kernel/sched/cpupri.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #define CPUPRI_NR_PRIORITIES    (MAX_RT_PRIO + 2)
   4
   5 #define CPUPRI_INVALID          -1
   6 #define CPUPRI_IDLE              0
   7 #define CPUPRI_NORMAL            1
   8 /* values 2-101 are RT priorities 0-99 */
   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