svn commit: r219676 - head/sys/x86/x86
Jung-uk Kim
jkim at FreeBSD.org
Thu Mar 24 14:30:08 UTC 2011
On Thursday 24 March 2011 09:58 am, David Malone wrote:
> > No new ones. Just the old ones of updating the frequency and all
> > related variables without races.
>
> Is something simple, line an atomic write, an option for this? I
> guess we don't have 64-bit atomic writes on all platforms, but we
> could support it on some platforms.
If atomic 64-bit read/write is possible and it is absolutely
necessary, it has to be set via machdep.foo_freq, not
kern.timecounter.foo.frequency.
Jung-uk Kim
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