From patchwork Wed Oct 24 04:49:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Honnappa Nagarahalli X-Patchwork-Id: 149478 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp127854ljp; Tue, 23 Oct 2018 21:50:06 -0700 (PDT) X-Google-Smtp-Source: AJdET5fRinFgtf80FpR7McIMGWhNJuXJzlcofPpVxun8xRmSXxxc55h+i5ttzUzcwu2/UhWafGDj X-Received: by 2002:a1c:ed07:: with SMTP id l7-v6mr889300wmh.47.1540356606608; Tue, 23 Oct 2018 21:50:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1540356606; cv=none; d=google.com; s=arc-20160816; b=T3bl3JUlhpXS5Qw8Ihgsi28qLhQajTJUnh0WCk0BSdztV6Wppw45UgDVflCUXdLwb1 kYoVWK5zcQ06Jy5eglcqlMnbnDot3WVb7D/8bIk5AH5IzCIhDFBYeJEQq/As8WRKmp9a cMfwUUULoboTY0ITCAysMwO2rbGSihLYrkVHx/YqyAlh6SwDJOaiuFl7PzXFFQVmLMcL JHu1gxFhD83SKXn66rShSqSbXd0ESLTVqfeJwMG5j5VLRDPD1h2iYULej63vrEC/1cZ4 Liks2zy5grsEyUg2saqopUpvuURr1Ie7pq5K86Dy/wlGATmQFyjOSWbnMg9waoqAt2Yw OrmQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:subject:message-id:date:cc:to :from; bh=1sNPVDSh4ihZOOPMe9l7D1xDt8ZbXFq+AfS5N4gm34U=; b=y8GeZ9HqpLfG1xxoYZNSRgQHUm42zQ4yYIa+lbyyI6eFBtozMYm913u+/nBCmKP5wd F0uMyIlUh1BaT57B804SwjpfPI44vsTZaADe8yhGEBmYWKzSCAC1hN2uRRP4kfVDv/ON zedzZTfvy3rEf7ebbp2MoMJjthxgXAiz3z11X1dIV38gnDuP8SLlHIWI+py2pM5aoevw hP8Kb/0vaE94PDl6J/zVFw1gMqn+ey7SDhfGMp5RfMEmUJRnY91x080BaMnpoXdyiM4K k3cSFEhHnY1s307uVEPSo9CxwgmDNKVfZl0Gsi5FTY4uzjPjxR2nLoQpB0rn7HVoXa98 ElOw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of dev-bounces@dpdk.org designates 92.243.14.124 as permitted sender) smtp.mailfrom=dev-bounces@dpdk.org Return-Path: Received: from dpdk.org (dpdk.org. [92.243.14.124]) by mx.google.com with ESMTP id 193-v6si2929828wmu.136.2018.10.23.21.50.05; Tue, 23 Oct 2018 21:50:06 -0700 (PDT) Received-SPF: pass (google.com: domain of dev-bounces@dpdk.org designates 92.243.14.124 as permitted sender) client-ip=92.243.14.124; Authentication-Results: mx.google.com; spf=pass (google.com: domain of dev-bounces@dpdk.org designates 92.243.14.124 as permitted sender) smtp.mailfrom=dev-bounces@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 21B7A54AE; Wed, 24 Oct 2018 06:50:05 +0200 (CEST) Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by dpdk.org (Postfix) with ESMTP id 8C3724CC5 for ; Wed, 24 Oct 2018 06:50:03 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8311F341; Tue, 23 Oct 2018 21:50:02 -0700 (PDT) Received: from ubuntu.localdomain (unknown [10.119.49.16]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4D7943F5D3; Tue, 23 Oct 2018 21:50:01 -0700 (PDT) From: Honnappa Nagarahalli To: bruce.richardson@intel.com, pablo.de.lara.guarch@intel.com Cc: dev@dpdk.org, yipeng1.wang@intel.com, honnappa.nagarahalli@arm.com, gavin.hu@arm.com, dharmik.thakkar@arm.com, nd@arm.com Date: Tue, 23 Oct 2018 23:49:51 -0500 Message-Id: <1540356591-10745-1-git-send-email-honnappa.nagarahalli@arm.com> X-Mailer: git-send-email 2.7.4 Subject: [dpdk-dev] [PATCH] doc/rel-notes: lock-free RW concurrency in hash X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add lock-free reader/writer concurrency capability in rte_hash library to release notes. Signed-off-by: Honnappa Nagarahalli Reviewed-by: Gavin Hu --- doc/guides/rel_notes/release_18_11.rst | 5 +++++ 1 file changed, 5 insertions(+) -- 2.7.4 diff --git a/doc/guides/rel_notes/release_18_11.rst b/doc/guides/rel_notes/release_18_11.rst index 04f3745..2b3f23d 100644 --- a/doc/guides/rel_notes/release_18_11.rst +++ b/doc/guides/rel_notes/release_18_11.rst @@ -198,6 +198,11 @@ New Features this application doesn't need to launch dedicated worker threads for vhost enqueue/dequeue operations. +* **Add lock free reader/writer concurrency to hash library (rte_hash)** + + Lock free reader/writer concurrency prevents the readers from getting + blocked due to a pre-empted writer thread. This allows the hash library + to be used in scenarios where the writer thread runs on control plane. API Changes -----------