From: Stephen Hemminger <stephen@networkplumber.org>
To: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: dev@dpdk.org, shahafs@mellanox.com, yskoh@mellanox.com,
thomas@monjalon.net, shreyansh.jain@nxp.com
Subject: Re: [dpdk-dev] [PATCH v3 0/4] Allow using external memory without malloc
Date: Thu, 20 Dec 2018 08:16:46 -0800 [thread overview]
Message-ID: <20181220081646.55593779@xeon-e3> (raw)
In-Reply-To: <cover.1545319839.git.anatoly.burakov@intel.com>
On Thu, 20 Dec 2018 15:32:37 +0000
Anatoly Burakov <anatoly.burakov@intel.com> wrote:
> Currently, the only way to use externally allocated memory
> is through rte_malloc API's. While this is fine for a lot
> of use cases, it may not be suitable for certain other use
> cases like manual memory management, etc.
>
> This patchset adds another API to register memory segments
> with DPDK (so that API's like ``rte_mem_virt2memseg`` could
> be relied on by PMD's and such), but not create a malloc
> heap out of them.
>
> Aside from the obvious (not adding memory to a heap), the
> other major difference between this API and the
> ``rte_malloc_heap_*`` external memory functions is the fact
> that no DMA mapping is performed automatically, as well as
> no mem event callbacks are triggered.
>
> This really draws a line in the sand, and there are now two
> ways of doing things - do everything automatically (using
> the ``rte_malloc_heap_*`` API's), or do everything manually
> (``rte_extmem_*`` and future DMA mapping API [1] that would
> replace ``rte_vfio_dma_map``). This way, the consistency of
> API is kept, and flexibility is also allowed.
>
> [1] https://mails.dpdk.org/archives/dev/2018-November/118175.html
Where are the examples for this? Give a sample application maybe.
Also there are no test cases.
next prev parent reply other threads:[~2018-12-20 16:16 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-29 13:48 [dpdk-dev] [PATCH " Anatoly Burakov
2018-11-29 13:48 ` [dpdk-dev] [PATCH 1/4] malloc: separate creating memseg list and malloc heap Anatoly Burakov
2018-12-14 9:33 ` Yongseok Koh
2018-11-29 13:48 ` [dpdk-dev] [PATCH 2/4] malloc: separate destroying memseg list and heap data Anatoly Burakov
2018-12-14 9:34 ` Yongseok Koh
2018-11-29 13:48 ` [dpdk-dev] [PATCH 3/4] mem: allow registering external memory areas Anatoly Burakov
2018-12-14 9:55 ` Yongseok Koh
2018-12-14 11:03 ` Burakov, Anatoly
2018-11-29 13:48 ` [dpdk-dev] [PATCH 4/4] mem: allow usage of non-heap external memory in multiprocess Anatoly Burakov
2018-12-14 9:56 ` Yongseok Koh
2018-12-02 5:48 ` [dpdk-dev] [PATCH 0/4] Allow using external memory without malloc Shahaf Shuler
2018-12-02 23:28 ` Yongseok Koh
2018-12-03 10:23 ` Burakov, Anatoly
2018-12-12 12:55 ` Yongseok Koh
2018-12-12 13:17 ` Burakov, Anatoly
2018-12-14 11:50 ` [dpdk-dev] [PATCH v2 " Anatoly Burakov
2018-12-20 15:32 ` [dpdk-dev] [PATCH v3 " Anatoly Burakov
2018-12-20 16:16 ` Stephen Hemminger [this message]
2018-12-20 17:18 ` Thomas Monjalon
2018-12-21 9:17 ` Burakov, Anatoly
2018-12-20 17:17 ` Thomas Monjalon
2018-12-20 15:32 ` [dpdk-dev] [PATCH v3 1/4] malloc: separate creating memseg list and malloc heap Anatoly Burakov
2018-12-20 15:32 ` [dpdk-dev] [PATCH v3 2/4] malloc: separate destroying memseg list and heap data Anatoly Burakov
2018-12-20 15:32 ` [dpdk-dev] [PATCH v3 3/4] mem: allow registering external memory areas Anatoly Burakov
2018-12-20 15:32 ` [dpdk-dev] [PATCH v3 4/4] mem: allow usage of non-heap external memory in multiprocess Anatoly Burakov
2018-12-14 11:50 ` [dpdk-dev] [PATCH v2 1/4] malloc: separate creating memseg list and malloc heap Anatoly Burakov
2018-12-14 11:50 ` [dpdk-dev] [PATCH v2 2/4] malloc: separate destroying memseg list and heap data Anatoly Burakov
2018-12-14 11:50 ` [dpdk-dev] [PATCH v2 3/4] mem: allow registering external memory areas Anatoly Burakov
2018-12-14 11:50 ` [dpdk-dev] [PATCH v2 4/4] mem: allow usage of non-heap external memory in multiprocess Anatoly Burakov
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