root/include/linux/sched/isolation.h

INCLUDED FROM

DEFINITIONS

1. housekeeping_any_cpu
2. housekeeping_cpumask
3. housekeeping_enabled
4. housekeeping_affine
5. housekeeping_init
6. housekeeping_cpu

   1 #ifndef _LINUX_SCHED_ISOLATION_H
   2 #define _LINUX_SCHED_ISOLATION_H
   3 
   4 #include <linux/cpumask.h>
   5 #include <linux/init.h>
   6 #include <linux/tick.h>
   7 
   8 enum hk_flags {
   9         HK_FLAG_TIMER           = 1,
  10         HK_FLAG_RCU             = (1 << 1),
  11         HK_FLAG_MISC            = (1 << 2),
  12         HK_FLAG_SCHED           = (1 << 3),
  13         HK_FLAG_TICK            = (1 << 4),
  14         HK_FLAG_DOMAIN          = (1 << 5),
  15         HK_FLAG_WQ              = (1 << 6),
  16 };
  17 
  18 #ifdef CONFIG_CPU_ISOLATION
  19 DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
  20 extern int housekeeping_any_cpu(enum hk_flags flags);
  21 extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
  22 extern bool housekeeping_enabled(enum hk_flags flags);
  23 extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
  24 extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
  25 extern void __init housekeeping_init(void);
  26 
  27 #else
  28 
  29 static inline int housekeeping_any_cpu(enum hk_flags flags)
  30 {
  31         return smp_processor_id();
  32 }
  33 
  34 static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
  35 {
  36         return cpu_possible_mask;
  37 }
  38 
  39 static inline bool housekeeping_enabled(enum hk_flags flags)
  40 {
  41         return false;
  42 }
  43 
  44 static inline void housekeeping_affine(struct task_struct *t,
  45                                        enum hk_flags flags) { }
  46 static inline void housekeeping_init(void) { }
  47 #endif /* CONFIG_CPU_ISOLATION */
  48 
  49 static inline bool housekeeping_cpu(int cpu, enum hk_flags flags)
  50 {
  51 #ifdef CONFIG_CPU_ISOLATION
  52         if (static_branch_unlikely(&housekeeping_overridden))
  53                 return housekeeping_test_cpu(cpu, flags);
  54 #endif
  55         return true;
  56 }
  57 
  58 #endif /* _LINUX_SCHED_ISOLATION_H */