Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
8enum 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
19DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
20extern int housekeeping_any_cpu(enum hk_flags flags);
21extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
22extern bool housekeeping_enabled(enum hk_flags flags);
23extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
24extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
25extern void __init housekeeping_init(void);
26
27#else
28
29static inline int housekeeping_any_cpu(enum hk_flags flags)
30{
31 return smp_processor_id();
32}
33
34static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
35{
36 return cpu_possible_mask;
37}
38
39static inline bool housekeeping_enabled(enum hk_flags flags)
40{
41 return false;
42}
43
44static inline void housekeeping_affine(struct task_struct *t,
45 enum hk_flags flags) { }
46static inline void housekeeping_init(void) { }
47#endif /* CONFIG_CPU_ISOLATION */
48
49static 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 */