Re: [PATCH] RCU for low latency (experimental)

Andrea Arcangeli
2004-03-24T23:53:14Z

On Thu, Mar 25, 2004 at 05:16:43AM +0530, Dipankar Sarma wrote:
> On Thu, Mar 25, 2004 at 12:34:30AM +0100, Andrea Arcangeli wrote:
> > On Thu, Mar 25, 2004 at 04:41:45AM +0530, Dipankar Sarma wrote:
> > > That was not 16 callbacks per tick, it was 16 callbacks in one
> > > batch of a single softirq. And then I reschedule the RCU tasklet
> >
> > sorry so you're already using tasklets in current code? I misunderstood
> > the current code then.
>
> + if (count >= rcumaxbatch) {
> + RCU_plugticks(cpu) = rcuplugticks;
> + if (!RCU_plugticks(cpu))
> + tasklet_hi_schedule(&RCU_tasklet(cpu));
> + break;
> + }
>
> That does it. Although, the tasklet handler needs to optimized

yes I've noticed it reading just the above chunk of your patch, I just
didn't notice there was a tasklet already there ready for use :/.

thanks.