On 07/04/2013 06:27 PM, Thomas Gleixner wrote:
>> > BTW, why we allow user override a second best clocksource? I mean user
>> > can override the tsc with hpet. because undetected unstable tsc?
> The user can decide to override with clocksource=jiffies if he wants
> for testing purposes. That wont switch into highres ever if done from
> the kernel command line. Now we have a sysfs interface, so we need to
> sanity check the user override against highres.
>
> The override is quite useful to test hpet, pmtimer on a machine which
> would always select TSC.
Got it. thanks a lot for friendly explanation!
--
Thanks
Alex
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