Re: [PATCH 00/13] mvneta Buffer Management and enhancements

From	Marcin Wojtas <mw@semihalf.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 00/13] mvneta Buffer Management and enhancements
Date	2015-12-02 09:30 +0100
Message-ID	<qBaXv-4EG-5@gated-at.bofh.it> (permalink)
References	<qAadd-6Gq-23@gated-at.bofh.it> <qAm4G-5Jv-7@gated-at.bofh.it> <qAxt8-4HX-9@gated-at.bofh.it> <qAzuX-5YC-41@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Hi Florian,

Can you please describe in more details, what would you expect from
such special abstraction layer regarding buffer managers? I'd like to
understand more of your expectations and evaluate possible work.

Best regards,
Marcin

2015-11-30 17:25 GMT+01:00 David Miller <davem@redhat.com>:
> From: Marcin Wojtas <mw@semihalf.com>
> Date: Mon, 30 Nov 2015 15:13:22 +0100
>
>> What kind of abstraction and helpers do you mean? Some kind of API
>> (e.g. bm_alloc_buffer, bm_initialize_ring bm_put_buffer,
>> bm_get_buffer), which would be used by platform drivers (and specific
>> aplications if one wants to develop on top of the kernel)?
>>
>> In general, what is your top-view of such solution and its cooperation
>> with the drivers?
>
> The tricky parts involved have to do with allocating pages for the
> buffer pools and minimizing the number of atomic refcounting
> operations on those pages for for the puts and gets, particularly
> around buffer replenish runs.
>
> For example, if you're allocating a page for a buffer pool the device
> will chop into N (for any N < PAGE_SIZE) byte pieces, you can
> eliminate many atomic operations.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Thread

Re: [PATCH 00/13] mvneta Buffer Management and enhancements David Miller <davem@redhat.com> - 2015-11-30 17:30 +0100
  Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-12-02 09:30 +0100
    Re: [PATCH 00/13] mvneta Buffer Management and enhancements Florian Fainelli <f.fainelli@gmail.com> - 2015-12-04 21:20 +0100
      Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-12-08 12:00 +0100
        Re: [PATCH 00/13] mvneta Buffer Management and enhancements David Miller <davem@davemloft.net> - 2015-12-08 18:00 +0100

csiph-web