Jia-Ju Bai wrote: > Hi, > > I am a freshman in developing OpenBSD drivers, and I have a question in > lock usage in OpenBSD kernel code. > > I only find two kinds of locks which are often used in OpenBSD drivers, > namely "mutex lock" and "rw lock". I want to know which lock can be held > when the current thread can sleep. > > From my knowledge of OpenBSD document, I only find that "mutex lock" > can not be used in this situation. So I have two questions" > (1) What about "rw lock"? > (2) What about other kinds of locks?
you're on the right track. the rw_init and mtx_init man pages go into this in more detail and explain the various other options as well.
