Re: [PATCH] sched: Support current clocksource handling infallback sched_clock().

[Daniel Walker]

On Thu, 2009-05-28 at 14:59 +0200, Peter Zijlstra wrote:

> 
> 
> CPU0                           CPU1
> 
> clock = ACCESS_ONCE(sched_clocksource);
> 
>                                unload module
>                                  clocksource_unregister()
>                                    sched_clocksource = jiffies
>                                  unmap data/text
> 
> cyc2ns(clock, clocksource_read(clock)) <--- fireworks
> 
> 

Do any module based clocksources even exist right now?
clocksource_unregister only seems to be used 3 times..

Daniel

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