Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Frédéric Weisbecker |
203 |
65.91% |
13 |
54.17% |
| Paul E. McKenney |
23 |
7.47% |
1 |
4.17% |
| Waiman Long |
21 |
6.82% |
1 |
4.17% |
| Chris Metcalf |
20 |
6.49% |
2 |
8.33% |
| Wanpeng Li |
19 |
6.17% |
1 |
4.17% |
| Vatika Harlalka |
10 |
3.25% |
1 |
4.17% |
| Peter Zijlstra |
4 |
1.30% |
1 |
4.17% |
| Linus Torvalds (pre-git) |
3 |
0.97% |
1 |
4.17% |
| Marcelo Tosatti |
2 |
0.65% |
1 |
4.17% |
| Ingo Molnar |
2 |
0.65% |
1 |
4.17% |
| Gregory Haskins |
1 |
0.32% |
1 |
4.17% |
| Total |
308 |
|
24 |
|
#ifndef _LINUX_SCHED_ISOLATION_H
#define _LINUX_SCHED_ISOLATION_H
#include <linux/cpumask.h>
#include <linux/init.h>
#include <linux/tick.h>
enum hk_type {
/* Inverse of boot-time isolcpus= argument */
HK_TYPE_DOMAIN_BOOT,
/*
* Same as HK_TYPE_DOMAIN_BOOT but also includes the
* inverse of cpuset isolated partitions. As such it
* is always a subset of HK_TYPE_DOMAIN_BOOT.
*/
HK_TYPE_DOMAIN,
/* Inverse of boot-time isolcpus=managed_irq argument */
HK_TYPE_MANAGED_IRQ,
/* Inverse of boot-time nohz_full= or isolcpus=nohz arguments */
HK_TYPE_KERNEL_NOISE,
HK_TYPE_MAX,
/*
* The following housekeeping types are only set by the nohz_full
* boot commandline option. So they can share the same value.
*/
HK_TYPE_TICK = HK_TYPE_KERNEL_NOISE,
HK_TYPE_TIMER = HK_TYPE_KERNEL_NOISE,
HK_TYPE_RCU = HK_TYPE_KERNEL_NOISE,
HK_TYPE_MISC = HK_TYPE_KERNEL_NOISE,
HK_TYPE_WQ = HK_TYPE_KERNEL_NOISE,
HK_TYPE_KTHREAD = HK_TYPE_KERNEL_NOISE
};
#ifdef CONFIG_CPU_ISOLATION
DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
extern int housekeeping_any_cpu(enum hk_type type);
extern const struct cpumask *housekeeping_cpumask(enum hk_type type);
extern bool housekeeping_enabled(enum hk_type type);
extern void housekeeping_affine(struct task_struct *t, enum hk_type type);
extern bool housekeeping_test_cpu(int cpu, enum hk_type type);
extern int housekeeping_update(struct cpumask *isol_mask);
extern void __init housekeeping_init(void);
#else
static inline int housekeeping_any_cpu(enum hk_type type)
{
return smp_processor_id();
}
static inline const struct cpumask *housekeeping_cpumask(enum hk_type type)
{
return cpu_possible_mask;
}
static inline bool housekeeping_enabled(enum hk_type type)
{
return false;
}
static inline void housekeeping_affine(struct task_struct *t,
enum hk_type type) { }
static inline bool housekeeping_test_cpu(int cpu, enum hk_type type)
{
return true;
}
static inline int housekeeping_update(struct cpumask *isol_mask) { return 0; }
static inline void housekeeping_init(void) { }
#endif /* CONFIG_CPU_ISOLATION */
static inline bool housekeeping_cpu(int cpu, enum hk_type type)
{
#ifdef CONFIG_CPU_ISOLATION
if (static_branch_unlikely(&housekeeping_overridden))
return housekeeping_test_cpu(cpu, type);
#endif
return true;
}
static inline bool cpu_is_isolated(int cpu)
{
return !housekeeping_test_cpu(cpu, HK_TYPE_DOMAIN);
}
#endif /* _LINUX_SCHED_ISOLATION_H */