Re: [Xen-devel] [PATCH] xen-tmem-list-parse: fix ugly parse output

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [PATCH] xen-tmem-list-parse: fix ugly parse output"):
> On Wed, 2012-11-14 at 00:08 +0000, Dan Magenheimer wrote:
> 
> > > Signed-off-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
> 
> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx> and applied, sorry for
> the delay.

I'm happy to backport this to 4.2.  Since none of this is tested by
the autotests and the change is self-contained, there is no point
waiting to see if it survives in -unstable and I have done so right
away.

As for 4.1, I think that's really very much in the deep freeze and
receiving essential bug/compatibility/security fixes only so I would
be inclined to punt on this patch.

I have another comment though:

  The program xen-tmem-list-parse parses the output of xm/xl tmem-list
  into human-readable format.  A missing NULL terminator sometimes
  causes garbage to be spewed where the two-letter pool type
  should be output.

Would it not be much better if  xl tmem-list  produced a sane format
to start with ?  I haven't seen what the old and new formats are like
but in general I think  xl foo-list  should produce information useful
to humans.

In xl for the future we should be providing json output for things
which need to be machine-readable.  This may need a transition plan of
course.

Ian.

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