On Mon, Aug 26, 2002 at 10:14:32AM -0700, Maksim Yevmenkin wrote: > Bosko Milekic wrote: > > > > On Mon, Aug 26, 2002 at 09:41:43AM -0700, Maksim Yevmenkin wrote: > > > John Baldwin wrote: > > > > > > > > On 26-Aug-2002 M. Warner Losh wrote: > > > > > can you call wakeup(9) from a fast interrupt handler? > > > > > > [ ...] > > > > > > > > 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 > ^^^^^^^^^^^^^^^^^^^^^^^^^^ > my understanding is that John was talking about any > interrupt handler. Not just fast interrupt hander.
Yeah, you can't call anything that would _sleep_ (e.g., msleep()). You could still grab a MTX_DEF mutex for a non-fast interrupt handler and possibly block waiting to get it. -- Bosko Milekic * [EMAIL PROTECTED] * [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
