linux-kernel - Re: [PATCH v2] drivers/coresight: ultrasoc: Add System Memory Buffer driver

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Date:   Sat, 6 Nov 2021 15:31:20 +0800
From:   "liuqi (BA)" <liuqi115@...wei.com>
To:     Randy Dunlap <rdunlap@...radead.org>, <mathieu.poirier@...aro.org>,
        <suzuki.poulose@....com>, <mike.leach@...aro.org>
CC:     <coresight@...ts.linaro.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linuxarm@...wei.com>
Subject: Re: [PATCH v2] drivers/coresight: ultrasoc: Add System Memory Buffer
 driver



On 2021/11/5 9:36, Randy Dunlap wrote:
> On 11/4/21 6:20 PM, Qi Liu wrote:
>> diff --git a/drivers/hwtracing/coresight/ultrasoc/Kconfig 
>> b/drivers/hwtracing/coresight/ultrasoc/Kconfig
>> new file mode 100644
>> index 000000000000..c18c25bf9df3
>> --- /dev/null
>> +++ b/drivers/hwtracing/coresight/ultrasoc/Kconfig
>> @@ -0,0 +1,12 @@
>> +# SPDX-License-Identifier: MIT
>> +#
>> +# ultrasoc configuration
>> +#
>> +config ULTRASOC_SMB
>> +    tristate "Ultrasoc system memory buffer drivers"
>> +        depends on ARM64 && CORESIGHT
> 
> The "depends" line should be indented with a tab instead of spaces...
> 
ah, yes, my editor might be set incorrectly, thanks for the reminder, 
I'll correct it next time.

Qi
>> +    help
>> +      This enables support for the Ultrasoc system memory buffer
>> +      driver that is responsible for receiving the trace data from
>> +      Coresight ETM devices and storing them to a system buffer
>> +      respectively.
> 
>