linux-kernel - Re: [PATCH 5/6] perf_counter: powerpc: Add processor back-end for MPC7450 family

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Message-Id: <E57BFC08-F847-463A-9D0F-55979C4B0524@kernel.crashing.org>
Date:	Thu, 18 Jun 2009 07:50:10 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	Ingo Molnar <mingo@...e.hu>, benh@...nel.crashing.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH 5/6] perf_counter: powerpc: Add processor back-end for MPC7450 family


On Jun 17, 2009, at 6:24 PM, Paul Mackerras wrote:

> Kumar Gala writes:
>
>> This should be something like:
>>
>> obj64-$(CONFIG_PPC_PERF_CTRS)-$(PPC_BOOK3S_64)
>>
>>> +obj32-$(CONFIG_PPC_PERF_CTRS)	+= mpc7450-pmu.o
>>
>> obj32-$(CONFIG_PPC_PERF_CTRS)-$(PPC_BOOK3S_32)
>>
>> Or use new Kconfig types as I suggested on patch 1/6
>
> Feel free to send a patch making those changes along with adding the
> code to support the Freescale embedded PMU. :)
>
> Paul.

In looking at doing this what suggestions do you have in implementing  
perf_instruction_pointer() if we don't have the equivalent of SIAR.   
Just use regs->nip ?

- k
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