From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7F12DA054F for ; Mon, 5 Sep 2022 11:01:23 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7E4A642BA7; Mon, 5 Sep 2022 11:01:15 +0200 (CEST) Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by mails.dpdk.org (Postfix) with ESMTP id 3FD2642836; Mon, 5 Sep 2022 11:01:10 +0200 (CEST) Received: from kwepemi500017.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MLj9T0D6Wzbnch; Mon, 5 Sep 2022 16:58:37 +0800 (CST) Received: from localhost.localdomain (10.28.79.22) by kwepemi500017.china.huawei.com (7.221.188.110) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 5 Sep 2022 17:01:08 +0800 From: Dongdong Liu To: , , , , , , CC: , , , Subject: [PATCH RESEND 09/13] net/hns3: optimize SVE xmit performance Date: Mon, 5 Sep 2022 16:59:35 +0800 Message-ID: <20220905085939.22236-10-liudongdong3@huawei.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20220905085939.22236-1-liudongdong3@huawei.com> References: <20220905085939.22236-1-liudongdong3@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.28.79.22] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemi500017.china.huawei.com (7.221.188.110) X-CFilter-Loop: Reflected X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org From: Chengwen Feng This patch optimize SVE xmit algorithm performance, will get about 1%+ performance gain under 64B macfwd. Cc: stable@dpdk.org Signed-off-by: Chengwen Feng --- drivers/net/hns3/hns3_rxtx_vec_sve.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/net/hns3/hns3_rxtx_vec_sve.c b/drivers/net/hns3/hns3_rxtx_vec_sve.c index f09a81dbd5..6f23ba674d 100644 --- a/drivers/net/hns3/hns3_rxtx_vec_sve.c +++ b/drivers/net/hns3/hns3_rxtx_vec_sve.c @@ -389,10 +389,12 @@ hns3_tx_fill_hw_ring_sve(struct hns3_tx_queue *txq, HNS3_UINT32_BIT; svuint64_t base_addr, buf_iova, data_off, data_len, addr; svuint64_t offsets = svindex_u64(0, BD_SIZE); - uint32_t i = 0; - svbool_t pg = svwhilelt_b64_u32(i, nb_pkts); + uint32_t cnt = svcntd(); + svbool_t pg; + uint32_t i; - do { + for (i = 0; i < nb_pkts; /* i is updated in the inner loop */) { + pg = svwhilelt_b64_u32(i, nb_pkts); base_addr = svld1_u64(pg, (uint64_t *)pkts); /* calc mbuf's field buf_iova address */ buf_iova = svadd_n_u64_z(pg, base_addr, @@ -439,12 +441,11 @@ hns3_tx_fill_hw_ring_sve(struct hns3_tx_queue *txq, (svaddv_u64(pg, data_len) >> HNS3_UINT16_BIT); /* update index for next loop */ - i += svcntd(); - pkts += svcntd(); - txdp += svcntd(); - tx_entry += svcntd(); - pg = svwhilelt_b64_u32(i, nb_pkts); - } while (svptest_any(svptrue_b64(), pg)); + i += cnt; + pkts += cnt; + txdp += cnt; + tx_entry += cnt; + } } static uint16_t -- 2.22.0