diff options
Diffstat (limited to 'kernel/sched/cpupri.h')
| -rw-r--r-- | kernel/sched/cpupri.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/kernel/sched/cpupri.h b/kernel/sched/cpupri.h new file mode 100644 index 000000000..d6cba0020 --- /dev/null +++ b/kernel/sched/cpupri.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#define CPUPRI_NR_PRIORITIES (MAX_RT_PRIO+1) + +#define CPUPRI_INVALID -1 +#define CPUPRI_NORMAL 0 +/* values 1-99 are for RT1-RT99 priorities */ +#define CPUPRI_HIGHER 100 + +struct cpupri_vec { + atomic_t count; + cpumask_var_t mask; +}; + +struct cpupri { + struct cpupri_vec pri_to_cpu[CPUPRI_NR_PRIORITIES]; + int *cpu_to_pri; +}; + +#ifdef CONFIG_SMP +int cpupri_find(struct cpupri *cp, struct task_struct *p, + struct cpumask *lowest_mask); +int cpupri_find_fitness(struct cpupri *cp, struct task_struct *p, + struct cpumask *lowest_mask, + bool (*fitness_fn)(struct task_struct *p, int cpu)); +void cpupri_set(struct cpupri *cp, int cpu, int pri); +int cpupri_init(struct cpupri *cp); +void cpupri_cleanup(struct cpupri *cp); +#endif |