From: Cody P Schafer <cody@linux.vnet.ibm.com>
Date: Fri, 14 Mar 2014 05:00:39 +0000 (+1100)
Subject: powerpc/perf: Add a shared interface to get gpci version and capabilities
X-Git-Tag: v3.15-rc1~124^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d1b21ad7d1574c7aaa5b9acdb3a02fd37a11c01;p=pandora-kernel.git

powerpc/perf: Add a shared interface to get gpci version and capabilities

This exposes a simple way to grab the firmware provided
collect_priveliged, ga, expanded, and lab capability bits. All of these
bits come in from the same gpci request, so we've exposed all of them.

Only the collect_priveliged bit is really used by the hv-gpci/hv-24x7
code, the other bits are simply exposed in sysfs to inform the user.

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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