| Date | Fri, 19 Jul 2013 10:20:19 -0400 (EDT) | From | Nicolas Pitre <> | Subject | Re: [PATCH v4 02/17] sched_clock: Use seqcount instead of rolling our own |
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On Fri, 19 Jul 2013, Will Deacon wrote:
> Looks good to me. The current scheme would be very fiddly to extend to > 64-bit values on 32-bit architectures without cheap atomic doubleword > accesses.
You should have a look at include/linux/cnt32_to_63.h. This could be applied to pure software counters if the low part is atomically increased.
Nicolas
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