From 0f47331475201c7785454030a9976c8ac902a35d Mon Sep 17 00:00:00 2001
From: Nathan Lynch <ntl@pobox.com>
Date: Thu, 10 Jul 2008 01:06:57 +1000
Subject: powerpc: Add PPC_FEATURE_PSERIES_PERFMON_COMPAT

Background from Maynard Johnson:
As of POWER6, a set of 32 common events is defined that must be
supported on all future POWER processors.  The main impetus for this
compat set is the need to support partition migration, especially from
processor P(n) to processor P(n+1), where performance software that's
running in the new partition may not be knowledgeable about processor
P(n+1).  If a performance tool determines it does not support the
physical processor, but is told (via the
PPC_FEATURE_PSERIES_PERFMON_COMPAT bit) that the processor supports
the notion of the PMU compat set, then the performance tool can
surface just those events to the user of the tool.

PPC_FEATURE_PSERIES_PERFMON_COMPAT indicates that the PMU supports at
least this basic subset of events which is compatible across POWER
processor lines.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 include/asm-powerpc/cputable.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include')

diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index 4fd76898975b..2a3e9075a5a0 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -27,6 +27,9 @@
 #define PPC_FEATURE_ARCH_2_06		0x00000100
 #define PPC_FEATURE_HAS_VSX		0x00000080
 
+#define PPC_FEATURE_PSERIES_PERFMON_COMPAT \
+					0x00000040
+
 #define PPC_FEATURE_TRUE_LE		0x00000002
 #define PPC_FEATURE_PPC_LE		0x00000001
 
-- 
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