linux-kernel - Re: [PATCH v1] coresight: add node to reset all coresight devices

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Message-ID: <5d9d5127a2f3e42380c78f77cfc719cd@codeaurora.org>
Date:   Wed, 28 Apr 2021 17:58:34 +0800
From:   taozha@...eaurora.org
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Tingwei Zhang <tingwei@...eaurora.org>,
        Mao Jinlong <jinlmao@...eaurora.org>,
        Yuanfang Zhang <zhangyuanfang@...eaurora.org>
Subject: Re: [PATCH v1] coresight: add node to reset all coresight devices

On 2021-04-23 18:02, Greg Kroah-Hartman wrote:
> On Fri, Apr 23, 2021 at 04:29:38PM +0800, Tao Zhang wrote:
>> Add new reset_source_sink node to be able to disable all active
>> coresight devices.
>> In this way, we no longer need to manually disable all active
>> coresight devices one by one. After enabling multiple coresight
>> paths, users can reset their status more conveniently by this
>> node.
>> 
>> This patch base on coresight-next repo
>> http://git.linaro.org/kernel/coresight.git/log/?h=next
>> 
>> And this patch depends on the following patch
>> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2551216.html
>> 
>> Signed-off-by: Tingwei Zhang <tingwei@...eaurora.org>
>> Signed-off-by: Mao Jinlong <jinlmao@...eaurora.org>
>> Signed-off-by: Tao Zhang <taozha@...eaurora.org>
>> ---
>>  drivers/hwtracing/coresight/coresight-core.c | 72 
>> ++++++++++++++++++++++++----
>>  1 file changed, 64 insertions(+), 8 deletions(-)
> 
> You added new sysfs files with no new Documentation/ABI entries, so we
> have no idea how to review this code to determine if it does what you
> want it to do :(
> 
> thanks,
> 
> greg k-h
I will update this part according to your suggestion in patch v2.

Best,
Tao