linux-kernel - Re: [PATCH] perf cs-etm: Add support for coresight trace for any range of CPUs

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Message-ID: <902dea0e-456b-d763-fdb5-a520ea3d7536@arm.com>
Date:   Thu, 20 Apr 2023 14:03:36 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
        James Clark <james.clark@....com>
Cc:     mathieu.poirier@...aro.org, acme@...nel.org,
        darren@...amperecomputing.com, scott@...amperecomputing.com,
        scclevenger@...amperecomputing.com, linux-kernel@...r.kernel.org,
        coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        mike.leach@...aro.org
Subject: Re: [PATCH] perf cs-etm: Add support for coresight trace for any
 range of CPUs

On 20/04/2023 13:37, Ganapatrao Kulkarni wrote:
> 
> 
> On 20-04-2023 06:00 pm, James Clark wrote:
>>
>>
>> On 20/04/2023 12:47, Ganapatrao Kulkarni wrote:
>>>

...

>>> My patch is rebased on 6.3-RC7 codebase with Mike's 3 perf patches
>>> related to dynamic id [1] support(queued for 6.4).
>>>
>>> "perf report -D" works for me.
>>
>> I was referring to sparse CPU lists, which I think you mentioned above
>> doesn't work even with this patch.
>>
>>>
>>> [1] https://www.spinics.net/lists/linux-perf-users/msg27452.html
>>>
>>
>> It should be based on the next branch here:
>> git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
> 
> OK.

It need not be. Since this patch is purely perf tools patch and has
nothing to do with the kernel drivers, it should be beased on whatever
the tip of the perf tool tree is. Otherwise we risk rebasing to that
eventually.

Cheers
Suzuki