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GET /api/patches/1195/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 1195,
    "url": "https://patches.dpdk.org/api/patches/1195/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/1415358037-424-1-git-send-email-marc.sune@bisdn.de/",
    "project": {
        "id": 1,
        "url": "https://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",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<1415358037-424-1-git-send-email-marc.sune@bisdn.de>",
    "list_archive_url": "https://inbox.dpdk.org/dev/1415358037-424-1-git-send-email-marc.sune@bisdn.de",
    "date": "2014-11-07T11:00:37",
    "name": "[dpdk-dev] Adding RTE_KNI_PREEMPT configuration option",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "054751530df1189f238198f1bdadbb9b6f751b7a",
    "submitter": {
        "id": 83,
        "url": "https://patches.dpdk.org/api/people/83/?format=api",
        "name": "Marc Sune",
        "email": "marc.sune@bisdn.de"
    },
    "delegate": null,
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/1415358037-424-1-git-send-email-marc.sune@bisdn.de/mbox/",
    "series": [],
    "comments": "https://patches.dpdk.org/api/patches/1195/comments/",
    "check": "pending",
    "checks": "https://patches.dpdk.org/api/patches/1195/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id 67EF07EC4;\n\tFri,  7 Nov 2014 11:52:22 +0100 (CET)",
            "from mx.bisdn.de (mx.bisdn.de [185.27.182.31])\n\tby dpdk.org (Postfix) with ESMTP id 3C4F3590B\n\tfor <dev@dpdk.org>; Fri,  7 Nov 2014 11:52:03 +0100 (CET)",
            "from localhost.localdomain (unknown [172.16.251.36])\n\tby mx.bisdn.de (Postfix) with ESMTP id EA93FA09C5;\n\tFri,  7 Nov 2014 12:01:32 +0100 (CET)"
        ],
        "From": "Marc Sune <marc.sune@bisdn.de>",
        "To": "dev@dpdk.org",
        "Date": "Fri,  7 Nov 2014 12:00:37 +0100",
        "Message-Id": "<1415358037-424-1-git-send-email-marc.sune@bisdn.de>",
        "X-Mailer": "git-send-email 1.7.10.4",
        "Subject": "[dpdk-dev] [PATCH] Adding RTE_KNI_PREEMPT configuration option",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "patches and discussions about DPDK <dev.dpdk.org>",
        "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Archive": "<http://dpdk.org/ml/archives/dev/>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "This patch introduces CONFIG_RTE_KNI_PREEMPT flag. When set to 'no', KNI\nkernel thread(s) do not call schedule_timeout_interruptible(), which improves\noverall KNI performance at the expense of CPU cycles (polling).\n\nDefault values is 'yes', maintaining the same behaviour as of now.\n\nSigned-off-by: Marc Sune <marc.sune@bisdn.de>\n---\n config/common_linuxapp                 |    1 +\n lib/librte_eal/linuxapp/kni/kni_misc.c |    4 ++++\n 2 files changed, 5 insertions(+)",
    "diff": "diff --git a/config/common_linuxapp b/config/common_linuxapp\nindex 57b61c9..24b529d 100644\n--- a/config/common_linuxapp\n+++ b/config/common_linuxapp\n@@ -380,6 +380,7 @@ CONFIG_RTE_LIBRTE_PIPELINE=y\n # Compile librte_kni\n #\n CONFIG_RTE_LIBRTE_KNI=y\n+CONFIG_RTE_KNI_PREEMPT=y\n CONFIG_RTE_KNI_KO_DEBUG=n\n CONFIG_RTE_KNI_VHOST=n\n CONFIG_RTE_KNI_VHOST_MAX_CACHE_SIZE=1024\ndiff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c b/lib/librte_eal/linuxapp/kni/kni_misc.c\nindex ba77776..e7e6c27 100644\n--- a/lib/librte_eal/linuxapp/kni/kni_misc.c\n+++ b/lib/librte_eal/linuxapp/kni/kni_misc.c\n@@ -229,9 +229,11 @@ kni_thread_single(void *unused)\n \t\t\t}\n \t\t}\n \t\tup_read(&kni_list_lock);\n+#ifdef RTE_KNI_PREEMPT\n \t\t/* reschedule out for a while */\n \t\tschedule_timeout_interruptible(usecs_to_jiffies( \\\n \t\t\t\tKNI_KTHREAD_RESCHEDULE_INTERVAL));\n+#endif\n \t}\n \n \treturn 0;\n@@ -252,8 +254,10 @@ kni_thread_multiple(void *param)\n #endif\n \t\t\tkni_net_poll_resp(dev);\n \t\t}\n+#ifdef RTE_KNI_PREEMPT\n \t\tschedule_timeout_interruptible(usecs_to_jiffies( \\\n \t\t\t\tKNI_KTHREAD_RESCHEDULE_INTERVAL));\n+#endif\n \t}\n \n \treturn 0;\n",
    "prefixes": [
        "dpdk-dev"
    ]
}