mdev : bug corrected (patch attached) - recursive_action version

[Mike Frysinger]

On Thursday 14 June 2007, Jason Curl wrote:
> Mike Frysinger wrote:
> > On Wednesday 13 June 2007, souf wrote:
> >> Le mercredi 13 juin 2007 à 17:13 -0400, Mike Frysinger a écrit :
> >>> plus, i think we're talking microseconds difference here, not seconds
> >>
> >> in an real time system that counts much
> >
> > if we were talking costs that'd have to be paid over and over, you might
> > have an argument, but we're not ... we're talking about a 1 time cost
> > only which is paid at startup
>
> I'm not trying to start a flame war here, but we try here everything we
> can to speed up start up times for embedded systems. You're right, 1ms
> is insignificant at start when compared to loading and starting the
> kernel. Often in Automotive there are requirements of the order of 100ms
> to get basic subsystems up and running, so please don't think this is
> not an important topic, it should always be in the "back of our minds".

i'm aware of automotive issues, but i have yet to see one where timing 
requirements were that tight at boot up and could wait until userspace ...

that said, i'm really not convinced Souf's implementation of scanning /dev 
really is faster (or correct) compared to what's in svn now ... there's a lot 
of messing around with memory in there
-mike
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