linux-kernel - [PATCH] oprofile: add support for Intel processor model 30

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Message-Id: <1280968025-16969-1-git-send-email-johunt@akamai.com>
Date:	Wed,  4 Aug 2010 17:27:05 -0700
From:	Josh Hunt <johunt@...mai.com>
To:	oprofile-list@...ts.sf.net, robert.richter@....com,
	andi@...stfloor.org, linux-kernel@...r.kernel.org
Cc:	juhlenko@...mai.com
Subject: [PATCH] oprofile: add support for Intel processor model 30

Newer Intel processors identifying themselves as model 30 are not recognized by
oprofile.

<cpuinfo snippet>
model           : 30
model name      : Intel(R) Xeon(R) CPU           X3470  @ 2.93GHz
</cpuinfo snippet>

Running oprofile on these machines gives the following:
+ opcontrol --init
+ opcontrol --list-events
oprofile: available events for CPU type "Intel Architectural Perfmon"

See Intel 64 and IA-32 Architectures Software Developer's Manual
Volume 3B (Document 253669) Chapter 18 for architectural perfmon events
This is a limited set of fallback events because oprofile doesn't know your CPU
CPU_CLK_UNHALTED: (counter: all)
        Clock cycles when not halted (min count: 6000)
INST_RETIRED: (counter: all)
        number of instructions retired (min count: 6000)
LLC_MISSES: (counter: all)
        Last level cache demand requests from this core that missed the LLC
(min count: 6000)
        Unit masks (default 0x41)
        ----------
        0x41: No unit mask
LLC_REFS: (counter: all)
        Last level cache demand requests from this core (min count: 6000)
        Unit masks (default 0x4f)
        ----------
        0x4f: No unit mask
BR_MISS_PRED_RETIRED: (counter: all)
        number of mispredicted branches retired (precise) (min count: 500)
+ opcontrol --shutdown

Tested using oprofile 0.9.6.

Signed-off-by: Josh Hunt <johunt@...mai.com>
---
 arch/x86/oprofile/nmi_int.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index b28d2f1..6f95251 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -657,6 +657,7 @@ static int __init ppro_init(char **cpu_type)
 		break;
 	case 0x2e:
 	case 26:
+	case 30:
 		spec = &op_arch_perfmon_spec;
 		*cpu_type = "i386/core_i7";
 		break;
-- 
1.7.0.4

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