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* [dpdk-dev] [PATCH 0/4] Allow using external memory without malloc
@ 2018-11-29 13:48 Anatoly Burakov
  2018-11-29 13:48 ` [dpdk-dev] [PATCH 1/4] malloc: separate creating memseg list and malloc heap Anatoly Burakov
                   ` (9 more replies)
  0 siblings, 10 replies; 29+ messages in thread
From: Anatoly Burakov @ 2018-11-29 13:48 UTC (permalink / raw)
  To: dev; +Cc: shahafs, yskoh, thomas, shreyansh.jain

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.

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

Note: at the time of this writing, there's no release notes
      template, so no release notes updates in this patchset.
      They will be added in later revisions.

Anatoly Burakov (4):
  malloc: separate creating memseg list and malloc heap
  malloc: separate destroying memseg list and heap data
  mem: allow registering external memory areas
  mem: allow usage of non-heap external memory in multiprocess

 .../prog_guide/env_abstraction_layer.rst      |  63 +++++++--
 lib/librte_eal/common/eal_common_memory.c     | 116 +++++++++++++++++
 lib/librte_eal/common/include/rte_memory.h    | 122 ++++++++++++++++++
 lib/librte_eal/common/malloc_heap.c           | 104 +++++++++++----
 lib/librte_eal/common/malloc_heap.h           |  15 ++-
 lib/librte_eal/common/rte_malloc.c            | 115 +++++++----------
 lib/librte_eal/rte_eal_version.map            |   4 +
 7 files changed, 434 insertions(+), 105 deletions(-)

-- 
2.17.1

^ permalink raw reply	[flat|nested] 29+ messages in thread

end of thread, other threads:[~2018-12-21  9:17 UTC | newest]

Thread overview: 29+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-11-29 13:48 [dpdk-dev] [PATCH 0/4] Allow using external memory without malloc 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
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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