On Monday 02 April 2007 12:34:44 Thomas Gleixner wrote:
> Maxim,
>
> can you please fix your mail client to do proper line wraps at 78
> chars ?
Sure, but this way it mangles patches :-)
>
> On Mon, 2007-04-02 at 11:57 +0300, Maxim Levitsky wrote:
> > Hi,
> >
> > I finally figured out why one-shoot mode is enabled on my system only
> > and only if local apic is enabled.
>
> You could have asked me :)
Thanks
>
> > I tried to remove this check and this resulted in hard lock-up during
> > boot with nolapic_timer
> > Maybe this was connected to the fact that this function is called on
> > both cpus, and if one set a
> > broadcasting device(HPET) to one shoot mode, second is still not aware
> > of this.
> >
> > Is it a bug or feature ?
>
> One shot mode - used for NO_HZ and HIGH_RES - requires a working per cpu
> timer.
>
> When you disable the lapic timers, then we register the lapic timers
> just as dummy devices to utilize the broadcast mechanism. Otherwise the
> second CPU would be not working at all. I decided not to enable
> nohz/highres when we have no usable per cpu devices available.
>
> So consider it a feature :)
>
> tglx
>
>
>
Hi,
Fortunately on my system lapic timer works.
But then tick_broadcast_switch_to_oneshot is redundant, isn't it?
Thanks for quick answer,
Best regards,
Maxim Levitsky
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
