mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.1 KiB
45 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef _LINUX_SCHED_PRIO_H |
|
#define _LINUX_SCHED_PRIO_H |
|
|
|
#define MAX_NICE 19 |
|
#define MIN_NICE -20 |
|
#define NICE_WIDTH (MAX_NICE - MIN_NICE + 1) |
|
|
|
/* |
|
* Priority of a process goes from 0..MAX_PRIO-1, valid RT |
|
* priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH |
|
* tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority |
|
* values are inverted: lower p->prio value means higher priority. |
|
*/ |
|
|
|
#define MAX_RT_PRIO 100 |
|
|
|
#define MAX_PRIO (MAX_RT_PRIO + NICE_WIDTH) |
|
#define DEFAULT_PRIO (MAX_RT_PRIO + NICE_WIDTH / 2) |
|
|
|
/* |
|
* Convert user-nice values [ -20 ... 0 ... 19 ] |
|
* to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ], |
|
* and back. |
|
*/ |
|
#define NICE_TO_PRIO(nice) ((nice) + DEFAULT_PRIO) |
|
#define PRIO_TO_NICE(prio) ((prio) - DEFAULT_PRIO) |
|
|
|
/* |
|
* Convert nice value [19,-20] to rlimit style value [1,40]. |
|
*/ |
|
static inline long nice_to_rlimit(long nice) |
|
{ |
|
return (MAX_NICE - nice + 1); |
|
} |
|
|
|
/* |
|
* Convert rlimit style value [1,40] to nice value [-20, 19]. |
|
*/ |
|
static inline long rlimit_to_nice(long prio) |
|
{ |
|
return (MAX_NICE - prio + 1); |
|
} |
|
|
|
#endif /* _LINUX_SCHED_PRIO_H */
|
|
|