linux-kernel - Re: [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc register

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Message-ID: <56A09AD7.3030801@linux.vnet.ibm.com>
Date:	Thu, 21 Jan 2016 14:16:15 +0530
From:	Anju T <anju@...ux.vnet.ibm.com>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	khandual@...ux.vnet.ibm.com, maddy@...ux.vnet.ibm.com,
	jolsa@...hat.com, dsahern@...il.com, acme@...hat.com,
	sukadev@...ux.vnet.ibm.com, hemant@...ux.vnet.ibm.com,
	naveen.n.rao@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc
 register

On Wednesday 20 January 2016 04:08 PM, Michael Ellerman wrote:
> Hi Anju,
>
> On Mon, 2016-01-11 at 15:58 +0530, Anju T wrote:
>
>> The enum definition assigns an 'id' to each register in "struct pt_regs"
>> of arch/powerpc. The order of these values in the enum definition are
>> based on the corresponding macros in arch/powerpc/include/uapi/asm/ptrace.h.
> Sorry one thing ...
>
>> diff --git a/arch/powerpc/include/uapi/asm/perf_regs.h b/arch/powerpc/include/uapi/asm/perf_regs.h
>> new file mode 100644
>> index 0000000..cfbd068
>> --- /dev/null
>> +++ b/arch/powerpc/include/uapi/asm/perf_regs.h
>> @@ -0,0 +1,49 @@
>> +#ifndef _ASM_POWERPC_PERF_REGS_H
>> +#define _ASM_POWERPC_PERF_REGS_H
>> +
>> +enum perf_event_powerpc_regs {
>> +	PERF_REG_POWERPC_GPR0,
>> +	PERF_REG_POWERPC_GPR1,
>> +	PERF_REG_POWERPC_GPR2,
>> +	PERF_REG_POWERPC_GPR3,
>> +	PERF_REG_POWERPC_GPR4,
>> +	PERF_REG_POWERPC_GPR5,
>> +	PERF_REG_POWERPC_GPR6,
>> +	PERF_REG_POWERPC_GPR7,
>> +	PERF_REG_POWERPC_GPR8,
>> +	PERF_REG_POWERPC_GPR9,
>> +	PERF_REG_POWERPC_GPR10,
>> +	PERF_REG_POWERPC_GPR11,
>> +	PERF_REG_POWERPC_GPR12,
>> +	PERF_REG_POWERPC_GPR13,
>> +	PERF_REG_POWERPC_GPR14,
>> +	PERF_REG_POWERPC_GPR15,
>> +	PERF_REG_POWERPC_GPR16,
>> +	PERF_REG_POWERPC_GPR17,
>> +	PERF_REG_POWERPC_GPR18,
>> +	PERF_REG_POWERPC_GPR19,
>> +	PERF_REG_POWERPC_GPR20,
>> +	PERF_REG_POWERPC_GPR21,
>> +	PERF_REG_POWERPC_GPR22,
>> +	PERF_REG_POWERPC_GPR23,
>> +	PERF_REG_POWERPC_GPR24,
>> +	PERF_REG_POWERPC_GPR25,
>> +	PERF_REG_POWERPC_GPR26,
>> +	PERF_REG_POWERPC_GPR27,
>> +	PERF_REG_POWERPC_GPR28,
>> +	PERF_REG_POWERPC_GPR29,
>> +	PERF_REG_POWERPC_GPR30,
>> +	PERF_REG_POWERPC_GPR31,
>> +	PERF_REG_POWERPC_NIP,
>> +	PERF_REG_POWERPC_MSR,
>> +	PERF_REG_POWERPC_ORIG_R3,
>> +	PERF_REG_POWERPC_CTR,
>> +	PERF_REG_POWERPC_LNK,
>> +	PERF_REG_POWERPC_XER,
>> +	PERF_REG_POWERPC_CCR,
> You skipped SOFTE here at my suggestion, because it's called MQ on 32-bit.
>
> But I've changed my mind, I think we *should* define SOFTE, and ignore MQ,
> because MQ is unused. So just add:
>
>    +	PERF_REG_POWERPC_SOFTE,


Thank you for reviewing the patch.

Yes here we can add SOFTE.


Thanks

Anju
>
>
>> +	PERF_REG_POWERPC_TRAP,
>> +	PERF_REG_POWERPC_DAR,
>> +	PERF_REG_POWERPC_DSISR,
>> +	PERF_REG_POWERPC_MAX,
>> +};
>> +#endif /* _ASM_POWERPC_PERF_REGS_H */
> cheers
>