RE: [PATCH] Westmere-EX support

[Villalovos, J. L <joh...@in...>]

William Cohen wrote:
> On 03/31/2011 11:35 AM, John Villalovos wrote:
>> Patch to add the CPUID for Westmere-EX processors.  Also added
>> comments to indicate which CPU models are which Westmere processors.
>> 
>> This patch will allow Oprofile to recognize Westmere-EX processors
>> as Westmere. 
>> 
>> Signed-off-by: John L. Villalovos <joh...@in...>
>> 
>> diff --git a/libop/op_hw_specific.h b/libop/op_hw_specific.h
>> index 4b4d55a..f1d67a5 100644
>> --- a/libop/op_hw_specific.h
>> +++ b/libop/op_hw_specific.h
>> @@ -113,8 +113,9 @@ static inline op_cpu op_cpu_specific_type(op_cpu
>>  		cpu_type)  			return CPU_CORE_I7; case 0x1c:
>>  			return CPU_ATOM;
>> -		case 0x25:
>> -		case 0x2c:
>> +		case 0x25:  /* Westmere mobile/desktop/entry level server */
>> +		case 0x2c:  /* Westmere-EP (Intel Xeon 5600 series) */
>> +		case 0x2f:  /* Westmere-EX */
>>  			return CPU_WESTMERE;
>>  		}
>>  	}
>> 
> 
> Hi John,
> 
> The patch looks pretty straightforward. Assuming that the Westmere-EX
> has the same core as the other Westmere processor but has different
> uncore hardware, it should be okay. Is there some documentation that
> include information about the Westmere-EX so we can verify that the
> Westmere-EX has the same core events as other Westmere processors?    

At this time the documentation hasn't been released in the Software Developer's Manual.

But Page C-4 of the Intel 64 and IA-32 Architectures Optimization Reference Manual states, "Intel microarchitecture code name Westmere are represented by 06_25H, 06_2CH and 06_2FH."

But don't have the detailed performance documentation available yet.

John

---
Intel on-site partner engineer at Red Hat, Inc.