On Wed, Aug 08, 2007 at 11:10:32AM +0200, John Sigler wrote:
> [ Recipients list trimmed ]
>
> Paul E. McKenney wrote:
>
> >This patch was developed as a part of the -rt kernel development and
> >meant to provide better latencies when read-side critical sections of
> >RCU don't disable preemption. As a consequence of keeping track of RCU
> >readers, the readers have a slight overhead (optimizations in the paper).
> >This implementation co-exists with the "classic" RCU implementations
> >and can be switched to at compiler.
>
> I cannot parse the last sentence :-)
Oops... :-/
> Did you mean that this new implementation can be chosen (over the
> classic implementation) at compile-time?
Yes, via config variables. CONFIG_CLASSIC_RCU selects the "classic"
RCU implementation, and CONFIG_PREEMPT_RCU selects the preemptible RCU.
CONFIG_PREEMPT_CPU depends on CONFIG_PREEMPT, so that you only are
permitted to specify CONFIG_PREEMPT_RT in preemptible kernels.
Thanx, Paul
-
To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
