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acrn-hypervisor/hypervisor/include/common/schedule.h

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initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
license: Replace license text with SPDX tag Replace the BSD-3-Clause boiler plate license text with an SPDX tag. Fixes: #189 Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2018-05-26 01:49:13 +08:00
* SPDX-License-Identifier: BSD-3-Clause
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
*/
#ifndef _HV_CORE_SCHEDULE_
#define _HV_CORE_SCHEDULE_
HV:treewide:Cleanup the type for parameters of bitmap operations For reducing sign conversion in hypervisor: Update parameters of bitmap operations as unsigned type; Update the input of related caller as unsigned type when the caller's input parameter is const variable or the variable is only used by bitmap operations. V1-->V2: (1) Explicit casting for the first parameter of all bitmap operations; (2) Remove mask operation for explicit casting of all bitmap operations, since masking is useless. Otherwise, this trucation is dangerous. V2-->V3: (1) Explicit casting for all bitmap operations parameter; (2) Masking bit offset with 6-bit; (3) Add few comments about bit offset. V3-->V4: add '\' for some statement of bitmap macro Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-30 00:17:34 +08:00
#define NEED_RESCHEDULE (1U)
#define NEED_OFFLINE (2U)
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
HV:treewide:C99-friendly per_cpu implementation change the per_cpu method The current implementation of per_cpu relies on several non-c99 features, and in additional involves arbitrary pointer arithmetic which is not MIS- RA C friendly. This patch introduces struct per_cpu_region which holds all the per_cpu variables. Allocation of per_cpu data regions and access to per_cpu vari- ables are greatly simplified, at the cost of making all per_cpu varaibl- es accessible in files. Signed-off-by: Huihuang Shi <huihuang.shi@intel.com>
2018-06-05 15:25:07 +08:00
struct sched_context {
spinlock_t runqueue_lock;
struct list_head runqueue;
HV:treewide:transfer the struct member types to non-basic types The struct member types should be transfer to non-basic types, chaned it to length-prefix(uint32_t,int32_t ...) type. Signed-off-by: Huihuang Shi <huihuang.shi@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-29 14:29:34 +08:00
uint64_t flags;
HV:treewide:C99-friendly per_cpu implementation change the per_cpu method The current implementation of per_cpu relies on several non-c99 features, and in additional involves arbitrary pointer arithmetic which is not MIS- RA C friendly. This patch introduces struct per_cpu_region which holds all the per_cpu variables. Allocation of per_cpu data regions and access to per_cpu vari- ables are greatly simplified, at the cost of making all per_cpu varaibl- es accessible in files. Signed-off-by: Huihuang Shi <huihuang.shi@intel.com>
2018-06-05 15:25:07 +08:00
struct vcpu *curr_vcpu;
spinlock_t scheduler_lock;
};
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
void init_scheduler(void);
HV: treewide: enforce unsignedness of pcpu_id In the hypervisor, physical cpu id is defined as "int" or "uint32_t" type in the hypervisor. So there are some sign conversion issues about physical cpu id (pcpu_id) reported by static analysis tool. Sign conversion violates the rules of MISRA C:2012. In this patch, define physical cpu id as "uint16_t" type for all modules in the hypervisor and change related codes. The valid range of pcpu_id is 0~65534, INVALID_PCPU_ID is defined to the invalid pcpu_id for error detection, BROADCAST_PCPU_ID is broadcast pcpu_id used to notify all valid pcpu. The type of pcpu_id in the struct vcpu and vcpu_id is "int" type, this will be fixed in another patch. V1-->V2: * Change the type of pcpu_id from uint32_t to uint16_t; * Define INVALID_PCPU_ID for error detection; * Define BROADCAST_PCPU_ID to notify all valid pcpu. V2-->V3: * Update comments for INVALID_PCPU_ID and BROADCAST_PCPU_ID; * Update addtional pcpu_id; * Convert hexadecimals to unsigned to meet the type of pcpu_id; * Clean up for MIN_PCPU_ID and MAX_PCPU_ID, they will be defined by configuration. Note: fix bug in the init_lapic(), the pcpu_id shall be less than 8, this is constraint by implement in the init_lapic(). Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-20 15:42:52 +08:00
void get_schedule_lock(uint16_t pcpu_id);
void release_schedule_lock(uint16_t pcpu_id);
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
HV: treewide: enforce unsignedness of pcpu_id In the hypervisor, physical cpu id is defined as "int" or "uint32_t" type in the hypervisor. So there are some sign conversion issues about physical cpu id (pcpu_id) reported by static analysis tool. Sign conversion violates the rules of MISRA C:2012. In this patch, define physical cpu id as "uint16_t" type for all modules in the hypervisor and change related codes. The valid range of pcpu_id is 0~65534, INVALID_PCPU_ID is defined to the invalid pcpu_id for error detection, BROADCAST_PCPU_ID is broadcast pcpu_id used to notify all valid pcpu. The type of pcpu_id in the struct vcpu and vcpu_id is "int" type, this will be fixed in another patch. V1-->V2: * Change the type of pcpu_id from uint32_t to uint16_t; * Define INVALID_PCPU_ID for error detection; * Define BROADCAST_PCPU_ID to notify all valid pcpu. V2-->V3: * Update comments for INVALID_PCPU_ID and BROADCAST_PCPU_ID; * Update addtional pcpu_id; * Convert hexadecimals to unsigned to meet the type of pcpu_id; * Clean up for MIN_PCPU_ID and MAX_PCPU_ID, they will be defined by configuration. Note: fix bug in the init_lapic(), the pcpu_id shall be less than 8, this is constraint by implement in the init_lapic(). Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-20 15:42:52 +08:00
void set_pcpu_used(uint16_t pcpu_id);
fix "function return type inconsistent" MISRA C required function return type should be consistented. Signed-off-by: Huihuang Shi <huihuang.shi@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-25 17:51:00 +08:00
uint16_t allocate_pcpu(void);
HV: treewide: enforce unsignedness of pcpu_id In the hypervisor, physical cpu id is defined as "int" or "uint32_t" type in the hypervisor. So there are some sign conversion issues about physical cpu id (pcpu_id) reported by static analysis tool. Sign conversion violates the rules of MISRA C:2012. In this patch, define physical cpu id as "uint16_t" type for all modules in the hypervisor and change related codes. The valid range of pcpu_id is 0~65534, INVALID_PCPU_ID is defined to the invalid pcpu_id for error detection, BROADCAST_PCPU_ID is broadcast pcpu_id used to notify all valid pcpu. The type of pcpu_id in the struct vcpu and vcpu_id is "int" type, this will be fixed in another patch. V1-->V2: * Change the type of pcpu_id from uint32_t to uint16_t; * Define INVALID_PCPU_ID for error detection; * Define BROADCAST_PCPU_ID to notify all valid pcpu. V2-->V3: * Update comments for INVALID_PCPU_ID and BROADCAST_PCPU_ID; * Update addtional pcpu_id; * Convert hexadecimals to unsigned to meet the type of pcpu_id; * Clean up for MIN_PCPU_ID and MAX_PCPU_ID, they will be defined by configuration. Note: fix bug in the init_lapic(), the pcpu_id shall be less than 8, this is constraint by implement in the init_lapic(). Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-20 15:42:52 +08:00
void free_pcpu(uint16_t pcpu_id);
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
void add_vcpu_to_runqueue(struct vcpu *vcpu);
void remove_vcpu_from_runqueue(struct vcpu *vcpu);
void default_idle(void);
void make_reschedule_request(struct vcpu *vcpu);
HV: treewide: enforce unsignedness of pcpu_id In the hypervisor, physical cpu id is defined as "int" or "uint32_t" type in the hypervisor. So there are some sign conversion issues about physical cpu id (pcpu_id) reported by static analysis tool. Sign conversion violates the rules of MISRA C:2012. In this patch, define physical cpu id as "uint16_t" type for all modules in the hypervisor and change related codes. The valid range of pcpu_id is 0~65534, INVALID_PCPU_ID is defined to the invalid pcpu_id for error detection, BROADCAST_PCPU_ID is broadcast pcpu_id used to notify all valid pcpu. The type of pcpu_id in the struct vcpu and vcpu_id is "int" type, this will be fixed in another patch. V1-->V2: * Change the type of pcpu_id from uint32_t to uint16_t; * Define INVALID_PCPU_ID for error detection; * Define BROADCAST_PCPU_ID to notify all valid pcpu. V2-->V3: * Update comments for INVALID_PCPU_ID and BROADCAST_PCPU_ID; * Update addtional pcpu_id; * Convert hexadecimals to unsigned to meet the type of pcpu_id; * Clean up for MIN_PCPU_ID and MAX_PCPU_ID, they will be defined by configuration. Note: fix bug in the init_lapic(), the pcpu_id shall be less than 8, this is constraint by implement in the init_lapic(). Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-20 15:42:52 +08:00
int need_reschedule(uint16_t pcpu_id);
void make_pcpu_offline(uint16_t pcpu_id);
int need_offline(uint16_t pcpu_id);
hv: handle cpu offline request in idle thread Change need_scheduled fileds of schedule context to flags because it's not only used for need_schedule check. Add two functions to request/handle cpu offline. The reason we only handle cpu offline request in idle thread is that we should pause the vcpu running on target pcpu. Then it's only possible that target pcpu get cpu offline request in idle thread. Signed-off-by: Yin Fegnwei <fengwei.yin@intel.com> Acked-by: Eddie Dong <Eddie.dong@intel.com>
2018-06-02 22:31:58 +08:00
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
void schedule(void);
void vcpu_thread(struct vcpu *vcpu);
#endif