Migrating suspend quirks away from hal

Victor Lowther victor.lowther at gmail.com
Mon Nov 30 16:14:58 PST 2009

On Nov 30, 2009, at 9:00 AM, Martin Pitt <martin.pitt at ubuntu.com> wrote:

> Hello Victor,
> Victor Lowther [2009-11-25  8:43 -0600]:
>> No, it translates the .fdi files that are currently on the system  
>> into a
>> native format that uses bash-style extended regular expressions  
>> instead of
>> the .fdi ad-hoc pattern matching scheme.
> Ah, got it now. Since I am using KMS, the original script didn't write
> out the translated files.


>> No need, I already do that in the current script for convienence.   
>> Once we
>> actually decide that this is the way forward, moving the XML  
>> translation
>> into its own script or rewriting it in a language that actually  
>> understands
>> XML will be pretty easy.
> I don't think that the translation script matters much. As long as it
> is correct for the current set of quirks, it just needs to work once,
> and from then on we keep maintaining the quirks DB in the new format,
> in pm-utils itself. As already discussed, the current quirks DB is by
> and large stable, for a lot of legacy hardware, so it won't change
> that often.
> A more interesting question is the performance of parsing/evaluating
> the native files. They seem pretty verbose to me, but as long as you
> only use bash commands/operations and avoid calling an external
> program for each line, it shouldn't actually matter much.

That is exactly what I try to do, and performance is acceptable so far  
(assuming the quirks are translated in advance). I will actually  
profile it once I have reports from machines that actually require  

> Also, the file format and performance optimizations can then be done
> easily, since they are an internal implementation detail of pm-utils
> and don't affect anything else.


> So, what do you think about committing the generated quirks into
> pm-utils and removing the hal bits? Then we can ask submitters of new
> quirks to report them to pm-utils first, instead of/in addition to
> committing them to hal.

It will do for the short term.

> I just had a look at hal-info commit history, and we had some 30
> quirks additions in 2009, and only one in the last three months.

Cool. I should have a branch of pm-utils with native quirk db handling  
(but not the native quirkdb, just the translator) out soon for testing  
in the fd.o git repo soon.

> Thanks,
> Martin
> -- 
> Martin Pitt                        | http://www.piware.de
> Ubuntu Developer (www.ubuntu.com)  | Debian Developer   
> (www.debian.org)

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