| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 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 | |
| 8 | #ifdef CONFIG_NO_HZ_FULL |
| Frederic Weisbecker | 7e56a1c | 2017-10-27 04:42:31 +0200 | [diff] [blame^] | 9 | extern int housekeeping_any_cpu(void); |
| 10 | extern const struct cpumask *housekeeping_cpumask(void); |
| 11 | extern void housekeeping_affine(struct task_struct *t); |
| 12 | extern bool housekeeping_test_cpu(int cpu); |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 13 | extern void __init housekeeping_init(void); |
| Frederic Weisbecker | 7e56a1c | 2017-10-27 04:42:31 +0200 | [diff] [blame^] | 14 | |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 15 | #else |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 16 | |
| Frederic Weisbecker | 9f0ca2d | 2017-10-27 04:42:30 +0200 | [diff] [blame] | 17 | static inline int housekeeping_any_cpu(void) |
| 18 | { |
| Frederic Weisbecker | 9f0ca2d | 2017-10-27 04:42:30 +0200 | [diff] [blame] | 19 | return smp_processor_id(); |
| 20 | } |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 21 | |
| 22 | static inline const struct cpumask *housekeeping_cpumask(void) |
| 23 | { |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 24 | return cpu_possible_mask; |
| 25 | } |
| 26 | |
| Frederic Weisbecker | 7e56a1c | 2017-10-27 04:42:31 +0200 | [diff] [blame^] | 27 | static inline void housekeeping_affine(struct task_struct *t) { } |
| 28 | static inline void housekeeping_init(void) { } |
| 29 | #endif /* CONFIG_NO_HZ_FULL */ |
| 30 | |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 31 | static inline bool is_housekeeping_cpu(int cpu) |
| 32 | { |
| 33 | #ifdef CONFIG_NO_HZ_FULL |
| 34 | if (tick_nohz_full_enabled()) |
| Frederic Weisbecker | 7e56a1c | 2017-10-27 04:42:31 +0200 | [diff] [blame^] | 35 | return housekeeping_test_cpu(cpu); |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 36 | #endif |
| 37 | return true; |
| 38 | } |
| 39 | |
| Frederic Weisbecker | 7863406 | 2017-10-27 04:42:28 +0200 | [diff] [blame] | 40 | #endif /* _LINUX_SCHED_ISOLATION_H */ |