Re: Measuring tools - top and interrupts

[Björn Steinbrink]

On 2006.06.24 13:41:57 +0200, Mike Galbraith wrote:
> On Sat, 2006-06-24 at 11:52 +0200, Mike Galbraith wrote:
> > On Sat, 2006-06-24 at 11:21 +0200, Björn Steinbrink wrote:
> > > 
> > > The non-SMP call to update_process_times() is in do_timer_interrupt_hook(),
> > > so I guess the above is not the Right Thing to do.
> > 
> > Ah, there it is.  That's what I was looking for.  I figured that doing
> > what I did had to be wrong, but tried it for grins anyway... was pretty
> > surprised when it worked (kinda).
> 
> Calling update_process_times() in do_timer_interrupt_hook() flat does
> not work here.  Calling it in smp_local_timer_interrupt() works fine.  
> 
> Oh joy.

I can reproduce it now, seems to require CONFIG_4KSTACKS to fail. Can
you confirm that?

Björn
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