Re: [RFC patch 04/15] get_cycles() : powerpc64 HAVE_GET_CYCLES(update)

[Paul Mackerras]

Mathieu Desnoyers writes:

> Do you know if mtfb implies an instruction synchronization (isync) ? I

It doesn't.

> think that if it does not, the new get_cycles_barrier() might have to be
> used at some locations in the kernel code if more precise timestamp
> order is required.

OK.  I'll let you figure out where. :)

Paul.
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