mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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a7706e0c39
Now it will use the pause when cpu is in idle state. It will consume more power. If the mwait is supported, it will use the monitor/mwait to enter the deep CPU C-state. It helps to save power. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef SCHEDULE_H
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#define SCHEDULE_H
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#include <spinlock.h>
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#define NEED_RESCHEDULE (1U)
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#define NEED_OFFLINE (2U)
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#define NEED_SHUTDOWN_VM (3U)
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#define DEL_MODE_INIT (1U)
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#define DEL_MODE_IPI (2U)
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struct sched_object;
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typedef void (*run_thread_t)(struct sched_object *obj);
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typedef void (*prepare_switch_t)(struct sched_object *obj);
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struct sched_object {
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char name[16];
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struct list_head run_list;
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uint64_t host_sp;
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run_thread_t thread;
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prepare_switch_t prepare_switch_out;
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prepare_switch_t prepare_switch_in;
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};
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struct sched_context {
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uint64_t flags;
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uint64_t mwait_flags;
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uint64_t rserved[6];
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spinlock_t runqueue_lock;
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struct list_head runqueue;
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struct sched_object *curr_obj;
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spinlock_t scheduler_lock;
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} __aligned(64);
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void init_scheduler(void);
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void switch_to_idle(run_thread_t idle_thread);
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void get_schedule_lock(uint16_t pcpu_id);
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void release_schedule_lock(uint16_t pcpu_id);
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void set_pcpu_used(uint16_t pcpu_id);
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uint16_t allocate_pcpu(void);
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void free_pcpu(uint16_t pcpu_id);
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void add_to_cpu_runqueue(struct sched_object *obj, uint16_t pcpu_id);
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void remove_from_cpu_runqueue(struct sched_object *obj, uint16_t pcpu_id);
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void make_reschedule_request(uint16_t pcpu_id, uint16_t delmode);
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bool need_reschedule(uint16_t pcpu_id);
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void make_pcpu_offline(uint16_t pcpu_id);
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int32_t need_offline(uint16_t pcpu_id);
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void make_shutdown_vm_request(uint16_t pcpu_id);
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bool need_shutdown_vm(uint16_t pcpu_id);
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void schedule(void);
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void run_sched_thread(struct sched_object *obj);
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void arch_switch_to(void *prev_sp, void *next_sp);
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#endif /* SCHEDULE_H */
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