Re: [PATCH] tty, add kref to sysrq handlers

[Don Zickus]

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@xxxxxxxxxx>
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