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