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

Started byMichael Ellerman <mpe@ellerman.id.au>
First post2016-01-20 11:40 +0100
Last post2016-01-21 09:50 +0100
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  Re: [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc  register Michael Ellerman <mpe@ellerman.id.au> - 2016-01-20 11:40 +0100
    Re: [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc  register Anju T <anju@linux.vnet.ibm.com> - 2016-01-21 09:50 +0100

#1313089 — Re: [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc register

FromMichael Ellerman <mpe@ellerman.id.au>
Date2016-01-20 11:40 +0100
SubjectRe: [PATCH V10 1/4] perf/powerpc: assign an id to each powerpc register
Message-ID<qSYlc-56e-5@gated-at.bofh.it>
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,


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

cheers

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#1314008

FromAnju T <anju@linux.vnet.ibm.com>
Date2016-01-21 09:50 +0100
Message-ID<qTj6i-2ML-11@gated-at.bofh.it>
In reply to#1313089
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
>

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