Re: [PROBLEM] hard-lock with kmemtrace, relayfs, and splice

From: Tom Zanussi
Date: Tue Oct 14 2008 - 01:47:22 EST


Hi Pekka,

On Tue, 2008-10-14 at 08:13 +0300, Pekka Enberg wrote:
> Hi Tom,
>
> Tom Zanussi wrote:
> > To me, that sounds like how it should work - if kmemtrace is disabled,
> > it shouldn't be logging anything, and that's in fact what I saw when
> > debugging this - it started out disabled and therefore nothing being
> > logged to relay (printks confirmed that). When I wrote 1 to the enabled
> > file, data started getting logged to relay and to the *.out files.
> >
> > So I don't know why the enabled state behaves the way it does, or if
> > it's unexpected, but that anyway doesn't seem like a relay problem to
> > me.
>
> Oh, right. Looking at kmemtraced.c, we never enable kmemtrace, just
> disable it (which doesn't make much sense). Bug in README or the code.
> Eduard?
>
> Btw, Tom, you can add my
>
> Tested-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
>
> to your patch if you want. Are you going to send it to Andrew or do you
> want me to pick it up with rest of the kmemtrace patches?

If you pick it up that would be fine with me. Here's my sob:

Signed-off-by: Tom Zanussi <tzanussi@xxxxxxxxx>

Thanks,

Tom

>
> Pekka

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