From: dzickus@redhat.com (Don Zickus)
To: linux-arm-kernel@lists.infradead.org
Subject: mpcore watchdogs questions
Date: Mon, 6 Dec 2010 08:56:11 -0500 [thread overview]
Message-ID: <20101206135611.GC21786@redhat.com> (raw)
In-Reply-To: <AANLkTikRbF9yVUMLo2rRfM0zC2GRRhA7MD7dyCMR2+Sm@mail.gmail.com>
On Mon, Dec 06, 2010 at 10:34:31AM +0100, Per Fransson wrote:
>
> The way I see it, the idea behind the lockup detection code, and please correct
> me if I'm wrong, is to cover the following case on a per-CPU basis:
>
> * Assuming the CPU in question is actually chugging along, is it
> getting real work
> done, where "real work" is defined as being able to schedule a high-prio kernel
> thread and have it perform the actions expected of it (kicking the watchdog).
> In the hardlockup case "real work" is instead defined as being able to
> respond to
> hrtimers going off.
Yup, that sounds right.
Cheers,
Don
prev parent reply other threads:[~2010-12-06 13:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-03 13:56 mpcore watchdogs questions Per Fransson
2010-12-03 14:58 ` Don Zickus
2010-12-06 9:34 ` Per Fransson
2010-12-06 13:56 ` Don Zickus [this message]
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