From: Wim Van Sebroeck <wim@iguana.be>
To: anish kumar <anish198519851985@gmail.com>
Cc: linux@roeck-us.net, linux-watchdog@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [RFC]Watchdog:core: constant pinging until userspace timesout when delay very less
Date: Thu, 27 Jun 2013 21:31:38 +0200 [thread overview]
Message-ID: <20130627193138.GB30433@spo001.leaseweb.com> (raw)
In-Reply-To: <1370167987-14252-1-git-send-email-anish198519851985@gmail.com>
Hi Anish,
> Certain watchdog drivers use a timer to keep kicking the watchdog at
> a rate of 0.5s (HZ/2) untill userspace times out.They do this as
> we can't guarantee that watchdog will be pinged fast enough
> for all system loads, especially if timeout is configured for
> less than or equal to 1 second(basically small values).
>
> As suggested by Wim Van Sebroeck & Guenter Roeck we should
> add this functionality of individual watchdog drivers in the core
> watchdog core.
Have you considered the effect this change has on all watchdog drivers
that don't need a timer?
Kind regards,
Wim.
next prev parent reply other threads:[~2013-06-27 19:31 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-02 10:13 [PATCH] [RFC]Watchdog:core: constant pinging until userspace timesout when delay very less anish kumar
2013-06-02 10:26 ` anish singh
2013-06-03 14:38 ` anish singh
2013-06-03 15:27 ` Guenter Roeck
2013-06-03 16:53 ` anish singh
2013-06-03 22:25 ` Guenter Roeck
2013-06-04 3:09 ` anish singh
2013-06-05 3:09 ` anish singh
2013-06-06 3:00 ` anish singh
2013-06-06 4:41 ` Guenter Roeck
2013-06-08 13:14 ` anish singh
2013-06-27 19:31 ` Wim Van Sebroeck [this message]
2013-06-28 3:31 ` anish singh
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