From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gleb Natapov <gleb@kernel.org>
Subject: Re: Updated Elvis Upstreaming Roadmap
Date: Tue, 24 Dec 2013 18:21:03 +0200
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Cc: "Michael S. Tsirkin" <mst@redhat.com>, abel.gordon@gmail.com,
	Anthony Liguori <anthony@codemonkey.ws>, asias@redhat.com,
	digitaleric@google.com, Eran Raichstein <ERANRA@il.ibm.com>,
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	Stefan Hajnoczi <stefanha@gmail.com>,
	Yossi Kuperman1 <YOSSIKU@il.ibm.com>,
	Eyal Moscovici <EYALMO@il.ibm.com>, bsd@redhat.com
To: Razya Ladelsky <RAZYA@il.ibm.com>
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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.