Re: netconsole hangs w/ alt-sysrq-t

[Matt Mackall]

On Mon, Jun 28, 2004 at 12:58:22PM -0400, Jeff Moyer wrote:
> ==> Regarding Re: netconsole hangs w/ alt-sysrq-t; Matt Mackall <mpm@xxxxxxxxxxx> adds:
> mpm> No, I think we get to this on the non-NAPI route as well. The ->poll
> mpm> check keeps us from filtering twice.
> 
> I'll have to take your word for it on this one, as I can't find a way into
> this code for the non-napi case.  Would anyone care to give an
> authoritative answer on this?

I could be mistaken, but that's my recollection from last summer.
Hopefully I'll have some spare cycles for this next week.
 
> One other thing we might consider is adding a call to touch_nmi_watchdog()
> to zap_completion_queue.

Not sure how I feel about that yet. If we can't get out of the guts of
netpoll in a timely fashion, then perhaps that's an indication that
the watchdog should indeed fire. Describe the scenario where you think
we should do this, please.

-- 
Mathematics is the supreme nostalgia of our time.
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