linux-kernel - Re: [PATCH v4 00/30] coresight: Support for ACPI bindings

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Message-ID: <23a50436-4bcf-3439-c189-093e1a58438d@arm.com>
Date:   Thu, 23 May 2019 16:31:54 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     leo.yan@...aro.org
Cc:     linux-arm-kernel@...ts.infradead.org, coresight@...ts.linaro.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 00/30] coresight: Support for ACPI bindings

Hi Leo,

On 23/05/2019 15:32, Leo Yan wrote:
> Hi Suzuki,
> 
> On Wed, May 22, 2019 at 11:34:33AM +0100, Suzuki K Poulose wrote:
> 
> [...]
> 
>> Changes since v2:
>>   - Drop the patches exposing device links via sysfs, to be posted as separate
>>     series.
> 
> Thanks for sharing the git tree linkage in another email.  Just want
> to confirm, since patch set v3 you have dropped the patch "coresight:
> Expose device connections via sysfs" [1], will you send out this patch
> after ACPI binding support patches has been merged?

We are awaiting Mike's comment on the approach, as his CTI support also
needs something similar.

> 
> When you send out the new patch for exposing device connection, please
> loop me so that I can base on it for perf testing related works.

Sure, will do. As such, the perf testing should not be affected by that
series. It is just a helper to demonstrate the connections. But yes, it
will definitely help you to choose an ETF for a cluster, if you had multiple
ETFs on the system. Otherwise, you should be OK.

Please be aware that the power management support is missing on ACPI platform.
So you must make sure, by other means, that the debug domain is powered up.

Cheers
Suzuki