On Tue, Dec 17, 2013 at 12:04:42PM +0200, Razya Ladelsky wrote:
> 4. vhost statistics
>
> The issue that was raised for the vhost statistics was using ftrace
> instead of the debugfs mechanism.
> However, looking further into the kvm stat mechanism, we learned that
> ftrace didn't replace the plain debugfs mechanism, but was used in
> addition to it.
>
It did. Statistics in debugfs is deprecated. No new statistics are
added there. kvm_stat is using ftrace now (if available) and of course
ftrace gives seamless integration with perf.
--
Gleb.
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