Re: [PATCH 03/11 v3] ftrace: Optimize testing what context current is in

[Steven Rostedt]

On Mon, 9 Nov 2020 13:17:08 +0100
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> This patch is misleading, it doesn't optimize it nearly as much as is
> possible and actually fixes the softirq case, which isn't at all
> mentioned.

This is actually an old patch I had for some time (it's been in the
ring buffer code for a while). I honestly didn't even realize that it
fixed softirq, which is why it isn't mentioned ;-)

I only said "optimize" I didn't say "optimal", thus it can be improved
more. When I first wrote this, I saw non noise improvements with it, so
it does indeed optimize it.

> 
> Let me go do that other patch.

I'll keep this patch, and replace the code when your version is
available.

Thanks!

-- Steve