Re: race in usbnet.c in full RT

[Eugeny S. Mints]

Steven Rostedt wrote:
> On Wed, 2005-06-08 at 12:34 +0200, Ingo Molnar wrote:
>
> > * Eugeny S. Mints <emints@xxxxxxxxxxxxx> wrote:
> >
> >
> > > seems there is a race in drivers/net/usbnet.c in full RT mode. To be 
> > > honest I haven't hardly checked this on the latest kernel and latest 
> > > RT patch but just took a look at usbnet.c and latest RT patch and 
> > > haven't observed any related changes.
> >
> > thanks, i've applied your patch to my tree. Note that your patch is 
> > specific to the -RT kernel (both in terms of semantics and in term of 
> > API dependence), so it does not make any sense to apply it upstream.  
> > David, please ignore it.
>
>
> Is this action only take place on the same CPU, or is this also an SMP
> problem?  I would think if this is a race with full RT, that this may
> also be a race with SMP, unless the race is guaranteed to always happen
> on the same CPU. Then this is only a RT problem.
thanks, good point. looks like it could be SMP problem but probably 
David is able to say it for sure as usb host code expert.
David?
	Eugeny
> -- Steve


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