From patchwork Fri Jan 31 12:50:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavan Nikhilesh Bhagavatula X-Patchwork-Id: 65430 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 81987A0524; Fri, 31 Jan 2020 13:51:07 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A067F1C0C3; Fri, 31 Jan 2020 13:51:06 +0100 (CET) Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by dpdk.org (Postfix) with ESMTP id E72D11C0C2 for ; Fri, 31 Jan 2020 13:51:04 +0100 (CET) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00VClkTB027044 for ; Fri, 31 Jan 2020 04:51:04 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=pfpt0818; bh=BIV8CcAy98XaXDbrW4gy0Crk/i5fevFclxJUKH0MyyM=; b=RxRBsI8NzbEXiYhszuTQOlcCkNfwEfO/WoGMUot0Ezpz5ZiJZDmJ2xh1YhVmlV79Yf4Z 3F3RE0W+jvuIBovkDvrhOLNfr5o+kFJk5/a0PRrX+VoPx3pt5do55vVyAUTWzIPu795h cI+4ekm3PKYtbo+n1XbEsG6GNZT6XQA9saVP6aYpCtD8TXi+We3L6DECHdk+9sEDuiV1 4PSuD+45IynghCHP9skqDmz8DU4SakSI+U1PuPAYuAlyXdYPerrhKTDe757A+N9KfJXh 6JEcR8MvNU2VkR48SOjumwfLDRJ+ZhlCYhdGxPwSnMGh+CDf973IA5jEwjMthLDFowTm rg== Received: from sc-exch04.marvell.com ([199.233.58.184]) by mx0b-0016f401.pphosted.com with ESMTP id 2xrp2tkhuk-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Fri, 31 Jan 2020 04:51:04 -0800 Received: from SC-EXCH03.marvell.com (10.93.176.83) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 31 Jan 2020 04:51:02 -0800 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 31 Jan 2020 04:51:02 -0800 Received: from BG-LT7430.marvell.com (unknown [10.28.17.67]) by maili.marvell.com (Postfix) with ESMTP id 22CF73F703F; Fri, 31 Jan 2020 04:51:00 -0800 (PST) From: To: Jerin Jacob , Nithin Dabilpuram , Vamsi Attunuru CC: , Pavan Nikhilesh Date: Fri, 31 Jan 2020 18:20:58 +0530 Message-ID: <20200131125059.1556-1-pbhagavatula@marvell.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-01-31_03:2020-01-31, 2020-01-31 signatures=0 Subject: [dpdk-dev] [PATCH] mempool/octeontx2: optimize for L1D cache architecture 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" From: Pavan Nikhilesh OCTEON TX2 has 8 sets, 41 ways L1D cache, VA<9:7> bits dictate the set selection. Add additional padding to ensure that the element size always occupies odd number of cachelines to ensure even distribution of elements among L1D cache sets. Signed-off-by: Pavan Nikhilesh Signed-off-by: Nithin Dabilpuram Signed-off-by: Vamsi Attunuru Signed-off-by: Jerin Jacob --- drivers/mempool/octeontx2/otx2_mempool_ops.c | 41 ++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/mempool/octeontx2/otx2_mempool_ops.c b/drivers/mempool/octeontx2/otx2_mempool_ops.c index ea4b1c45d..bd71babdb 100644 --- a/drivers/mempool/octeontx2/otx2_mempool_ops.c +++ b/drivers/mempool/octeontx2/otx2_mempool_ops.c @@ -641,6 +641,7 @@ otx2_npa_alloc(struct rte_mempool *mp) struct npa_aura_s aura; struct npa_pool_s pool; uint64_t aura_handle; + size_t padding; int rc; lf = otx2_npa_lf_obj_get(); @@ -650,6 +651,18 @@ otx2_npa_alloc(struct rte_mempool *mp) } block_size = mp->elt_size + mp->header_size + mp->trailer_size; + /* + * OCTEON TX2 has 8 sets, 41 ways L1D cache, VA<9:7> bits dictate + * the set selection. + * Add additional padding to ensure that the element size always + * occupies odd number of cachelines to ensure even distribution + * of elements among L1D cache sets. + */ + padding = ((block_size / RTE_CACHE_LINE_SIZE) % 2) ? 0 : + RTE_CACHE_LINE_SIZE; + mp->trailer_size += padding; + block_size += padding; + block_count = mp->size; if (block_size % OTX2_ALIGN != 0) { @@ -724,12 +737,22 @@ otx2_npa_calc_mem_size(const struct rte_mempool *mp, uint32_t obj_num, align); } +static uint8_t +otx2_npa_l1d_way_set_get(uint64_t iova) +{ + return (iova >> rte_log2_u32(RTE_CACHE_LINE_SIZE)) & 0x7; +} + static int otx2_npa_populate(struct rte_mempool *mp, unsigned int max_objs, void *vaddr, rte_iova_t iova, size_t len, rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg) { +#define OTX2_L1D_NB_SETS 8 + uint64_t distribution[OTX2_L1D_NB_SETS]; + rte_iova_t start_iova; size_t total_elt_sz; + uint8_t set; size_t off; if (iova == RTE_BAD_IOVA) @@ -743,10 +766,28 @@ otx2_npa_populate(struct rte_mempool *mp, unsigned int max_objs, void *vaddr, if (len < off) return -EINVAL; + vaddr = (char *)vaddr + off; iova += off; len -= off; + memset(distribution, 0, sizeof(uint64_t) * OTX2_L1D_NB_SETS); + start_iova = iova; + while (start_iova < iova + len) { + set = otx2_npa_l1d_way_set_get(start_iova + mp->header_size); + distribution[set]++; + start_iova += total_elt_sz; + } + + otx2_npa_dbg("iova %lx, aligned iova %lx", iova - off, iova); + otx2_npa_dbg("length %ld, aligned length %ld", len + off, len); + otx2_npa_dbg("element size %ld", total_elt_sz); + otx2_npa_dbg("requested objects %d, possible objects %ld", max_objs, + len / total_elt_sz); + otx2_npa_dbg("L1D set distribution :"); + for (int i = 0; i < OTX2_L1D_NB_SETS; i++) + otx2_npa_dbg("set[%d] : objects : %ld", i, distribution[i]); + npa_lf_aura_op_range_set(mp->pool_id, iova, iova + len); if (npa_lf_aura_range_update_check(mp->pool_id) < 0)