From: David Miller <davem@redhat.com>
To: mw@semihalf.com
Cc: f.fainelli@gmail.com, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org,
thomas.petazzoni@free-electrons.com, andrew@lunn.ch,
linux@arm.linux.org.uk, jason@lakedaemon.net, myair@marvell.com,
jaz@semihalf.com, simon.guinot@sequanux.org, xswang@marvell.com,
nadavh@marvell.com, alior@marvell.com, tn@semihalf.com,
gregory.clement@free-electrons.com, nitroshift@yahoo.com,
sebastian.hesselbarth@gmail.com
Subject: Re: [PATCH 00/13] mvneta Buffer Management and enhancements
Date: Mon, 30 Nov 2015 11:25:00 -0500 (EST) [thread overview]
Message-ID: <20151130.112500.293198684175670933.davem@redhat.com> (raw)
In-Reply-To: <CAPv3WKcHnJHCvg63Vs79RboNOuESU8jCLouKPRW4NdptAd_hag@mail.gmail.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.
next prev parent reply other threads:[~2015-11-30 16:25 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-22 7:53 Marcin Wojtas
2015-11-22 7:53 ` [PATCH 01/13] net: mvneta: add configuration for MBUS windows access protection Marcin Wojtas
2015-11-25 18:19 ` Gregory CLEMENT
2015-11-22 7:53 ` [PATCH 02/13] net: mvneta: enable IP checksum with jumbo frames for Armada 38x on Port0 Marcin Wojtas
2015-11-22 20:00 ` Arnd Bergmann
2015-11-22 21:04 ` Marcin Wojtas
2015-11-22 21:32 ` Arnd Bergmann
2015-11-22 21:55 ` Marcin Wojtas
2015-11-22 7:53 ` [PATCH 03/13] net: mvneta: fix bit assignment in MVNETA_RXQ_CONFIG_REG Marcin Wojtas
2015-11-25 18:25 ` Gregory CLEMENT
2015-11-22 7:53 ` [PATCH 04/13] net: mvneta: enable suspend/resume support Marcin Wojtas
2015-11-25 18:35 ` Gregory CLEMENT
2015-11-26 17:39 ` Marcin Wojtas
2015-11-22 7:53 ` [PATCH 05/13] net: mvneta: add xmit_more support Marcin Wojtas
2015-11-22 7:53 ` [PATCH 06/13] net: mvneta: enable mixed egress processing using HR timer Marcin Wojtas
2015-11-26 16:45 ` Simon Guinot
2015-11-30 15:57 ` Marcin Wojtas
2015-12-02 10:03 ` Marcin Wojtas
2015-11-22 7:53 ` [PATCH 07/13] bus: mvebu-mbus: provide api for obtaining IO and DRAM window information Marcin Wojtas
2015-11-22 20:02 ` Arnd Bergmann
2015-11-22 21:24 ` Marcin Wojtas
2015-11-23 16:58 ` Arnd Bergmann
2015-11-22 7:53 ` [PATCH 08/13] ARM: mvebu: enable SRAM support in mvebu_v7_defconfig Marcin Wojtas
2016-02-16 10:51 ` Gregory CLEMENT
2015-11-22 7:53 ` [PATCH 09/13] net: mvneta: bm: add support for hardware buffer management Marcin Wojtas
2015-11-22 7:53 ` [PATCH 10/13] ARM: mvebu: add buffer manager nodes to armada-38x.dtsi Marcin Wojtas
2015-11-22 9:41 ` Sergei Shtylyov
2015-11-22 7:53 ` [PATCH 11/13] ARM: mvebu: enable buffer manager support on Armada 38x boards Marcin Wojtas
2015-11-22 7:53 ` [PATCH 12/13] ARM: mvebu: add buffer manager nodes to armada-xp.dtsi Marcin Wojtas
2015-11-22 7:53 ` [PATCH 13/13] ARM: mvebu: enable buffer manager support on Armada XP boards Marcin Wojtas
2015-11-22 20:06 ` [PATCH 00/13] mvneta Buffer Management and enhancements Arnd Bergmann
2015-11-22 21:37 ` Marcin Wojtas
2015-11-24 16:22 ` David Miller
2015-11-24 16:47 ` Marcin Wojtas
2015-11-25 18:34 ` Florian Fainelli
2015-11-29 13:21 ` Marcin Wojtas
2015-11-30 2:02 ` David Miller
2015-11-30 14:13 ` Marcin Wojtas
2015-11-30 16:25 ` David Miller [this message]
2015-12-02 8:26 ` Marcin Wojtas
2015-12-04 20:15 ` Florian Fainelli
2015-12-08 10:56 ` Marcin Wojtas
2015-12-08 16:57 ` David Miller
2015-11-30 17:16 ` Gregory CLEMENT
2015-11-30 19:53 ` Marcin Wojtas
2015-12-01 13:12 ` Gregory CLEMENT
2015-12-01 21:40 ` Marcin Wojtas
2015-12-01 23:34 ` Marcin Wojtas
2015-12-02 10:40 ` Gregory CLEMENT
2015-12-02 16:21 ` Gregory CLEMENT
2015-12-02 22:15 ` Marcin Wojtas
2015-12-02 22:56 ` Gregory CLEMENT
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