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From: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
To: "Jerry.Hoemann@hpe.com" <Jerry.Hoemann@hpe.com>
Cc: "linux-watchdog@vger.kernel.org" <linux-watchdog@vger.kernel.org>,
	Guenter Roeck <linux@roeck-us.net>,
	Wim Van Sebroeck <wim@linux-watchdog.org>,
	Jonathan Corbet <corbet@lwn.net>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	Esben Haabendal <esben@haabendal.dk>,
	"martin@hundeboll.net" <martin@hundeboll.net>,
	Rasmus Villemoes <Rasmus.Villemoes@prevas.se>
Subject: Re: [PATCH v9 0/3] watchdog: allow setting deadline for opening /dev/watchdogN
Date: Wed, 1 May 2019 06:32:02 +0000	[thread overview]
Message-ID: <31d75b51-6cd6-9029-40a5-fec631e110bf@prevas.dk> (raw)
In-Reply-To: <20190501000511.GA25050@anatevka>

On 01/05/2019 02.05, Jerry Hoemann wrote:
> On Mon, Jan 21, 2019 at 08:45:38PM +0000, Rasmus Villemoes wrote:
>>
>> These patches allow one to set a maximum time for which the kernel
>> will feed the watchdog,
> 
> Rasmus,
> 
> Sorry if I missed it, but are you still looking into adding
> this feature? 

I am, and still intend to get around to it when I get some idle cycles.

I was thinking it might also be useful with
> kdump when a watchdog was running in the first kernel.
> 
> After a panic if kdump is configured, the system will boot the
> crash kernel.  If a watchdog was running in the first kernel
> it would still running in the crash kernel environment.
> 
> Some of the drivers on HPE systems take a non-trivial amount of time
> to reset during the crash kernel boot, so it would be good to have
> the core pet the watchdog until user space is ready.  But as the
> crash kernel environment has its issues,  we really don't want
> the core to ping the watchdog indefinitely.

Thanks, it's great to hear that others would also be interested in this.
This will move it up a few places on my todo list. I'll try to remember
to add you to the cc list.

Thanks,
Rasmus

      reply	other threads:[~2019-05-01  6:32 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-16 12:14 [PATCH v8 0/3] watchdog: allow setting deadline for opening /dev/watchdogN Rasmus Villemoes
2019-01-16 12:14 ` [PATCH v8 1/3] watchdog: introduce watchdog.open_timeout commandline parameter Rasmus Villemoes
2019-01-17 21:24   ` Guenter Roeck
2019-01-16 12:14 ` [PATCH v8 2/3] watchdog: introduce CONFIG_WATCHDOG_OPEN_TIMEOUT Rasmus Villemoes
2019-01-16 12:14 ` [PATCH v8 3/3] watchdog: make the device time out at open_deadline when open_timeout is used Rasmus Villemoes
2019-01-16 14:45 ` [PATCH v8 0/3] watchdog: allow setting deadline for opening /dev/watchdogN Esben Haabendal
2019-01-21 20:45 ` [PATCH v9 " Rasmus Villemoes
2019-01-21 20:45   ` [PATCH v9 1/3] watchdog: introduce watchdog.open_timeout commandline parameter Rasmus Villemoes
2019-01-22 17:29     ` Guenter Roeck
2019-01-29 20:35       ` Rasmus Villemoes
2019-01-30  7:40         ` Rasmus Villemoes
2019-01-21 20:45   ` [PATCH v9 2/3] watchdog: introduce CONFIG_WATCHDOG_OPEN_TIMEOUT Rasmus Villemoes
2019-01-21 20:45   ` [PATCH v9 3/3] watchdog: make the device time out at open_deadline when open_timeout is used Rasmus Villemoes
2019-05-01  0:05   ` [PATCH v9 0/3] watchdog: allow setting deadline for opening /dev/watchdogN Jerry Hoemann
2019-05-01  6:32     ` Rasmus Villemoes [this message]

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