Benjamin LaHaise wrote:
> On Tue, Dec 17, 2002 at 11:11:19AM -0800, H. Peter Anvin wrote:
>
>>>against 0xfffffxxx and "rollback" (or complete) any incomplete
>>>gettimeofday call prior to saving a task's state. but i bet that test is
>>>undesirable on all interrupt paths.
>>>
>>
>>Exactly. This is a real problem.
>
>
> No, just take the number of context switches before and after the attempt
> to read the time of day.
>
How do you do that from userspace, atomically? A counter in the shared
page?
-hpa
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This archive was generated by hypermail 2b29 : Mon Dec 23 2002 - 22:00:18 EST