1*78634061SFrederic Weisbecker #ifndef _LINUX_SCHED_ISOLATION_H 2*78634061SFrederic Weisbecker #define _LINUX_SCHED_ISOLATION_H 3*78634061SFrederic Weisbecker 4*78634061SFrederic Weisbecker #include <linux/cpumask.h> 5*78634061SFrederic Weisbecker #include <linux/init.h> 6*78634061SFrederic Weisbecker #include <linux/tick.h> 7*78634061SFrederic Weisbecker 8*78634061SFrederic Weisbecker #ifdef CONFIG_NO_HZ_FULL 9*78634061SFrederic Weisbecker extern cpumask_var_t housekeeping_mask; 10*78634061SFrederic Weisbecker 11*78634061SFrederic Weisbecker static inline int housekeeping_any_cpu(void) 12*78634061SFrederic Weisbecker { 13*78634061SFrederic Weisbecker return cpumask_any_and(housekeeping_mask, cpu_online_mask); 14*78634061SFrederic Weisbecker } 15*78634061SFrederic Weisbecker 16*78634061SFrederic Weisbecker extern void __init housekeeping_init(void); 17*78634061SFrederic Weisbecker 18*78634061SFrederic Weisbecker #else 19*78634061SFrederic Weisbecker 20*78634061SFrederic Weisbecker static inline int housekeeping_any_cpu(void) 21*78634061SFrederic Weisbecker { 22*78634061SFrederic Weisbecker return smp_processor_id(); 23*78634061SFrederic Weisbecker } 24*78634061SFrederic Weisbecker 25*78634061SFrederic Weisbecker static inline void housekeeping_init(void) { } 26*78634061SFrederic Weisbecker #endif /* CONFIG_NO_HZ_FULL */ 27*78634061SFrederic Weisbecker 28*78634061SFrederic Weisbecker 29*78634061SFrederic Weisbecker static inline const struct cpumask *housekeeping_cpumask(void) 30*78634061SFrederic Weisbecker { 31*78634061SFrederic Weisbecker #ifdef CONFIG_NO_HZ_FULL 32*78634061SFrederic Weisbecker if (tick_nohz_full_enabled()) 33*78634061SFrederic Weisbecker return housekeeping_mask; 34*78634061SFrederic Weisbecker #endif 35*78634061SFrederic Weisbecker return cpu_possible_mask; 36*78634061SFrederic Weisbecker } 37*78634061SFrederic Weisbecker 38*78634061SFrederic Weisbecker static inline bool is_housekeeping_cpu(int cpu) 39*78634061SFrederic Weisbecker { 40*78634061SFrederic Weisbecker #ifdef CONFIG_NO_HZ_FULL 41*78634061SFrederic Weisbecker if (tick_nohz_full_enabled()) 42*78634061SFrederic Weisbecker return cpumask_test_cpu(cpu, housekeeping_mask); 43*78634061SFrederic Weisbecker #endif 44*78634061SFrederic Weisbecker return true; 45*78634061SFrederic Weisbecker } 46*78634061SFrederic Weisbecker 47*78634061SFrederic Weisbecker static inline void housekeeping_affine(struct task_struct *t) 48*78634061SFrederic Weisbecker { 49*78634061SFrederic Weisbecker #ifdef CONFIG_NO_HZ_FULL 50*78634061SFrederic Weisbecker if (tick_nohz_full_enabled()) 51*78634061SFrederic Weisbecker set_cpus_allowed_ptr(t, housekeeping_mask); 52*78634061SFrederic Weisbecker 53*78634061SFrederic Weisbecker #endif 54*78634061SFrederic Weisbecker } 55*78634061SFrederic Weisbecker 56*78634061SFrederic Weisbecker #endif /* _LINUX_SCHED_ISOLATION_H */ 57