From patchwork Mon Oct 15 12:53:11 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ed Czeck X-Patchwork-Id: 46832 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D0D492BDB; Mon, 15 Oct 2018 14:53:18 +0200 (CEST) Received: from mail-qt1-f195.google.com (mail-qt1-f195.google.com [209.85.160.195]) by dpdk.org (Postfix) with ESMTP id E3FA2B62 for ; Mon, 15 Oct 2018 14:53:17 +0200 (CEST) Received: by mail-qt1-f195.google.com with SMTP id q41-v6so21221766qtq.10 for ; Mon, 15 Oct 2018 05:53:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=atomicrules-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=YAa7+1Z7VNNhlD8Up+EbL/C85iXFWpRQhfbRh9L8R9M=; b=YbzaAUQlF9+wSUlwXa5xIIari6bFalOgPpuBhmlNHuEf5sG+ivFvSFLfPUYVNnXhyY ELiTcz5Tg+K2eXwsIIdITm3CNh57o6TFj+ZWng1DNYuMhPmRiyKlgAR4oiyvtws8Xsz3 v+pBYDHxbSkcYrZkT04f5m+6b9Fa8qkOUPWlnMATwf8QeoRdL1d1g2XtxTC7oQrsLHxV 50b97Owo3AVrZlxtnbiaHncMTPClQIl8gxRKDC/pSuDgY+qtP7Hj9WoRbL3xMajTfTvP ULS6IqwrYvlNu0MELKKlsNkIbUM0lSQZWzlTVhW0xVuFWpY7F9m3P5/YgtInO6otg0cS 6e4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=YAa7+1Z7VNNhlD8Up+EbL/C85iXFWpRQhfbRh9L8R9M=; b=td7IoK4dpZx5oDjL1DE7YGz2U5FoO5vjsGL5J9b6MkzEcHh+YoI/0YT8JRq4r+M5wG 9qsENcfPuQ5rScf1XDQaEqmS3BT36gQTI95Ff2kvmIvmON97wlpgnnCucU7IEJRXT91W BpbPlf7HQ1OQhmVmOeg/4ol99EXmdEw2UxtpvoZcW2RJNctezrFkgrNuB6lY3MaABBIT CY97yUYdRv7r2KpGS3Tiy3bul/Ugz/NWGhcZEbpeUTppdtG7OE448WdbW3kycx5lGLOS d+T/z6pLRtLgvmKotku52Z6N9xygpT1WWwg9ZCqpJG9aV1S5PWao1yHdQwk5fw74p1L3 C6fQ== X-Gm-Message-State: ABuFfoiPykM8jZJiVBiUQ40SvLl1NflucDHg5p4cTpb/79GVCYWNHFjT t/BZz1v4p5gpUiI5AAnhL02qOTAPq7mKog== X-Google-Smtp-Source: ACcGV60V+lQv43a0WVA8D/2muM/9yoP+QiwkcMjOA5tOj0Gy/1gywRB8662UUa4gIjc/pvrR0T+F0A== X-Received: by 2002:ac8:17f9:: with SMTP id r54-v6mr15763817qtk.206.1539607997033; Mon, 15 Oct 2018 05:53:17 -0700 (PDT) Received: from z170.home (pool-173-48-117-246.bstnma.fios.verizon.net. [173.48.117.246]) by smtp.gmail.com with ESMTPSA id h66-v6sm5550677qkc.53.2018.10.15.05.53.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 15 Oct 2018 05:53:16 -0700 (PDT) From: Ed Czeck To: dev@dpdk.org Cc: john.miller@atomicrules.com, shepard.siegel@atomicrules.com, ferruh.yigit@intel.com, Ed Czeck Date: Mon, 15 Oct 2018 08:53:11 -0400 Message-Id: <1539607991-21308-1-git-send-email-ed.czeck@atomicrules.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1539033410-21422-2-git-send-email-ed.czeck@atomicrules.com> References: <1539033410-21422-2-git-send-email-ed.czeck@atomicrules.com> Subject: [dpdk-dev] [PATCH v2 2/3] net/ark: remove useless hardware notifications 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" Only send notification to mpu when crossing 64 index boundary. Signed-off-by: Ed Czeck --- drivers/net/ark/ark_ethdev_rx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/ark/ark_ethdev_rx.c b/drivers/net/ark/ark_ethdev_rx.c index 5751585..300029d 100644 --- a/drivers/net/ark/ark_ethdev_rx.c +++ b/drivers/net/ark/ark_ethdev_rx.c @@ -53,7 +53,7 @@ struct ark_rx_queue { /* The queue Index is used within the dpdk device structures */ uint16_t queue_index; - uint32_t pad1; + uint32_t last_cons; /* separate cache line */ /* second cache line - fields only used in slow path */ @@ -105,7 +105,10 @@ eth_ark_rx_update_cons_index(struct ark_rx_queue *queue, uint32_t cons_index) { queue->cons_index = cons_index; eth_ark_rx_seed_mbufs(queue); - ark_mpu_set_producer(queue->mpu, queue->seed_index); + if (((cons_index - queue->last_cons) >= 64U)) { + queue->last_cons = cons_index; + ark_mpu_set_producer(queue->mpu, queue->seed_index); + } } /* ************************************************************************* */