cpupri.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#include <linux/atomic.h>
 3#include <linux/cpumask.h>
 4#include <linux/sched/rt.h>
 5
 6#define CPUPRI_NR_PRIORITIES	(MAX_RT_PRIO+1)
 7
 8#define CPUPRI_INVALID		-1
 9#define CPUPRI_NORMAL		 0
10/* values 1-99 are for RT1-RT99 priorities */
11#define CPUPRI_HIGHER		100
12
13struct cpupri_vec {
14	atomic_t		count;
15	cpumask_var_t		mask;
16};
17
18struct cpupri {
19	struct cpupri_vec	pri_to_cpu[CPUPRI_NR_PRIORITIES];
20	int			*cpu_to_pri;
21};
22
23int  cpupri_find(struct cpupri *cp, struct task_struct *p,
24		 struct cpumask *lowest_mask);
25int  cpupri_find_fitness(struct cpupri *cp, struct task_struct *p,
26			 struct cpumask *lowest_mask,
27			 bool (*fitness_fn)(struct task_struct *p, int cpu));
28void cpupri_set(struct cpupri *cp, int cpu, int pri);
29int  cpupri_init(struct cpupri *cp);
30void cpupri_cleanup(struct cpupri *cp);