From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Faruque Ansari <faruque.ansari@oss.qualcomm.com>
Cc: Sebastian Reichel <sre@kernel.org>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>,
Benson Leung <bleung@chromium.org>,
Tzung-Bi Shih <tzungbi@kernel.org>,
Srinivas Kandagatla <srini@kernel.org>,
Daniel Lezcano <daniel.lezcano@kernel.org>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-watchdog@vger.kernel.org, linux-arm-msm@vger.org,
kernel@pengutronix.de, avaneesh.dwivedi@oss.qualcomm.com,
Umang Chheda <umang.chheda@oss.qualcomm.com>
Subject: Re: [PATCH 0/2] power: reset: pscrr: record reset cause on panic and watchdog pretimeout
Date: Wed, 15 Jul 2026 08:20:54 +0200 [thread overview]
Message-ID: <alcmxtlQ43J2HVsP@pengutronix.de> (raw)
In-Reply-To: <20260714-pscrr-reboot-reason-v1-0-a09f23b12527@oss.qualcomm.com>
Hi Faruque,
On Tue, Jul 14, 2026 at 03:22:33PM +0530, Faruque Ansari wrote:
> This series extends the Power State Change Reason Register (PSCRR)[1]
> framework to capture two additional reset causes.
>
> 1. Kernel panic — a panic notifier writes PSCR_KERNEL_PANIC to NVMEM
> before the system resets, so the next boot can distinguish a panic
> from other reset causes.
>
> 2. Watchdog pretimeout — set_psc_reason(PSCR_WATCHDOG_PRETIMEOUT) is
> called from watchdog_notify_pretimeout(), when the watchdog fire its
> pre-reset notification before resetting the system, so the reason gets
> saved and we know its was a watchdog timeout that caused the reset.
Thank you, LGTM!
Right now I'm on a netdev conference, will need to take a closer look
after it.
Best Regards,
Oleksij
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prev parent reply other threads:[~2026-07-15 6:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-14 9:52 [PATCH 0/2] power: reset: pscrr: record reset cause on panic and watchdog pretimeout Faruque Ansari
2026-07-14 9:52 ` [PATCH 1/2] power: reset: pscrr: add kernel panic reason tracking Faruque Ansari
2026-07-14 9:52 ` [PATCH 2/2] watchdog: pscrr: add watchdog pretimeout " Faruque Ansari
2026-07-15 6:20 ` Oleksij Rempel [this message]
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