mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 22:57:27 +07:00
9ccd27cc2e
Make each header self-sufficient, so that it can be built successfully both in an allnoconfig and allyesconfig kernel. Also standardize the naming of their header guards. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
#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.
|
|
*
|
|
* 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 + 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)
|
|
|
|
/*
|
|
* 'User priority' is the nice value converted to something we
|
|
* can work with better when scaling various scheduler parameters,
|
|
* it's a [ 0 ... 39 ] range.
|
|
*/
|
|
#define USER_PRIO(p) ((p)-MAX_RT_PRIO)
|
|
#define TASK_USER_PRIO(p) USER_PRIO((p)->static_prio)
|
|
#define MAX_USER_PRIO (USER_PRIO(MAX_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 */
|