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Date: Tue, 16 Jul 2024 16:11:05 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, LKML
 <linux-kernel@vger.kernel.org>, Masami Hiramatsu <mhiramat@kernel.org>, Dan
 Carpenter <dan.carpenter@linaro.org>, Thorsten Blum
 <thorsten.blum@toblux.com>
Subject: Re: [GIT PULL] ring-buffer: Updates for 6.11
Message-ID: <20240716161105.0aa6bfe1@rorschach.local.home>
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On Tue, 16 Jul 2024 16:05:26 -0400
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> wrote:

> On 2024-07-16 15:51, Steven Rostedt wrote:
> > 
> > 
> > Linus,
> > 
> > tracing/ring-buffer: Have persistent buffer across reboots  
> 
> Hi Steven,
> 
> Perhaps I'm missing something here, but we discussed previously that
> you would document the fact that users of this feature are expected
> to run the same kernel before/after reboot.
> 
> Looking at this PR, I fail to find that documentation, or in fact
> any documentation at all. Is this something that was overlooked ?

Hmm, was that for this code, or the one that used the reserved_mem
change, which isn't in this pull request, as it depends on the code
that is going through the mm tree.

Technically it can work with different kernels (I have even done that).
But yeah, it isn't guaranteed to work in such cases. But that is just a
documentation update.

-- Steve