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CC:     <prime.zeng@huawei.com>, <liuqi115@huawei.com>,
        <zhangshaokun@hisilicon.com>, <linuxarm@huawei.com>,
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Subject: Re: [PATCH v4 2/8] hwtracing: Add trace function support for
 HiSilicon PCIe Tune and Trace device
To:     John Garry <john.garry@huawei.com>,
        Yicong Yang <yangyicong@hisilicon.com>,
        <gregkh@linuxfoundation.org>, <helgaas@kernel.org>,
        <alexander.shishkin@linux.intel.com>, <lorenzo.pieralisi@arm.com>,
        <will@kernel.org>, <mark.rutland@arm.com>,
        <mathieu.poirier@linaro.org>, <suzuki.poulose@arm.com>,
        <mike.leach@linaro.org>, <leo.yan@linaro.org>,
        <jonathan.cameron@huawei.com>, <daniel.thompson@linaro.org>,
        <joro@8bytes.org>, <shameerali.kolothum.thodi@huawei.com>,
        <robin.murphy@arm.com>, <peterz@infradead.org>, <mingo@redhat.com>,
        <acme@kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <coresight@lists.linaro.org>, <linux-pci@vger.kernel.org>,
        <linux-perf-users@vger.kernel.org>,
        <iommu@lists.linux-foundation.org>
References: <20220221084307.33712-1-yangyicong@hisilicon.com>
 <20220221084307.33712-3-yangyicong@hisilicon.com>
 <c7d8cff4-b84e-1b73-1d54-2e221b90dac1@huawei.com>
 <e78f6e5e-a0c3-4976-4f46-e3369635ee3d@huawei.com>
 <aabd5f0a-1a54-e4da-734c-f940c45d66b4@huawei.com>
From:   Yicong Yang <yangyicong@huawei.com>
Message-ID: <a6fb3c8b-1b44-22e8-a178-ba7254a80662@huawei.com>
Date:   Thu, 24 Feb 2022 20:57:40 +0800
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On 2022/2/24 20:32, John Garry wrote:
> On 24/02/2022 03:53, Yicong Yang wrote:
>> On 2022/2/22 19:06, John Garry wrote:
>>> On 21/02/2022 08:43, Yicong Yang wrote:
>>>> HiSilicon PCIe tune and trace device(PTT) is a PCIe Root Complex
>>>> integrated Endpoint(RCiEP) device, providing the capability
>>>> to dynamically monitor and tune the PCIe traffic, and trace
>>>> the TLP headers.
>>>>
>>>> Add the driver for the device to enable the trace function.
>>>> This patch adds basic function of trace, including the device's
>>>> probe and initialization, functions for trace buffer allocation
>>>> and trace enable/disable, register an interrupt handler to
>>>> simply response to the DMA events. The user interface of trace
>>>> will be added in the following patch.
>>>>
>>>
>>> Fill commit message lines upto 75 characters
>>
>> Hi John,
>>
>> Thanks for the comments.
>>
>> The commit message is within 75 characters. I checked again and checkpatch
>> didn't warning for this.
> 
> I mean to fill the lines up as much as possible, upto 75 char max, if not already done so. I am not sure if you are doing this already, but it looks like you were not.
> 
> Checkpatch
> will
> no
> warn
> about
> a
> commit
> message
> like
> this
> :)
> 

Uh I got it. Thanks for the vivid clarification!