[PATCH V2 2/5] powerpc, perf: Add basic assembly code to read BHRB entries on POWER8
Anshuman Khandual
khandual at linux.vnet.ibm.com
Wed Apr 17 14:00:44 EST 2013
On 04/16/2013 10:53 PM, Segher Boessenkool wrote:
>> +/* r3 = n (where n = [0-1023])
>> + * The maximum number of BHRB entries supported with PPC_MFBHRBE
>> instruction
>> + * is 1024. We have limited number of table entries here as POWER8
>> implements
>> + * 32 BHRB entries.
>> + */
>> +
>> +/* .global read_bhrb */
>> +_GLOBAL(read_bhrb)
>> + cmpldi r3,1023
>
> This should be 31, since that is the last entry in the table below.
Hey Segher,
Would fix this in the next version. Thanks for pointing it out.
Regards
Anshuman
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