diff options
Diffstat (limited to 'include/linux/sched/prio.h')
| -rw-r--r-- | include/linux/sched/prio.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h new file mode 100644 index 000000000000..9382ba84d5d0 --- /dev/null +++ b/include/linux/sched/prio.h @@ -0,0 +1,23 @@ +#ifndef _SCHED_PRIO_H +#define _SCHED_PRIO_H + +/* + * 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. + * + * The MAX_USER_RT_PRIO value allows the actual maximum + * RT priority to be separate from the value exported to + * user-space. This allows kernel threads to set their + * priority to a value higher than any user task. Note: + * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO. + */ + +#define MAX_USER_RT_PRIO 100 +#define MAX_RT_PRIO MAX_USER_RT_PRIO + +#define MAX_PRIO (MAX_RT_PRIO + 40) +#define DEFAULT_PRIO (MAX_RT_PRIO + 20) + +#endif /* _SCHED_PRIO_H */ |