From: Don Zickus <dzickus@redhat.com>
To: Prarit Bhargava <prarit@redhat.com>
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
John Stultz <johnstul@us.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
lwoodman@redhat.com, jbaron@redhat.com
Subject: Re: [PATCH] tty, add kref to sysrq handlers
Date: Thu, 19 Jul 2012 10:06:10 -0400 [thread overview]
Message-ID: <20120719140609.GA15158@redhat.com> (raw)
In-Reply-To: <1339514522-1742-1-git-send-email-prarit@redhat.com>
On Tue, Jun 12, 2012 at 11:22:02AM -0400, Prarit Bhargava wrote:
> [This seems to have been missed ... sending again]
>
> On a large system with a large number of tasks, the output of
>
> echo t > /proc/sysrq-trigger
>
> can take a long period of time. If this period is greater than the period
> of the current clocksource, the clocksource watchdog will mark the
> clocksource as unstable and fail the clocksource over.
A lot of our customers are running into this issue (especially the big
boxes). This is patch solves their problem nicely.
The approach is a little heavier than the current approach, but it allows
a useful feature like sysrq-t to work reliably.
Acked-by: Don Zickus <dzickus@redhat.com>
next prev parent reply other threads:[~2012-07-19 14:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-12 15:22 [PATCH] tty, add kref to sysrq handlers Prarit Bhargava
2012-07-19 14:06 ` Don Zickus [this message]
-- strict thread matches above, loose matches on Subject: below --
2012-07-27 13:04 Prarit Bhargava
2012-07-27 12:19 Prarit Bhargava
2012-05-14 14:41 Prarit Bhargava
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