[PATCH] driver: add CONFIG_DEBUG_PROBES

[Sascha Hauer]

On Mon, Jun 28, 2021 at 09:03:45AM +0200, Ahmad Fatoum wrote:
> CONFIG_DEBUG_INITCALLS can be very useful to roughly pinpoint what
> causes barebox to hang. With deep probe, most probes run at the same
> initcall level making the debug option much less useful.
> 
> Add a new CONFIG_DEBUG_PROBES that will instead log whenever a probe is
> invoked. The text's horizontal alignment is increased with each
> recursive probe making the option suitable for debugging some deep probe
> issues as well.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
> ---
>  common/Kconfig        |  4 ++++
>  drivers/base/driver.c | 17 +++++++++++++++--
>  2 files changed, 19 insertions(+), 2 deletions(-)

Nice. I applied with one change I hope you're ok with:

> +	depth++;
> +
> +	pr_report_probe("%*sprobe-> %s\n", depth, "", dev_name(dev));

I changed the indentation to 4 here.

Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |