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{
    "id": 91100,
    "url": "http://patches.dpdk.org/api/patches/91100/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/20210412082901.652736-1-kda@semihalf.com/",
    "project": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
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    "msgid": "<20210412082901.652736-1-kda@semihalf.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20210412082901.652736-1-kda@semihalf.com",
    "date": "2021-04-12T08:28:58",
    "name": "[0/3] add lock-free stack support discovery",
    "commit_ref": null,
    "pull_url": null,
    "state": null,
    "archived": false,
    "hash": null,
    "submitter": {
        "id": 2179,
        "url": "http://patches.dpdk.org/api/people/2179/?format=api",
        "name": "Stanislaw Kardach",
        "email": "kda@semihalf.com"
    },
    "delegate": null,
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/20210412082901.652736-1-kda@semihalf.com/mbox/",
    "series": [],
    "comments": "http://patches.dpdk.org/api/patches/91100/comments/",
    "check": "pending",
    "checks": "http://patches.dpdk.org/api/patches/91100/checks/",
    "tags": {},
    "related": [],
    "headers": {
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        "X-Received": "by 2002:a19:3804:: with SMTP id f4mr19061374lfa.117.1618216168942;\n Mon, 12 Apr 2021 01:29:28 -0700 (PDT)",
        "From": "Stanislaw Kardach <kda@semihalf.com>",
        "To": "Olivier Matz <olivier.matz@6wind.com>",
        "Cc": "dev@dpdk.org,\n\tStanislaw Kardach <kda@semihalf.com>,\n\tstable@dpdk.org",
        "Date": "Mon, 12 Apr 2021 10:28:58 +0200",
        "Message-Id": "<20210412082901.652736-1-kda@semihalf.com>",
        "X-Mailer": "git-send-email 2.27.0",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[dpdk-dev] [PATCH 0/3] add lock-free stack support discovery",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
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        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "The lock-free stack implementation (RTE_STACK_F_LF) is supported only on a\nsubset of platforms, namely x86_64 and arm64. Platforms supporting 128b atomics\nhave to opt-in to a generic or C11 implementations. All other platforms use a\nstubbed implementation for push/pop operations which are basically NOPs.\nHowever rte_stack_create() will not fail and application can proceed assuming\nit has a working lock-free stack.\n\nThis means that among other things the stack_lf fast and perf tests will fail\nas if implementation is wrong (which one can argue is). Therefore this patchset\ntries to give user a way to check whether a lock_free is supported or not both\nat compile time (build flag) and at runtime (ENOTSUP errno in rte_stack_create).\n\nI have added cc to stable@dpdk.org because check-git-log.sh suggested it. I'm\nnot sure if adding a binary compatible change to API is worth stable@dpdk.org.\n\nCc: stable@dpdk.org\n\nStanislaw Kardach (3):\n  stack: update lock-free supported archs\n  stack: add compile flag for lock-free support\n  test: run lock-free stack tests when supported\n\n app/test/test_stack.c                  | 4 ++++\n app/test/test_stack_perf.c             | 4 ++++\n doc/guides/rel_notes/release_21_05.rst | 4 ++++\n lib/librte_stack/rte_stack.c           | 4 +++-\n lib/librte_stack/rte_stack.h           | 3 ++-\n lib/librte_stack/rte_stack_lf.h        | 5 +++++\n 6 files changed, 22 insertions(+), 2 deletions(-)",
    "diff": null,
    "prefixes": [
        "0/3"
    ]
}