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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647/* 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_DL_PRIO 0
#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 */