1*4882a593Smuzhiyun #ifndef _LINUX_SCHED_ISOLATION_H
2*4882a593Smuzhiyun #define _LINUX_SCHED_ISOLATION_H
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #include <linux/cpumask.h>
5*4882a593Smuzhiyun #include <linux/init.h>
6*4882a593Smuzhiyun #include <linux/tick.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun enum hk_flags {
9*4882a593Smuzhiyun HK_FLAG_TIMER = 1,
10*4882a593Smuzhiyun HK_FLAG_RCU = (1 << 1),
11*4882a593Smuzhiyun HK_FLAG_MISC = (1 << 2),
12*4882a593Smuzhiyun HK_FLAG_SCHED = (1 << 3),
13*4882a593Smuzhiyun HK_FLAG_TICK = (1 << 4),
14*4882a593Smuzhiyun HK_FLAG_DOMAIN = (1 << 5),
15*4882a593Smuzhiyun HK_FLAG_WQ = (1 << 6),
16*4882a593Smuzhiyun HK_FLAG_MANAGED_IRQ = (1 << 7),
17*4882a593Smuzhiyun HK_FLAG_KTHREAD = (1 << 8),
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #ifdef CONFIG_CPU_ISOLATION
21*4882a593Smuzhiyun DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
22*4882a593Smuzhiyun extern int housekeeping_any_cpu(enum hk_flags flags);
23*4882a593Smuzhiyun extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
24*4882a593Smuzhiyun extern bool housekeeping_enabled(enum hk_flags flags);
25*4882a593Smuzhiyun extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
26*4882a593Smuzhiyun extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
27*4882a593Smuzhiyun extern void __init housekeeping_init(void);
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun #else
30*4882a593Smuzhiyun
housekeeping_any_cpu(enum hk_flags flags)31*4882a593Smuzhiyun static inline int housekeeping_any_cpu(enum hk_flags flags)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun return smp_processor_id();
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
housekeeping_cpumask(enum hk_flags flags)36*4882a593Smuzhiyun static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun return cpu_possible_mask;
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
housekeeping_enabled(enum hk_flags flags)41*4882a593Smuzhiyun static inline bool housekeeping_enabled(enum hk_flags flags)
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun return false;
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
housekeeping_affine(struct task_struct * t,enum hk_flags flags)46*4882a593Smuzhiyun static inline void housekeeping_affine(struct task_struct *t,
47*4882a593Smuzhiyun enum hk_flags flags) { }
housekeeping_init(void)48*4882a593Smuzhiyun static inline void housekeeping_init(void) { }
49*4882a593Smuzhiyun #endif /* CONFIG_CPU_ISOLATION */
50*4882a593Smuzhiyun
housekeeping_cpu(int cpu,enum hk_flags flags)51*4882a593Smuzhiyun static inline bool housekeeping_cpu(int cpu, enum hk_flags flags)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun #ifdef CONFIG_CPU_ISOLATION
54*4882a593Smuzhiyun if (static_branch_unlikely(&housekeeping_overridden))
55*4882a593Smuzhiyun return housekeeping_test_cpu(cpu, flags);
56*4882a593Smuzhiyun #endif
57*4882a593Smuzhiyun return true;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun #endif /* _LINUX_SCHED_ISOLATION_H */
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