Thread Scheduling

Type	Level	UID	REFS	Title	Statement
Text					SPDX-License-Identifier: Apache-2.0
Requirement	1			Thread Scheduling
Requirement	1.1	ZEP-SRS-2-1		Support operation on more than one CPU	The Zephyr RTOS shall support operation on more than one physical CPU sharing the same kernel state.
Requirement	1.2	ZEP-SRS-2-2		Running threads on specific CPUs	The Zephyr RTOS shall provide an interface for running threads on specific sets of CPUs ( default is 1 CPU).
Requirement	1.3	ZEP-SRS-2-3		Exclusion between physical CPUs	The Zephyr RTOS shall provide an interface for mutual exclusion between multiple physical CPUs.
Requirement	2			Thread Scheduling
Requirement	2.1	ZEP-SRS-2-4	Parents: ZEP-SYRS-15 Thread support	Scheduling a thread based on an event	The Zephyr RTOS shall provide an interface to schedule a thread based on an event.
Requirement	2.2	ZEP-SRS-2-5		Deadline Scheduling Priorities	The Zephyr RTOS shall organize running threads by earliest deadline first priority.
Requirement	2.3	ZEP-SRS-2-6		Work Queue utility capable of running preemptible work items	The Zephyr RTOS shall provide a thread-pooled work queue utility capable of running preemptible work items with specific scheduler priorities.
Requirement	2.4	ZEP-SRS-2-7		Run user supplied functions in-order in a separate thread(s)	The Zephyr RTOS shall provide an interface for running user-supplied functions.
Requirement	2.5	ZEP-SRS-2-8		Organize running threads into a fixed list	The Zephyr RTOS shall organize running threads into a fixed list of numeric priorities.
Requirement	2.6	ZEP-SRS-2-9		Preemption support	The Zephyr RTOS shall support preemption of a running thread by a higher priority thread.
Requirement	2.7	ZEP-SRS-2-10		Un-preemptible thread priorities	The Zephyr RTOS shall support thread priorities which cannot be preempted by other user threads.
Requirement	2.8	ZEP-SRS-2-11		Time sharing of CPU resources	The Zephyr RTOS shall support time sharing of CPU resources among threads of the same priority.