* Peter Zijlstra <[email protected]> wrote:
> On Fri, 2007-06-01 at 09:11 -0700, Daniel Walker wrote:
> > On Fri, 2007-06-01 at 17:52 +0200, Peter Zijlstra wrote:
>
> > > The whole issue is that you don't have any control over what clocksource
> > > you'll end up with. If it so happens that pmtimer gets selected your
> > > whole box will crawl if its used liberaly, like the patch under
> > > discussion does.
> >
> > You can have control over it, which I think the whole point of this
> > discussion ..
>
> No you don't, clocksource will gladly discard the TSC when its not
> found stable enough (the majority of the systems today). While it
> would be good enough for sched_clock().
yeah, precisely. [ There is another thing as well: most embedded
architectures do not even implement LOCKDEP_SUPPORT today, so it wouldnt
be possible to enable lockstat on them anyway. So this whole topic is
ridiculous to begin with. How about fixing some real, non-imaginery bugs
instead? ;-) ]
Ingo
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