linux-kernel - Re: [GIT PULL] tracing: Updates for v6.9

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Date: Sat, 16 Mar 2024 09:31:10 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Masami Hiramatsu <mhiramat@...nel.org>, 
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Beau Belgrave <beaub@...ux.microsoft.com>, 
	Chengming Zhou <zhouchengming@...edance.com>, Huang Yiwei <quic_hyiwei@...cinc.com>, 
	John Garry <john.g.garry@...cle.com>, Randy Dunlap <rdunlap@...radead.org>, 
	Thorsten Blum <thorsten.blum@...lux.com>, Vincent Donnefort <vdonnefort@...gle.com>, 
	linke li <lilinke99@...com>, Daniel Bristot de Oliveira <bristot@...hat.com>
Subject: Re: [GIT PULL] tracing: Updates for v6.9

On Fri, 15 Mar 2024 at 09:27, Steven Rostedt <rostedt@...dmis.org> wrote:
>
> - Add ring_buffer memory mappings

I pulled this, looked at it, and unpulled it again.

I don't want to have years of "fix up the mistakes after the fact".

This is all done entirely incorrectly, and just as an example of that,
subbuf_map_prepare() is another case of "tracing code works around the
fact that it did things wrong in the first place".

So instead of merging a new feature that was mis-designed and is
already having code working around its mis-design, I'm not merging it
at all.

              Linus