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};
16
17#ifdef CONFIG_CPU_ISOLATION
18DECLARE_STATIC_KEY_FALSE(housekeeping_overriden);
19extern int housekeeping_any_cpu(enum hk_flags flags);
20extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
21extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
22extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
23extern void __init housekeeping_init(void);
24
25#else
26
27static inline int housekeeping_any_cpu(enum hk_flags flags)
28{
29 return smp_processor_id();
30}
31
32static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
33{
34 return cpu_possible_mask;
35}
36
37static inline void housekeeping_affine(struct task_struct *t,
38 enum hk_flags flags) { }
39static inline void housekeeping_init(void) { }
40#endif /* CONFIG_CPU_ISOLATION */
41
42static inline bool housekeeping_cpu(int cpu, enum hk_flags flags)
43{
44#ifdef CONFIG_CPU_ISOLATION
45 if (static_branch_unlikely(&housekeeping_overriden))
46 return housekeeping_test_cpu(cpu, flags);
47#endif
48 return true;
49}
50
51#endif /* _LINUX_SCHED_ISOLATION_H */