Commit 13/14 of sched_lock decomposition.
- Add a new parameter to cpu_switch() that is used to release the lock on the outgoing thread and properly acquire the lock on the incoming thread. This parameter is not required for schedulers that don't do per-cpu locking and architectures which do not support it may continue to use the 4BSD scheduler. This feature is presently not supported on ia64 Tested by: kris, current@ Tested on: i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc. Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=170306
@ -356,7 +356,7 @@ cpu_reset()
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}
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void
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cpu_switch(struct thread *old, struct thread *new)
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cpu_switch(struct thread *old, struct thread *new, struct mtx *mtx)
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{
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struct pcb *oldpcb, *newpcb;
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