Simon Falvey wrote:
>
> Richard,
>
> I have been sent an e-mail from a fellow IBMer of yours from India
> letting me know that a "test" release of the patch sent out to the
> mailling list actually contains ALT+SYSRQ+c key sequence which will
> invoke a crash dump. I presume that this will make it into the download
> area at some point for general consumption.
This is correct -- I put this in the latest test patch, and I'll
be including it into the next major release. Thanks, Simon, I
apologize for not getting this in sooner.
Richard's concern is also correct. We'll want to extend this
mechanism in the future so that DProbes, SysRQ, etc., all can
call into the dump mechanism to get either a full or partial
dump. This is what the plan indicates.
Are there other developers out there wanting to chip in on the
development of some of this new stuff? I haven't asked in a while,
so I figured I'd throw that comment out again.
--Matt
> Cheers
>
> Simon
>
> Richard J Moore wrote:
>
> >Simon,
> >
> >Dump triggers is certainly a thing of interest to us. But not just a
> >keyboard sequence, and API call and in fact the ability to dump from any
> >code path. That latter can be achieved today using DProbes to trigger a
> >dump. What we're considering is enhancing lkcd to be able to let the system
> >continue to run having invoked a dump for non-crash reasons.
> >
> >Question: what's the right key sequence?
> >
> >Presumably there's no definitive answer. In which case we need a
> >configurable sequence. See any problems with that?
> >
> >Richard
> >
> >
> >Richard Moore - RAS Project Lead - Linux Technology Centre (ATS-PIC).
> >http://oss.software.ibm.com/developerworks/opensource/linux
> >Office: (+44) (0)1962-817072, Mobile: (+44) (0)7768-298183
> >IBM UK Ltd, MP135 Galileo Centre, Hursley Park, Winchester, SO21 2JN, UK
> >
> >
> >Simon Falvey <simon.falvey@xxxxxxxxxxx>@oss.sgi.com on 01/08/2001 08:39:25
> >
> >Please respond to Simon Falvey <simon.falvey@xxxxxxxxxxx>
> >
> >Sent by: owner-lkcd@xxxxxxxxxxx
> >
> >
> >To: "'lkcd@xxxxxxxxxxx'" <lkcd@xxxxxxxxxxx>
> >cc:
> >Subject: LKCD in mainstream release?
> >
> >
> >Hi all,
> >
> >Does any one have any idea when we can expect lkcd in the main kernel
> >release? It seems to be pretty stable now.
> >
> >Also has anyone considered putting a hook into the SysRq key sequence
> >to get it to crash on demand? I put one in on my system and find it very
> >useful in diagnosing hangs.
> >
> >Simon
> >
> >
> >
> >
> >
> >
|