From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id B7DF8A04F1; Mon, 13 Jan 2020 18:25:38 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 16C631C439; Mon, 13 Jan 2020 18:25:38 +0100 (CET) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by dpdk.org (Postfix) with ESMTP id 13C7F1C300 for ; Mon, 13 Jan 2020 18:25:37 +0100 (CET) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 666E511B3; Mon, 13 Jan 2020 09:25:36 -0800 (PST) Received: from qc2400f-1.austin.arm.com (qc2400f-1.austin.arm.com [10.118.14.48]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5B2873F534; Mon, 13 Jan 2020 09:25:36 -0800 (PST) From: Honnappa Nagarahalli To: olivier.matz@6wind.com, sthemmin@microsoft.com, jerinj@marvell.com, bruce.richardson@intel.com, david.marchand@redhat.com, pbhagavatula@marvell.com, konstantin.ananyev@intel.com, honnappa.nagarahalli@arm.com Cc: dev@dpdk.org, dharmik.thakkar@arm.com, ruifeng.wang@arm.com, gavin.hu@arm.com, nd@arm.com Date: Mon, 13 Jan 2020 11:25:12 -0600 Message-Id: <20200113172518.37815-1-honnappa.nagarahalli@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190906190510.11146-1-honnappa.nagarahalli@arm.com> References: <20190906190510.11146-1-honnappa.nagarahalli@arm.com> Subject: [dpdk-dev] [PATCH v8 0/6] lib/ring: APIs to support custom element size 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" The current rte_ring hard-codes the type of the ring element to 'void *', hence the size of the element is hard-coded to 32b/64b. Since the ring element type is not an input to rte_ring APIs, it results in couple of issues: 1) If an application requires to store an element which is not 64b, it needs to write its own ring APIs similar to rte_event_ring APIs. This creates additional burden on the programmers, who end up making work-arounds and often waste memory. 2) If there are multiple libraries that store elements of the same type, currently they would have to write their own rte_ring APIs. This results in code duplication. This patch adds new APIs to support configurable ring element size. The APIs support custom element sizes by allowing to define the ring element to be a multiple of 32b. The aim is to achieve same performance as the existing ring implementation. v8 - Changed the 128b copy elements inline function to use 'memcpy' to generate unaligned load/store instructions for x86. Generic copy function results in performance drop. (Konstantin) - Changed the API type #defines to be more clear (Konstantin) - Removed the code duplication in performance tests (Konstantin) - Fixed memory leak, changed test macros to inline functions (Konstantin) - Changed functional tests to test for 20B ring element. Fixed a bug in 32b element copy code for enqueue/dequeue(ring size needs to be normalized for 32b). - Squashed the functional and performance tests in their respective single commits. v7 - Merged the test cases to test both legacy APIs and rte_ring_xxx_elem APIs without code duplication (Konstantin, Olivier) - Performance test cases are merged as well (Konstantin, Olivier) - Macros to copy elements are converted into inline functions (Olivier) - Added back the changes to hash and event libraries v6 - Labelled as RFC to indicate the better status - Added unit tests to test the rte_ring_xxx_elem APIs - Corrected 'macro based partial memcpy' (5/6) patch - Added Konstantin's method after correction (6/6) - Check Patch shows significant warnings and errors mainly due copying code from existing test cases. None of them are harmful. I will fix them once we have an agreement. v5 - Use memcpy for chunks of 32B (Konstantin). - Both 'ring_perf_autotest' and 'ring_perf_elem_autotest' are available to compare the results easily. - Copying without memcpy is also available in 1/3, if anyone wants to experiment on their platform. - Added other platform owners to test on their respective platforms. v4 - Few fixes after more performance testing v3 - Removed macro-fest and used inline functions (Stephen, Bruce) v2 - Change Event Ring implementation to use ring templates (Jerin, Pavan) Honnappa Nagarahalli (6): test/ring: use division for cycle count calculation lib/ring: apis to support configurable element size test/ring: add functional tests for rte_ring_xxx_elem APIs test/ring: modify perf test cases to use rte_ring_xxx_elem APIs lib/hash: use ring with 32b element size to save memory lib/eventdev: use custom element size ring for event rings app/test/test_ring.c | 1244 +++++++++++--------------- app/test/test_ring.h | 187 ++++ app/test/test_ring_perf.c | 452 ++++++---- lib/librte_eventdev/rte_event_ring.c | 147 +-- lib/librte_eventdev/rte_event_ring.h | 45 +- lib/librte_hash/rte_cuckoo_hash.c | 97 +- lib/librte_hash/rte_cuckoo_hash.h | 2 +- lib/librte_ring/Makefile | 3 +- lib/librte_ring/meson.build | 4 + lib/librte_ring/rte_ring.c | 41 +- lib/librte_ring/rte_ring.h | 1 + lib/librte_ring/rte_ring_elem.h | 1003 +++++++++++++++++++++ lib/librte_ring/rte_ring_version.map | 2 + 13 files changed, 2115 insertions(+), 1113 deletions(-) create mode 100644 app/test/test_ring.h create mode 100644 lib/librte_ring/rte_ring_elem.h -- 2.17.1