linux-kernel - Re: [PATCH 5/8] powerpc: add 24x7 interface header

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Message-Id: <20140201055807.8E65F2C00C7@ozlabs.org>
Date:	Sat,  1 Feb 2014 16:58:07 +1100 (EST)
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Cody P Schafer <cody@...ux.vnet.ibm.com>,
	Linux PPC <linuxppc-dev@...ts.ozlabs.org>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Cody P Schafer <cody@...ux.vnet.ibm.com>
Subject: Re: [PATCH 5/8] powerpc: add 24x7 interface header

On Thu, 2014-16-01 at 23:53:51 UTC, Cody P Schafer wrote:
> 24x7 (also called hv_24x7 or H_24X7) is an interface to obtain
> performance counters from the hypervisor. These counters do not have a
> fixed format/possition and are instead documented in a "24x7 Catalog",
> which is provided by the hypervisor (that interface is also documented
> in this header).
> 
> This method of obtaining performance counters from the hypervisor is
> intended to paritialy replace the gpci interface.

Same comments as for the previous patch.

cheers
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