LXR linux/kernel/sched

   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
  14struct cpupri_vec {
  15        raw_spinlock_t lock;
  16        int        count;
  17        cpumask_var_t mask;
  18};
  19
  20struct 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
  27int  cpupri_find(struct cpupri *cp,
  28                 struct task_struct *p, struct cpumask *lowest_mask);
  29void cpupri_set(struct cpupri *cp, int cpu, int pri);
  30int cpupri_init(struct cpupri *cp);
  31void 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 */
  38