kernel/sched_cpupri.h

   1 #ifndef _LINUX_CPUPRI_H
   2 #define _LINUX_CPUPRI_H
   3
   4 #include <linux/sched.h>
   5
   6 #define CPUPRI_NR_PRIORITIES    (MAX_RT_PRIO + 2)
   7 #define CPUPRI_NR_PRI_WORDS     BITS_TO_LONGS(CPUPRI_NR_PRIORITIES)
   8
   9 #define CPUPRI_INVALID -1
  10 #define CPUPRI_IDLE     0
  11 #define CPUPRI_NORMAL   1
  12 /* values 2-101 are RT priorities 0-99 */
  13
  14 struct cpupri_vec {
  15         spinlock_t lock;
  16         int        count;
  17         cpumask_var_t mask;
  18 };
  19
  20 struct cpupri {
  21         struct cpupri_vec pri_to_cpu[CPUPRI_NR_PRIORITIES];
  22         long              pri_active[CPUPRI_NR_PRI_WORDS];
  23         int               cpu_to_pri[NR_CPUS];
  24 };
  25
  26 #ifdef CONFIG_SMP
  27 int  cpupri_find(struct cpupri *cp,
  28                  struct task_struct *p, cpumask_t *lowest_mask);
  29 void cpupri_set(struct cpupri *cp, int cpu, int pri);
  30 int cpupri_init(struct cpupri *cp, bool bootmem);
  31 void cpupri_cleanup(struct cpupri *cp);
  32 #else
  33 #define cpupri_set(cp, cpu, pri) do { } while (0)
  34 #define cpupri_init() do { } while (0)
  35 #endif
  36
  37 #endif /* _LINUX_CPUPRI_H */