linux-kernel - Re: [PATCH 03/16] ntb: Enable link training for RP mode in the driver probe

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Date:	Thu, 21 May 2015 07:06:10 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	"Hubbe, Allen" <Allen.Hubbe@....com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Jon Mason <jdmason@...zu.us>, Dave Jiang <dave.jiang@...el.com>
Subject: Re: [PATCH 03/16] ntb: Enable link training for RP mode in the driver probe

On Wed, May 20, 2015 at 6:00 PM, Hubbe, Allen <Allen.Hubbe@....com> wrote:
> From: Bjorn Helgaas [mailto:bhelgaas@...gle.com]
>> On Wed, May 20, 2015 at 4:46 PM, Hubbe, Allen <Allen.Hubbe@....com>
>> wrote:
>> > From: Bjorn Helgaas [mailto:bhelgaas@...gle.com]
>> >> Please run "git log --oneline drivers/ntb" and make your subject
>> lines
>> >> consistent.  The convention I use in PCI (and what was used in NTB
>> >> until recently) is
>> >>
>> >>   - Acronyms and initialisms are capitalized
>> >>   - Subject line is a subsystem prefix ("PCI:", "NTB:", etc.)
>> followed
>> >> by a complete sentence starting with a capitalized verb, with no
>> >> period at the end
>> >
>> > These are the new subject lines that will be in the v2 of this set.
>>
>> That helps a lot, thanks.
>>
>> > NTB: Fix small code format issues in transport
>> > NTB: Default to CPU memcpy for performance
>> > NTB: Improve performance with write combining
>> > NTB: Use NUMA aware memory allocation
>> > NTB: Use NUMA memory and DMA chan in transport
>> > NTB: Reset transport QP link stats on down
>> > NTB: Do not advance transport RX on link down
>> > NTB: Differentiate transport link down messages
>> > NTB: Rate limit ntb_qp_link_work
>> > NTB: Add tool client
>> > NTB: Add ping pong client
>>
>> I think these are test cases, not part of the kernel itself.  It'd be
>> nice to know that from the summary.  I don't know what the precedent
>> is for that (if there is one).
>
> Would you consider this as precedent:
>
> 4a776f0 dmatest: Simple DMA memcpy test client
>
>>
>> > NTB: Intel NTB params for SNB B2B addresses
>>
>> This sentence no verb :)  Not sure what you're doing with those params.
>
> NTB: Add parameters for Intel SNB B2B addresses
>
>>
>> > NTB: Check the DID for workaround error flags
>>
>> I think there's room to spell out "device ID".
>
> NTB: Check the device ID to set errata flags
>
> Also, add this prose description to this commit:
>
> Set errata flags for the specific device IDs to which they apply,
> instead of the whole xeon hardware class.
>
>>
>> > NTB: Enable link training for RP mode in probe
>>
>> Is that Root Port?
>
> yes
>
>>
>> > NTB: Add NTB hardware abstraction layer
>> > NTB: Move files in preparation for NTB abstraction

All looks good to me!
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