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

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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.
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[PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
  [PATCH 13/13] ARM: mvebu: enable buffer manager support on Armada XP boards Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
  [PATCH 04/13] net: mvneta: enable suspend/resume support Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
    Re: [PATCH 04/13] net: mvneta: enable suspend/resume support Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-25 19:40 +0100
      Re: [PATCH 04/13] net: mvneta: enable suspend/resume support Marcin Wojtas <mw@semihalf.com> - 2015-11-26 18:40 +0100
  [PATCH 12/13] ARM: mvebu: add buffer manager nodes to armada-xp.dtsi Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
  [PATCH 01/13] net: mvneta: add configuration for MBUS windows access protection Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
    Re: [PATCH 01/13] net: mvneta: add configuration for MBUS windows access protection Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-25 19:20 +0100
  [PATCH 11/13] ARM: mvebu: enable buffer manager support on Armada 38x boards Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
  [PATCH 07/13] bus: mvebu-mbus: provide api for obtaining IO and DRAM window information Marcin Wojtas <mw@semihalf.com> - 2015-11-22 09:00 +0100
    Re: [PATCH 07/13] bus: mvebu-mbus: provide api for obtaining IO and DRAM window information Arnd Bergmann <arnd@arndb.de> - 2015-11-22 21:10 +0100
      Re: [PATCH 07/13] bus: mvebu-mbus: provide api for obtaining IO and  DRAM window information Marcin Wojtas <mw@semihalf.com> - 2015-11-22 22:30 +0100
        Re: [PATCH 07/13] bus: mvebu-mbus: provide api for obtaining IO and DRAM window information Arnd Bergmann <arnd@arndb.de> - 2015-11-23 18:00 +0100
  Re: [PATCH 00/13] mvneta Buffer Management and enhancements Arnd Bergmann <arnd@arndb.de> - 2015-11-22 21:10 +0100
    Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-11-22 22:40 +0100
  Re: [PATCH 00/13] mvneta Buffer Management and enhancements David Miller <davem@davemloft.net> - 2015-11-24 17:30 +0100
    Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-11-24 17:50 +0100
  Re: [PATCH 00/13] mvneta Buffer Management and enhancements Florian Fainelli <f.fainelli@gmail.com> - 2015-11-25 19:40 +0100
    Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-11-29 14:30 +0100
      Re: [PATCH 00/13] mvneta Buffer Management and enhancements David Miller <davem@davemloft.net> - 2015-11-30 03:10 +0100
        Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-11-30 15:20 +0100
          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
  Re: [PATCH 00/13] mvneta Buffer Management and enhancements Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-11-30 18:20 +0100
    Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-11-30 21:00 +0100
      Re: [PATCH 00/13] mvneta Buffer Management and enhancements Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-12-01 14:20 +0100
        Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-12-01 22:50 +0100
          Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-12-02 00:40 +0100
            Re: [PATCH 00/13] mvneta Buffer Management and enhancements Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-12-02 11:50 +0100
              Re: [PATCH 00/13] mvneta Buffer Management and enhancements Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-12-02 17:30 +0100
                Re: [PATCH 00/13] mvneta Buffer Management and enhancements Marcin Wojtas <mw@semihalf.com> - 2015-12-02 23:20 +0100
                Re: [PATCH 00/13] mvneta Buffer Management and enhancements Gregory CLEMENT <gregory.clement@free-electrons.com> - 2015-12-03 00:00 +0100

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