Re: [PATCH] pstore/ftrace: add a kernel parameter to start pstore recording

From: Uwe Kleine-König
Date: Tue Nov 16 2021 - 12:29:01 EST

Hello Steven,

On Tue, Nov 16, 2021 at 12:06:03PM -0500, Steven Rostedt wrote:
> On Thu, 10 Jun 2021 10:21:34 +0200
> Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> wrote:
> > With this knob you can enable pstore recording early enough to debug
> > hangs happening during the boot process before userspace is up enough to
> > enable it via sysfs.
> Is this still needed? It's still in my internal patchwork, and I haven't
> seen any responses.

I didn't see any responses either, and unless someone else implemented
something similar somewhere else, it's still needed.

The change was actually useful to debug a clk problem, where the machine
freezed when a certain driver was loaded.

Thanks for keeping track of this change. I would only have noticed it
missing next time when I have to debug a similar problem.

Best regards

Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | |

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