linux-kernel - [42/59] oprofile: add support for Intel processor model 30

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Message-Id: <20100824222526.067220480@clark.site>
Date:	Tue, 24 Aug 2010 15:24:54 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Josh Hunt <johunt@...mai.com>,
	Robert Richter <robert.richter@....com>
Subject: [42/59] oprofile: add support for Intel processor model 30

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Josh Hunt <johunt@...mai.com>

commit a7c55cbee0c1bae9bf5a15a08300e91d88706e45 upstream.

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>
Reviewed-by: Andi Kleen <ak@...ux.intel.com>
Signed-off-by: Robert Richter <robert.richter@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/x86/oprofile/nmi_int.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -618,6 +618,7 @@ static int __init ppro_init(char **cpu_t
 		*cpu_type = "i386/core_2";
 		break;
 	case 0x1a:
+	case 0x1e:
 	case 0x2e:
 		spec = &op_arch_perfmon_spec;
 		*cpu_type = "i386/core_i7";


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