On 26-Aug-2002 M. Warner Losh wrote: > can you call wakeup(9) from a fast interrupt handler? I couldn't find > the specific answer from the man page: > > All processes > sleeping on a single ident are woken up later by wakeup, often called > from inside an interrupt routine, to indicate that the resource the pro- > cess was blocking on is available now. > > The only reason I ask is because sio seems to go out of its way to > schedule a soft interrupt to deal with waking up processes, which then > calls wakeup...
Since wakeup only needs a spin lock, it is probably ok. You just can't call anything that would sleep (in any interrupt handler) or block on a non-spin mutex. -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
