Subject: Re: more new scsi midlayer questions
To: Manuel Bouyer <>
From: Matthew Jacob <>
List: tech-kern
Date: 05/21/2001 08:21:41
On Mon, 21 May 2001, Manuel Bouyer wrote:

> On Sat, May 19, 2001 at 10:28:16PM -0700, Matthew Jacob wrote:
> > 
> > 
> > scsipi_run_queue is private.
> > 
> > The only function available for the HBA to get queues restarted is
> > scsipi_channel_timed_thaw- but this forces you to call from a softcall
> > stack (interrupt stack). 
> > 
> > Now that we can use threads to our heart's content, wouldn't it be nice to be
> > able to simply call scsipi_run_queue directly?
> I don't think you should call scsipi_run_queue() directly. If you want to
> restart the queue it's because it has been stopped, so you need to thaw it.
> Maybe we should expose scsipi_channel_taw(), but I think scsipi_run_queue()
> should be keep private.

I think you're missing the point. The only mechanism with which
scsipi_run_queue can be called now after a thaw is via the indirect softcall
mechanism in scsipi_channel_thaw (which is exposed). I don't care whether
scsipi_run_queue itself is private. I *do* care that you can't restart except
via a softcall. That's just plain wrong when you've already got a per-HBA