On 05/06/2010 09:28 AM, Ingo Molnar wrote:
quoted text
>
> Yep. Also, most of the default distro kernels will have 3 sets of facilities:
>
>   - preempt notifiers
>   - tracepoints
>   - sw events
>
> which is crazy. We can just standardize on using the tracepoint interface
> definition methods - they are properly typed, widespread and well-known enough
> to be perfect for this.
>
> ( They are also under intense optimization - the jump-tracepoints patch makes
>    them probably even cheaper than preempt notifiers, in the off case. )
>
>    

What about the on case?  kvm has preempt notifiers enabled all the time, 
and relies on their being fast.

-- 
error compiling committee.c: too many arguments to function

--
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/