[bitbake-devel] [PATCH] runqueue: Add output for -S option for listing the changepoints compared with an sstate cache

[Martin Jansa]

On Mon, Dec 30, 2013 at 09:29:38AM -0700, Chris Larson wrote:
> On Mon, Dec 30, 2013 at 9:18 AM, Chris Larson <clarson at kergoth.com> wrote:
> 
> > On Sat, Dec 28, 2013 at 6:24 AM, Martin Jansa <martin.jansa at gmail.com>wrote:
> >
> >> On Wed, Dec 18, 2013 at 04:21:27PM +0000, Richard Purdie wrote:
> >> > Its useful to understand where the delta starts against an existing
> >> sstate cache
> >> > for a given target. Adding this to the output of the -S option seems
> >> like a
> >> > natural fit.
> >> >
> >> > We use the hashvalidate function to figure this out and assume it can
> >> find siginfo
> >> > files for more than just the setscene tasks.
> >>
> >> I haven't tried to find smaller reproducer or exact part of code where
> >> it happends, but in bigger builds I have it fails with
> >>
> >> I'll try to reproduce and narrow it a bit, but if you have tip where
> >> to look first..
> >>
> >> IndexError: list index out of range:
> >
> >
> > I’m hitting this now as well.
> 
> 
> To clarify further, I’m hitting this with stock poky master, qemux86,
> bitbake -S core-image-base.
> 
> Actually, this is getting in my way trying to do something I don’t want it
> doing anyway. I want to dump the signature data from one config, and use
> bitbake-whatchanged from another build. If I wanted to compare something
> right here, I’d have run bitbake-whatchanged. This change confuses me a
> bit. -S emits signature data, according to the bitbake help and the
> semantics of the command. Are we trying to kill bitbake-whatchanged in
> favor of making -S do both jobs, emit and compare?

Same here, I'm using bitbake -S from
oe-core/scripts/sstate-diff-machines.sh

and this added analysis and output is IMHO very useful, but it would be
nice to control it with some new option (and keep default -S behavior
fast and simple).

It looks like the error is triggered for every task which wasn't built
before (e.g. running bitbake -S with empty sstate-cache/tmp-eglibc or
bitbake -S world after bitbake some-image).

I see it for many do_fetch and do_rm_work_all tasks.

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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