Re: [PATCH 0/2] Make the TSC safe to be used by gettimeofday().

On 11/14/06, Suleiman Souhlal <[email protected]> wrote:

I believe that the results returned will always be monotonic, as long as
the frequency of the TSC does not change from under us (that is, without
the kernel knowing). This is because we "synchronize" each CPU's vxtime
with a global time source (HPET) every time we know the TSC rate changes.


Does this hold after a suspend/resume cycle? You could be resuming
with a different CPU clock than what you suspended with, and I'm not
sure anything guarantees an early enough re-sync.

 Shem
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  - From: Suleiman Souhlal <[email protected]>
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- Re: [PATCH 0/2] Make the TSC safe to be used by gettimeofday().
  - From: Suleiman Souhlal <[email protected]>

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