include/linux/ioprio.h +++ b/platform/sysroot/usr/include/linux/ioprio.h @@ -1,36 +1,30 @@ -/**************************************************************************** - **************************************************************************** - *** - *** This header was automatically generated from a Linux kernel header - *** of the same name, to make information necessary for userspace to - *** call into the kernel available to libc. It contains only constants, - *** structures, and macros generated from the original header, and thus, - *** contains no copyrightable information. - *** - *** To edit the content of this header, modify the corresponding - *** source file (e.g. under external/kernel-headers/original/) then - *** run bionic/libc/kernel/tools/update_all.py - *** - *** Any manual change here will be lost the next time this script will - *** be run. You've been warned! - *** - **************************************************************************** - ****************************************************************************/ +/* + * This file is auto-generated. Modifications will be lost. + * + * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/ + * for more information. + */ #ifndef _UAPI_LINUX_IOPRIO_H #define _UAPI_LINUX_IOPRIO_H +#include <linux/stddef.h> +#include <linux/types.h> #define IOPRIO_CLASS_SHIFT 13 -#define IOPRIO_CLASS_MASK 0x07 +#define IOPRIO_NR_CLASSES 8 +#define IOPRIO_CLASS_MASK (IOPRIO_NR_CLASSES - 1) #define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1) #define IOPRIO_PRIO_CLASS(ioprio) (((ioprio) >> IOPRIO_CLASS_SHIFT) & IOPRIO_CLASS_MASK) #define IOPRIO_PRIO_DATA(ioprio) ((ioprio) & IOPRIO_PRIO_MASK) -#define IOPRIO_PRIO_VALUE(class,data) ((((class) & IOPRIO_CLASS_MASK) << IOPRIO_CLASS_SHIFT) | ((data) & IOPRIO_PRIO_MASK)) enum { - IOPRIO_CLASS_NONE, - IOPRIO_CLASS_RT, - IOPRIO_CLASS_BE, - IOPRIO_CLASS_IDLE, + IOPRIO_CLASS_NONE = 0, + IOPRIO_CLASS_RT = 1, + IOPRIO_CLASS_BE = 2, + IOPRIO_CLASS_IDLE = 3, + IOPRIO_CLASS_INVALID = 7, }; -#define IOPRIO_NR_LEVELS 8 +#define IOPRIO_LEVEL_NR_BITS 3 +#define IOPRIO_NR_LEVELS (1 << IOPRIO_LEVEL_NR_BITS) +#define IOPRIO_LEVEL_MASK (IOPRIO_NR_LEVELS - 1) +#define IOPRIO_PRIO_LEVEL(ioprio) ((ioprio) & IOPRIO_LEVEL_MASK) #define IOPRIO_BE_NR IOPRIO_NR_LEVELS enum { IOPRIO_WHO_PROCESS = 1, @@ -39,4 +33,26 @@ enum { }; #define IOPRIO_NORM 4 #define IOPRIO_BE_NORM IOPRIO_NORM +#define IOPRIO_HINT_SHIFT IOPRIO_LEVEL_NR_BITS +#define IOPRIO_HINT_NR_BITS 10 +#define IOPRIO_NR_HINTS (1 << IOPRIO_HINT_NR_BITS) +#define IOPRIO_HINT_MASK (IOPRIO_NR_HINTS - 1) +#define IOPRIO_PRIO_HINT(ioprio) (((ioprio) >> IOPRIO_HINT_SHIFT) & IOPRIO_HINT_MASK) +enum { + IOPRIO_HINT_NONE = 0, + IOPRIO_HINT_DEV_DURATION_LIMIT_1 = 1, + IOPRIO_HINT_DEV_DURATION_LIMIT_2 = 2, + IOPRIO_HINT_DEV_DURATION_LIMIT_3 = 3, + IOPRIO_HINT_DEV_DURATION_LIMIT_4 = 4, + IOPRIO_HINT_DEV_DURATION_LIMIT_5 = 5, + IOPRIO_HINT_DEV_DURATION_LIMIT_6 = 6, + IOPRIO_HINT_DEV_DURATION_LIMIT_7 = 7, +}; +#define IOPRIO_BAD_VALUE(val,max) ((val) < 0 || (val) >= (max)) +static __always_inline __u16 ioprio_value(int prioclass, int priolevel, int priohint) { + if(IOPRIO_BAD_VALUE(prioclass, IOPRIO_NR_CLASSES) || IOPRIO_BAD_VALUE(priolevel, IOPRIO_NR_LEVELS) || IOPRIO_BAD_VALUE(priohint, IOPRIO_NR_HINTS)) return IOPRIO_CLASS_INVALID << IOPRIO_CLASS_SHIFT; + return(prioclass << IOPRIO_CLASS_SHIFT) | (priohint << IOPRIO_HINT_SHIFT) | priolevel; +} +#define IOPRIO_PRIO_VALUE(prioclass,priolevel) ioprio_value(prioclass, priolevel, IOPRIO_HINT_NONE) +#define IOPRIO_PRIO_VALUE_HINT(prioclass,priolevel,priohint) ioprio_value(prioclass, priolevel, priohint) #endif |