dev.dpdk.org archive mirror
 help / color / mirror / Atom feed
From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: jerinjacobk@gmail.com, bruce.richardson@intel.com, mdr@ashroe.eu,
	ktraynor@redhat.com, ian.stokes@intel.com, i.maximets@ovn.org
Subject: [dpdk-dev] [PATCH v3 0/9] Register non-EAL threads as lcore
Date: Mon, 22 Jun 2020 15:25:22 +0200	[thread overview]
Message-ID: <20200622132531.21857-1-david.marchand@redhat.com> (raw)
In-Reply-To: <20200610144506.30505-1-david.marchand@redhat.com>

OVS and some other applications have been hacking into DPDK internals to
fake EAL threads and avoid performance penalty of only having non-EAL
threads.

This series proposes to add a new type of lcores and maps those threads
to such lcores.
non-EAL threads won't run the DPDK eal mainloop.
As a consequence, part of the EAL threads API cannot work.

Having new lcores appearing during the process lifetime is not expected
by some DPDK components. This is addressed by introducing init/uninit
callacks invoked when hotplugging of such lcore.

There is still some work/discussion:
- refuse new lcore role in incompatible EAL threads API (or document it
  only as those API were already incompatible?),
- think about deprecation notices for existing RTE_FOREACH_LCORE macros
  and consorts, it is probably worth discussing on how to iterate over
  lcores,

For the interested parties, I have a patch [1] against dpdk-latest OVS
branch that makes use of this series.

1: https://github.com/david-marchand/ovs/commit/dpdk-latest-external-lcores

Changes since v2:
- fixed windows build error due to missing trace stub,
- fixed bug when rolling back on lcore register,

Changes since v1:
- rebased on master (conflicts on merged Windows series),
- separated lcore role code cleanup in a patch,
- tried to use a single naming, so kept non-EAL threads as the main
  notion. non-EAL threads are then distinguished between registered and
  unregistered non-EAL threads,
- added unit tests (still missing some coverage, marked with a FIXME),
- reworked callbacks call under a common rwlock lock which protects
  lcores allocations and callbacks registration,
- introduced lcore iterators and converted the bucket mempool driver,

-- 
David Marchand

David Marchand (9):
  eal: relocate per thread symbols to common
  eal: fix multiple definition of per lcore thread id
  eal: introduce thread init helper
  eal: introduce thread uninit helper
  eal: move lcore role code
  eal: register non-EAL threads as lcores
  eal: add lcore init callbacks
  eal: add lcore iterators
  mempool/bucket: handle non-EAL lcores

 MAINTAINERS                                   |   1 +
 app/test/Makefile                             |   1 +
 app/test/autotest_data.py                     |   6 +
 app/test/meson.build                          |   2 +
 app/test/test_lcores.c                        | 372 ++++++++++++++++++
 doc/guides/howto/debug_troubleshoot.rst       |   5 +-
 .../prog_guide/env_abstraction_layer.rst      |  22 +-
 doc/guides/prog_guide/mempool_lib.rst         |   2 +-
 drivers/mempool/bucket/rte_mempool_bucket.c   | 131 +++---
 lib/librte_eal/common/eal_common_lcore.c      | 240 ++++++++++-
 lib/librte_eal/common/eal_common_thread.c     | 126 ++++--
 lib/librte_eal/common/eal_common_trace.c      |  51 ++-
 lib/librte_eal/common/eal_private.h           |  19 +
 lib/librte_eal/common/eal_thread.h            |  26 +-
 lib/librte_eal/common/eal_trace.h             |   2 +-
 lib/librte_eal/freebsd/eal.c                  |  16 +-
 lib/librte_eal/freebsd/eal_thread.c           |  38 +-
 lib/librte_eal/include/rte_eal.h              |  12 +-
 lib/librte_eal/include/rte_lcore.h            | 167 +++++++-
 lib/librte_eal/include/rte_trace_point.h      |   9 +
 lib/librte_eal/linux/eal.c                    |  17 +-
 lib/librte_eal/linux/eal_thread.c             |  38 +-
 lib/librte_eal/rte_eal_version.map            |  16 +
 lib/librte_eal/windows/eal.c                  |   8 +-
 lib/librte_eal/windows/eal_thread.c           |  14 +-
 lib/librte_mempool/rte_mempool.h              |  11 +-
 26 files changed, 1113 insertions(+), 239 deletions(-)
 create mode 100644 app/test/test_lcores.c

-- 
2.23.0


  parent reply	other threads:[~2020-06-22 13:25 UTC|newest]

Thread overview: 133+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-10 14:44 [dpdk-dev] [PATCH 0/7] Register external threads as lcore David Marchand
2020-06-10 14:45 ` [dpdk-dev] [PATCH 1/7] eal: relocate per thread symbols to common David Marchand
2020-06-10 14:45 ` [dpdk-dev] [PATCH 2/7] eal: fix multiple definition of per lcore thread id David Marchand
2020-06-15  6:46   ` Kinsella, Ray
2020-06-10 14:45 ` [dpdk-dev] [PATCH 3/7] eal: introduce thread init helper David Marchand
2020-06-10 14:45 ` [dpdk-dev] [PATCH 4/7] eal: introduce thread uninit helper David Marchand
2020-06-10 14:45 ` [dpdk-dev] [PATCH 5/7] eal: register non-EAL threads as lcore David Marchand
2020-06-15  6:43   ` Kinsella, Ray
2020-06-10 14:45 ` [dpdk-dev] [PATCH 6/7] eal: dump lcores David Marchand
2020-06-15  6:40   ` Kinsella, Ray
2020-06-10 14:45 ` [dpdk-dev] [PATCH 7/7] eal: add lcore hotplug notifications David Marchand
2020-06-15  6:34   ` Kinsella, Ray
2020-06-15  7:13     ` David Marchand
2020-06-10 15:09 ` [dpdk-dev] [PATCH 0/7] Register external threads as lcore Jerin Jacob
2020-06-10 15:13   ` Bruce Richardson
2020-06-10 15:18   ` David Marchand
2020-06-10 15:33     ` Jerin Jacob
2020-06-15  7:11       ` David Marchand
2020-06-19 16:22 ` [dpdk-dev] [PATCH v2 0/9] Register non-EAL " David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 1/9] eal: relocate per thread symbols to common David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 2/9] eal: fix multiple definition of per lcore thread id David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 3/9] eal: introduce thread init helper David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 4/9] eal: introduce thread uninit helper David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 5/9] eal: move lcore role code David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 6/9] eal: register non-EAL threads as lcores David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 7/9] eal: add lcore init callbacks David Marchand
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 8/9] eal: add lcore iterators David Marchand
2020-06-20  2:21     ` Stephen Hemminger
2020-06-19 16:22   ` [dpdk-dev] [PATCH v2 9/9] mempool/bucket: handle non-EAL lcores David Marchand
2020-06-22 13:25 ` David Marchand [this message]
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 1/9] eal: relocate per thread symbols to common David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 2/9] eal: fix multiple definition of per lcore thread id David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 3/9] eal: introduce thread init helper David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 4/9] eal: introduce thread uninit helper David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 5/9] eal: move lcore role code David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 6/9] eal: register non-EAL threads as lcores David Marchand
2020-06-22 15:49     ` Ananyev, Konstantin
2020-06-22 16:37       ` Ananyev, Konstantin
2020-06-23  7:49       ` David Marchand
2020-06-23  9:14         ` Bruce Richardson
2020-06-23 12:49           ` David Marchand
2020-06-23 13:15         ` Ananyev, Konstantin
2020-06-24  9:23           ` David Marchand
2020-06-24  9:56             ` Bruce Richardson
2020-06-24 10:08               ` Thomas Monjalon
2020-06-24 10:45                 ` Ananyev, Konstantin
2020-06-24 10:39             ` Ananyev, Konstantin
2020-06-24 10:48               ` David Marchand
2020-06-24 11:59                 ` Ananyev, Konstantin
2020-06-26 14:43                   ` David Marchand
2020-06-30 10:35                     ` Thomas Monjalon
2020-06-30 12:07                       ` Ananyev, Konstantin
2020-06-30 12:44                         ` Olivier Matz
2020-06-30 14:37                           ` Thomas Monjalon
2020-06-30 19:02                           ` Ananyev, Konstantin
2020-06-30 14:35                         ` Thomas Monjalon
2020-06-30 18:57                           ` Ananyev, Konstantin
2020-07-01  7:48                             ` David Marchand
2020-07-01 11:58                               ` Ananyev, Konstantin
2020-07-02 13:06                                 ` David Marchand
2020-07-03 15:15                                   ` Thomas Monjalon
2020-07-03 16:40                                   ` Ananyev, Konstantin
2020-07-04 15:00                                     ` David Marchand
2020-07-04 21:24                                       ` Ananyev, Konstantin
2020-06-23 17:02     ` Andrew Rybchenko
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 7/9] eal: add lcore init callbacks David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 8/9] eal: add lcore iterators David Marchand
2020-06-22 13:25   ` [dpdk-dev] [PATCH v3 9/9] mempool/bucket: handle non-EAL lcores David Marchand
2020-06-23 17:28     ` Andrew Rybchenko
2020-06-26 14:13       ` David Marchand
2020-06-26 14:34         ` Andrew Rybchenko
2020-06-26 14:47 ` [dpdk-dev] [PATCH v4 0/9] Register non-EAL threads as lcore David Marchand
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 1/9] eal: relocate per thread symbols to common David Marchand
2020-06-30  9:33     ` Olivier Matz
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 2/9] eal: fix multiple definition of per lcore thread id David Marchand
2020-06-30  9:34     ` Olivier Matz
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 3/9] eal: introduce thread init helper David Marchand
2020-06-30  9:37     ` Olivier Matz
2020-06-30 12:04       ` David Marchand
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 4/9] eal: introduce thread uninit helper David Marchand
2020-06-26 15:00     ` Jerin Jacob
2020-06-29  9:07       ` David Marchand
2020-06-29  8:59     ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-06-29  9:25       ` David Marchand
2020-06-30  9:42     ` [dpdk-dev] " Olivier Matz
2020-07-01  8:00       ` David Marchand
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 5/9] eal: move lcore role code David Marchand
2020-06-30  9:45     ` Olivier Matz
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 6/9] eal: register non-EAL threads as lcores David Marchand
2020-06-29 14:27     ` Ananyev, Konstantin
2020-06-30 10:07     ` Olivier Matz
2020-07-01  7:13       ` David Marchand
2020-07-01  9:11         ` Olivier Matz
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 7/9] eal: add lcore init callbacks David Marchand
2020-06-29 12:46     ` Ananyev, Konstantin
2020-06-30 10:09     ` Olivier Matz
2020-06-30 10:15     ` Olivier Matz
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 8/9] eal: add lcore iterators David Marchand
2020-06-30 10:11     ` Olivier Matz
2020-06-26 14:47   ` [dpdk-dev] [PATCH v4 9/9] mempool/bucket: handle non-EAL lcores David Marchand
2020-06-26 14:52     ` Andrew Rybchenko
2020-07-06 14:15 ` [dpdk-dev] [PATCH v5 00/10] Register non-EAL threads as lcore David Marchand
2020-07-06 14:15   ` [dpdk-dev] [PATCH v5 01/10] eal: relocate per thread symbols to common David Marchand
2020-07-06 14:15   ` [dpdk-dev] [PATCH v5 02/10] eal: fix multiple definition of per lcore thread id David Marchand
2020-07-06 14:15   ` [dpdk-dev] [PATCH v5 03/10] eal: introduce thread init helper David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 04/10] eal: introduce thread uninit helper David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 05/10] eal: move lcore role code David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 06/10] eal: register non-EAL threads as lcores David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 07/10] eal: add lcore init callbacks David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 08/10] eal: add lcore iterators David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 09/10] mempool/bucket: handle non-EAL lcores David Marchand
2020-07-06 14:16   ` [dpdk-dev] [PATCH v5 10/10] eal: add multiprocess disable API David Marchand
2020-07-06 20:52 ` [dpdk-dev] [PATCH v6 00/10] Register non-EAL threads as lcore David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 01/10] eal: relocate per thread symbols to common David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 02/10] eal: fix multiple definition of per lcore thread id David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 03/10] eal: introduce thread init helper David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 04/10] eal: introduce thread uninit helper David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 05/10] eal: move lcore role code David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 06/10] eal: register non-EAL threads as lcores David Marchand
2022-11-03  9:02     ` Morten Brørup
2022-11-03 10:15       ` Thomas Monjalon
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 07/10] eal: add lcore init callbacks David Marchand
2022-12-15  9:05     ` Morten Brørup
2022-12-15  9:09       ` David Marchand
2022-12-15 10:21         ` Morten Brørup
2022-12-16  8:09           ` David Marchand
2022-12-16  9:55             ` Morten Brørup
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 08/10] eal: add lcore iterators David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 09/10] mempool/bucket: handle non-EAL lcores David Marchand
2020-07-06 20:52   ` [dpdk-dev] [PATCH v6 10/10] eal: add multiprocess disable API David Marchand
2020-07-06 23:22   ` [dpdk-dev] [PATCH v6 00/10] Register non-EAL threads as lcore Ananyev, Konstantin
2020-07-08 13:05     ` David Marchand
2020-07-08 13:06   ` David Marchand

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200622132531.21857-1-david.marchand@redhat.com \
    --to=david.marchand@redhat.com \
    --cc=bruce.richardson@intel.com \
    --cc=dev@dpdk.org \
    --cc=i.maximets@ovn.org \
    --cc=ian.stokes@intel.com \
    --cc=jerinjacobk@gmail.com \
    --cc=ktraynor@redhat.com \
    --cc=mdr@ashroe.eu \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).