name : numa_balancing.h /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_NUMA_BALANCING_H #define _LINUX_SCHED_NUMA_BALANCING_H /* * This is the interface between the scheduler and the MM that * implements memory access pattern based NUMA-balancing: */ #include <linux/sched.h> #define TNF_MIGRATED 0x01 #define TNF_NO_GROUP 0x02 #define TNF_SHARED 0x04 #define TNF_FAULT_LOCAL 0x08 #define TNF_MIGRATE_FAIL 0x10 enum numa_vmaskip_reason { NUMAB_SKIP_UNSUITABLE, NUMAB_SKIP_SHARED_RO, NUMAB_SKIP_INACCESSIBLE, NUMAB_SKIP_SCAN_DELAY, NUMAB_SKIP_PID_INACTIVE, NUMAB_SKIP_IGNORE_PID, NUMAB_SKIP_SEQ_COMPLETED, }; #ifdef CONFIG_NUMA_BALANCING extern void task_numa_fault(int last_node, int node, int pages, int flags); extern pid_t task_numa_group_id(struct task_struct *p); extern void set_numabalancing_state(bool enabled); extern void task_numa_free(struct task_struct *p, bool final); bool should_numa_migrate_memory(struct task_struct *p, struct folio *folio, int src_nid, int dst_cpu); #else static inline void task_numa_fault(int last_node, int node, int pages, int flags) { } static inline pid_t task_numa_group_id(struct task_struct *p) { return 0; } static inline void set_numabalancing_state(bool enabled) { } static inline void task_numa_free(struct task_struct *p, bool final) { } static inline bool should_numa_migrate_memory(struct task_struct *p, struct folio *folio, int src_nid, int dst_cpu) { return true; } #endif #endif /* _LINUX_SCHED_NUMA_BALANCING_H */