Re: [PATCH v4 02/17] sched_clock: Use seqcount instead of rollingour own

[Nicolas Pitre]

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/