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

From: Joel Fernandes
Date: Mon Aug 06 2018 - 20:43:26 EST


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/

thanks,

- Joel