linux-kernel - Re: [PATCH v8 2/7] reboot: hw_protection_trigger: use standardized numeric shutdown/reboot reasons instead of strings

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Message-ID: <Z_3KB0tLX6sKhdFI@google.com>
Date: Tue, 15 Apr 2025 02:52:55 +0000
From: Tzung-Bi Shih <tzungbi@...nel.org>
To: Oleksij Rempel <o.rempel@...gutronix.de>
Cc: Sebastian Reichel <sre@...nel.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Benson Leung <bleung@...omium.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Matti Vaittinen <mazziesaccount@...il.com>,
	Mark Brown <broonie@...nel.org>, kernel@...gutronix.de,
	linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Zhang Rui <rui.zhang@...el.com>, Lukasz Luba <lukasz.luba@....com>,
	linux-pm@...r.kernel.org,
	Søren Andersen <san@...v.dk>,
	Guenter Roeck <groeck@...omium.org>,
	Ahmad Fatoum <a.fatoum@...gutronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	chrome-platform@...ts.linux.dev
Subject: Re: [PATCH v8 2/7] reboot: hw_protection_trigger: use standardized
 numeric shutdown/reboot reasons instead of strings

On Fri, Apr 11, 2025 at 02:17:52PM +0200, Oleksij Rempel wrote:
> Prepares the kernel for the Power State Change Reason (PSCR) recorder,
> which will store shutdown and reboot reasons in persistent storage.
> 
> Instead of using string-based reason descriptions, which are often too
> large to fit within limited storage spaces (e.g., RTC clocks with only 8
> bits of battery-backed storage), we introduce `enum psc_reason`. This
> enumerates predefined reasons for power state changes, making it
> efficient to store and retrieve shutdown causes.
> 
> [...]
>  drivers/platform/chrome/cros_ec_lpc.c |  2 +-

Acked-by: Tzung-Bi Shih <tzungbi@...nel.org>