On Fri, 2007-06-22 at 09:43 +0200, Ingo Molnar wrote:
> * Christoph Hellwig <[email protected]> wrote:
>
> > On Fri, Jun 22, 2007 at 12:00:15AM -0400, Steven Rostedt wrote:
> > > I believe this was originally done by Dipankar Sarma. I pulled these
> > > changes from the -rt kernel.
> > >
> > > For better preformance, RCU should use a softirq instead of a
> > > tasklet.
> >
> > I was under the imporession we had merged this a while ago due to
> > tasklet bottlenecks on big machines. Any reason why it has been
> > delayed so long?
>
> i thought so too, up until a few weeks ago. I think i might have mixed
> it up mentally with the scheduler rebalancing tasklet: that was
> converted to softirqs on my request and made me forget about the RCU
> tasklet thing.
>
I think the reason it was dropped was because it was part of a large
patch series that didn't make it into the kernel. And unfortunately,
this was dropped in that regard.
If you do pull this patch in, I would like to get a sign-off-by from
Dipankar and give him credit, since I think he was the original author.
I just pulled it out of the -rt branch.
-- Steve
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