diff options
Diffstat (limited to 'include/linux/sched')
27 files changed, 113 insertions, 11 deletions
diff --git a/include/linux/sched/autogroup.h b/include/linux/sched/autogroup.h index 55cd496df884..704391cc1d20 100644 --- a/include/linux/sched/autogroup.h +++ b/include/linux/sched/autogroup.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_AUTOGROUP_H #define _LINUX_SCHED_AUTOGROUP_H diff --git a/include/linux/sched/clock.h b/include/linux/sched/clock.h index a55600ffdf4b..867d588314e0 100644 --- a/include/linux/sched/clock.h +++ b/include/linux/sched/clock.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_CLOCK_H #define _LINUX_SCHED_CLOCK_H diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h index 98ae0d05aa32..9c8847395b5e 100644 --- a/include/linux/sched/coredump.h +++ b/include/linux/sched/coredump.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_COREDUMP_H #define _LINUX_SCHED_COREDUMP_H diff --git a/include/linux/sched/cpufreq.h b/include/linux/sched/cpufreq.h index d2be2ccbb372..d1ad3d825561 100644 --- a/include/linux/sched/cpufreq.h +++ b/include/linux/sched/cpufreq.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_CPUFREQ_H #define _LINUX_SCHED_CPUFREQ_H diff --git a/include/linux/sched/cputime.h b/include/linux/sched/cputime.h index 4c5b9735c1ae..d0677f6739f6 100644 --- a/include/linux/sched/cputime.h +++ b/include/linux/sched/cputime.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_CPUTIME_H #define _LINUX_SCHED_CPUTIME_H diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h index 975be862e083..a5bc8728ead7 100644 --- a/include/linux/sched/deadline.h +++ b/include/linux/sched/deadline.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_DEADLINE_H #define _LINUX_SCHED_DEADLINE_H diff --git a/include/linux/sched/debug.h b/include/linux/sched/debug.h index 5d58d49e9f87..95fb9e025247 100644 --- a/include/linux/sched/debug.h +++ b/include/linux/sched/debug.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_DEBUG_H #define _LINUX_SCHED_DEBUG_H diff --git a/include/linux/sched/hotplug.h b/include/linux/sched/hotplug.h index 752ac7e628d7..9a62ffdd296f 100644 --- a/include/linux/sched/hotplug.h +++ b/include/linux/sched/hotplug.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_HOTPLUG_H #define _LINUX_SCHED_HOTPLUG_H diff --git a/include/linux/sched/idle.h b/include/linux/sched/idle.h index 5ca63ebad6b4..22873d276be6 100644 --- a/include/linux/sched/idle.h +++ b/include/linux/sched/idle.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_IDLE_H #define _LINUX_SCHED_IDLE_H diff --git a/include/linux/sched/init.h b/include/linux/sched/init.h index 127215045285..03542575fd33 100644 --- a/include/linux/sched/init.h +++ b/include/linux/sched/init.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_INIT_H #define _LINUX_SCHED_INIT_H diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h new file mode 100644 index 000000000000..d849431c8060 --- /dev/null +++ b/include/linux/sched/isolation.h @@ -0,0 +1,51 @@ +#ifndef _LINUX_SCHED_ISOLATION_H +#define _LINUX_SCHED_ISOLATION_H + +#include <linux/cpumask.h> +#include <linux/init.h> +#include <linux/tick.h> + +enum hk_flags { + HK_FLAG_TIMER = 1, + HK_FLAG_RCU = (1 << 1), + HK_FLAG_MISC = (1 << 2), + HK_FLAG_SCHED = (1 << 3), + HK_FLAG_TICK = (1 << 4), + HK_FLAG_DOMAIN = (1 << 5), +}; + +#ifdef CONFIG_CPU_ISOLATION +DECLARE_STATIC_KEY_FALSE(housekeeping_overriden); +extern int housekeeping_any_cpu(enum hk_flags flags); +extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags); +extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags); +extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags); +extern void __init housekeeping_init(void); + +#else + +static inline int housekeeping_any_cpu(enum hk_flags flags) +{ + return smp_processor_id(); +} + +static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags) +{ + return cpu_possible_mask; +} + +static inline void housekeeping_affine(struct task_struct *t, + enum hk_flags flags) { } +static inline void housekeeping_init(void) { } +#endif /* CONFIG_CPU_ISOLATION */ + +static inline bool housekeeping_cpu(int cpu, enum hk_flags flags) +{ +#ifdef CONFIG_CPU_ISOLATION + if (static_branch_unlikely(&housekeeping_overriden)) + return housekeeping_test_cpu(cpu, flags); +#endif + return true; +} + +#endif /* _LINUX_SCHED_ISOLATION_H */ diff --git a/include/linux/sched/jobctl.h b/include/linux/sched/jobctl.h index 016afa0fb3bb..98228bd48aee 100644 --- a/include/linux/sched/jobctl.h +++ b/include/linux/sched/jobctl.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_JOBCTL_H #define _LINUX_SCHED_JOBCTL_H diff --git a/include/linux/sched/loadavg.h b/include/linux/sched/loadavg.h index 4264bc6b2c27..80bc84ba5d2a 100644 --- a/include/linux/sched/loadavg.h +++ b/include/linux/sched/loadavg.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_LOADAVG_H #define _LINUX_SCHED_LOADAVG_H diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index 3a19c253bdb1..3d49b91b674d 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_MM_H #define _LINUX_SCHED_MM_H @@ -84,6 +85,12 @@ static inline bool mmget_not_zero(struct mm_struct *mm) /* mmput gets rid of the mappings and all user-space */ extern void mmput(struct mm_struct *); +#ifdef CONFIG_MMU +/* same as above but performs the slow path from the async context. Can + * be called from the atomic context as well + */ +void mmput_async(struct mm_struct *); +#endif /* Grab a reference to a task's mm, if it is not already going away */ extern struct mm_struct *get_task_mm(struct task_struct *task); @@ -205,4 +212,20 @@ static inline void memalloc_noreclaim_restore(unsigned int flags) current->flags = (current->flags & ~PF_MEMALLOC) | flags; } +#ifdef CONFIG_MEMBARRIER +enum { + MEMBARRIER_STATE_PRIVATE_EXPEDITED_READY = (1U << 0), + MEMBARRIER_STATE_SWITCH_MM = (1U << 1), +}; + +static inline void membarrier_execve(struct task_struct *t) +{ + atomic_set(&t->mm->membarrier_state, 0); +} +#else +static inline void membarrier_execve(struct task_struct *t) +{ +} +#endif + #endif /* _LINUX_SCHED_MM_H */ diff --git a/include/linux/sched/nohz.h b/include/linux/sched/nohz.h index 028d17b918a7..3d3a97d9399d 100644 --- a/include/linux/sched/nohz.h +++ b/include/linux/sched/nohz.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_NOHZ_H #define _LINUX_SCHED_NOHZ_H diff --git a/include/linux/sched/numa_balancing.h b/include/linux/sched/numa_balancing.h index 35d5fc77b4be..e7dd04a84ba8 100644 --- a/include/linux/sched/numa_balancing.h +++ b/include/linux/sched/numa_balancing.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_NUMA_BALANCING_H #define _LINUX_SCHED_NUMA_BALANCING_H diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h index 2cc450f6ec54..7d64feafc408 100644 --- a/include/linux/sched/prio.h +++ b/include/linux/sched/prio.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_PRIO_H #define _LINUX_SCHED_PRIO_H diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h index f93329aba31a..e5af028c08b4 100644 --- a/include/linux/sched/rt.h +++ b/include/linux/sched/rt.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_RT_H #define _LINUX_SCHED_RT_H @@ -17,6 +18,17 @@ static inline int rt_task(struct task_struct *p) return rt_prio(p->prio); } +static inline bool task_is_realtime(struct task_struct *tsk) +{ + int policy = tsk->policy; + + if (policy == SCHED_FIFO || policy == SCHED_RR) + return true; + if (policy == SCHED_DEADLINE) + return true; + return false; +} + #ifdef CONFIG_RT_MUTEXES /* * Must hold either p->pi_lock or task_rq(p)->lock. diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h index 2a0dd40b15db..0aa4548fb492 100644 --- a/include/linux/sched/signal.h +++ b/include/linux/sched/signal.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_SIGNAL_H #define _LINUX_SCHED_SIGNAL_H diff --git a/include/linux/sched/stat.h b/include/linux/sched/stat.h index 141b74c53fad..04f1321d14c4 100644 --- a/include/linux/sched/stat.h +++ b/include/linux/sched/stat.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_STAT_H #define _LINUX_SCHED_STAT_H diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index 0f5ecd4d298e..1c1a1512ec55 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_SYSCTL_H #define _LINUX_SCHED_SYSCTL_H @@ -37,9 +38,9 @@ extern unsigned int sysctl_numa_balancing_scan_period_max; extern unsigned int sysctl_numa_balancing_scan_size; #ifdef CONFIG_SCHED_DEBUG -extern unsigned int sysctl_sched_migration_cost; -extern unsigned int sysctl_sched_nr_migrate; -extern unsigned int sysctl_sched_time_avg; +extern __read_mostly unsigned int sysctl_sched_migration_cost; +extern __read_mostly unsigned int sysctl_sched_nr_migrate; +extern __read_mostly unsigned int sysctl_sched_time_avg; int sched_proc_update_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 79a2a744648d..05b8650f06f5 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_TASK_H #define _LINUX_SCHED_TASK_H diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index df6ea6665b31..cb4828aaa34f 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_TASK_STACK_H #define _LINUX_SCHED_TASK_STACK_H diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h index d7b6dab956ec..cf257c2e728d 100644 --- a/include/linux/sched/topology.h +++ b/include/linux/sched/topology.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_TOPOLOGY_H #define _LINUX_SCHED_TOPOLOGY_H @@ -71,14 +72,6 @@ struct sched_domain_shared { atomic_t ref; atomic_t nr_busy_cpus; int has_idle_cores; - - /* - * Some variables from the most recent sd_lb_stats for this domain, - * used by wake_affine(). - */ - unsigned long nr_running; - unsigned long load; - unsigned long capacity; }; struct sched_domain { diff --git a/include/linux/sched/user.h b/include/linux/sched/user.h index 3c07e4135127..0dcf4e480ef7 100644 --- a/include/linux/sched/user.h +++ b/include/linux/sched/user.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_USER_H #define _LINUX_SCHED_USER_H diff --git a/include/linux/sched/wake_q.h b/include/linux/sched/wake_q.h index d03d8a9047dc..10b19a192b2d 100644 --- a/include/linux/sched/wake_q.h +++ b/include/linux/sched/wake_q.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_WAKE_Q_H #define _LINUX_SCHED_WAKE_Q_H diff --git a/include/linux/sched/xacct.h b/include/linux/sched/xacct.h index a28156a0d34a..c078f0a94cec 100644 --- a/include/linux/sched/xacct.h +++ b/include/linux/sched/xacct.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_XACCT_H #define _LINUX_SCHED_XACCT_H |