linux-kernel - Re: [PATCH 0/2] arm64 SMMUv3 PMU driver with IORT support

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Message-ID: <3eac1295-dba2-ad79-d868-b538b13de91a@codeaurora.org>
Date:   Wed, 9 Aug 2017 11:48:45 -0400
From:   "Leeder, Neil" <nleeder@...eaurora.org>
To:     Hanjun Guo <hanjun.guo@...aro.org>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>
Cc:     nleeder@...eaurora.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Mark Langsdorf <mlangsdo@...hat.com>,
        Mark Salter <msalter@...hat.com>, Jon Masters <jcm@...hat.com>,
        Timur Tabi <timur@...eaurora.org>,
        Mark Brown <broonie@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Robin Murphy <robin.murphy@....com>
Subject: Re: [PATCH 0/2] arm64 SMMUv3 PMU driver with IORT support

Hi Hanjun,

On 8/9/2017 3:56 AM, Hanjun Guo wrote:
> Hi Neil,
> 
> On 2017/8/5 3:59, Neil Leeder wrote:
>> This adds a driver for the SMMUv3 PMU into the perf framework.
>> It includes an IORT update to support PM Counter Groups.
>>
>> IORT has no mechanism for determining device names so PMUs
>> are named based on their physical address.
>>
>> Tested on Qualcomm QDF2400. perf_fuzzer ran for 4+ hours
>> with no failures.
>>
>> Neil Leeder (2):
>>    acpi: arm64: add iort support for PMCG
>>    perf: add arm64 smmuv3 pmu driver
>>
>>   drivers/acpi/arm64/iort.c     |  54 +++
> 
> I would like to be Cced for next version.

I will. I apologise for not including all the interested parties on this patchset.

> 
>>   drivers/perf/Kconfig          |   9 +
>>   drivers/perf/Makefile         |   1 +
>>   drivers/perf/arm_smmuv3_pmu.c | 823 ++++++++++++++++++++++++++++++++++++++++++
>>   include/acpi/actbl2.h         |   9 +-
> 
> Do you have the acpica support code? I'm currently
> working on SMMUv3 MSI support and I would like to test
> it with MSI support for PMCG as well.

I don't have any code other than what was posted here.
What additional ACPICA support code is needed?

Neil
-- 
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.