Re: [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage

From: Steven Rostedt
Date: Mon Aug 06 2018 - 21:43:07 EST


On Mon, 6 Aug 2018 17:43:19 -0700
Joel Fernandes <joelaf@xxxxxxxxxx> wrote:

> On Mon, Aug 6, 2018 at 12:50 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> >
> > With this patch applied, I'm constantly getting lockdep errors. Instead
> > of doing a full revert of the patch, I did this, which makes all those
> > errors go away. I may apply this for now, and we can revisit having
> > lockdep use the tracepoint code. But since it's currently always
> > enabled, I'm thinking of just leaving this as is. The macros are still
> > clean from Joel's patch.
> >
> > Thoughts?
>
> I like your patch. Thanks a lot for doing this.. It keeps most of the
> benefits of my patch while avoiding the issues with lockdep. I agree
> we can look at the remaining lockdep issue after. There were several
> lockdep issues with this patch that I fixed over the the months, but
> there's still the one that Masami reported that I believe you're also
> seeing. Once I'm back I'll work on figuring that one out.
>
> Could you pull in the fixes to the other issues I posted though? With
> that we should be good.
> https://lore.kernel.org/patchwork/patch/971104/
> https://lore.kernel.org/patchwork/patch/971829/
>

I already had these applied when I created this patch ;-)

Thanks, I'll add it.

-- Steve