178634061SFrederic Weisbecker #ifndef _LINUX_SCHED_ISOLATION_H 278634061SFrederic Weisbecker #define _LINUX_SCHED_ISOLATION_H 378634061SFrederic Weisbecker 478634061SFrederic Weisbecker #include <linux/cpumask.h> 578634061SFrederic Weisbecker #include <linux/init.h> 678634061SFrederic Weisbecker #include <linux/tick.h> 778634061SFrederic Weisbecker 8de201559SFrederic Weisbecker enum hk_flags { 9de201559SFrederic Weisbecker HK_FLAG_TIMER = 1, 10de201559SFrederic Weisbecker HK_FLAG_RCU = (1 << 1), 11de201559SFrederic Weisbecker HK_FLAG_MISC = (1 << 2), 12de201559SFrederic Weisbecker HK_FLAG_SCHED = (1 << 3), 136f1982feSFrederic Weisbecker HK_FLAG_TICK = (1 << 4), 14edb93821SFrederic Weisbecker HK_FLAG_DOMAIN = (1 << 5), 151bda3f80SFrederic Weisbecker HK_FLAG_WQ = (1 << 6), 16de201559SFrederic Weisbecker }; 17de201559SFrederic Weisbecker 185c4991e2SFrederic Weisbecker #ifdef CONFIG_CPU_ISOLATION 19*dfcb245eSIngo Molnar DECLARE_STATIC_KEY_FALSE(housekeeping_overridden); 20de201559SFrederic Weisbecker extern int housekeeping_any_cpu(enum hk_flags flags); 21de201559SFrederic Weisbecker extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags); 22de201559SFrederic Weisbecker extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags); 23de201559SFrederic Weisbecker extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags); 2478634061SFrederic Weisbecker extern void __init housekeeping_init(void); 257e56a1cfSFrederic Weisbecker 2678634061SFrederic Weisbecker #else 2778634061SFrederic Weisbecker 28de201559SFrederic Weisbecker static inline int housekeeping_any_cpu(enum hk_flags flags) 299f0ca2d9SFrederic Weisbecker { 309f0ca2d9SFrederic Weisbecker return smp_processor_id(); 319f0ca2d9SFrederic Weisbecker } 3278634061SFrederic Weisbecker 33de201559SFrederic Weisbecker static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags) 3478634061SFrederic Weisbecker { 3578634061SFrederic Weisbecker return cpu_possible_mask; 3678634061SFrederic Weisbecker } 3778634061SFrederic Weisbecker 38de201559SFrederic Weisbecker static inline void housekeeping_affine(struct task_struct *t, 39de201559SFrederic Weisbecker enum hk_flags flags) { } 407e56a1cfSFrederic Weisbecker static inline void housekeeping_init(void) { } 415c4991e2SFrederic Weisbecker #endif /* CONFIG_CPU_ISOLATION */ 427e56a1cfSFrederic Weisbecker 43de201559SFrederic Weisbecker static inline bool housekeeping_cpu(int cpu, enum hk_flags flags) 4478634061SFrederic Weisbecker { 455c4991e2SFrederic Weisbecker #ifdef CONFIG_CPU_ISOLATION 46*dfcb245eSIngo Molnar if (static_branch_unlikely(&housekeeping_overridden)) 47de201559SFrederic Weisbecker return housekeeping_test_cpu(cpu, flags); 4878634061SFrederic Weisbecker #endif 4978634061SFrederic Weisbecker return true; 5078634061SFrederic Weisbecker } 5178634061SFrederic Weisbecker 5278634061SFrederic Weisbecker #endif /* _LINUX_SCHED_ISOLATION_H */ 53