From patchwork Mon Nov 7 17:53:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roesch X-Patchwork-Id: 13035007 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF09AC433FE for ; Mon, 7 Nov 2022 17:56:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232124AbiKGR40 (ORCPT ); Mon, 7 Nov 2022 12:56:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58428 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232460AbiKGRzI (ORCPT ); Mon, 7 Nov 2022 12:55:08 -0500 Received: from 66-220-144-178.mail-mxout.facebook.com (66-220-144-178.mail-mxout.facebook.com [66.220.144.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1E3024BCF for ; Mon, 7 Nov 2022 09:54:18 -0800 (PST) Received: by dev0134.prn3.facebook.com (Postfix, from userid 425415) id A68E4F6B962; Mon, 7 Nov 2022 09:54:04 -0800 (PST) From: Stefan Roesch To: kernel-team@fb.com Cc: shr@devkernel.io, axboe@kernel.dk, olivier@trillion01.com, netdev@vger.kernel.org, io-uring@vger.kernel.org, kuba@kernel.org, ammarfaizi2@gnuweeb.org Subject: [RFC PATCH v2 0/4] liburing: add api for napi busy poll timeout Date: Mon, 7 Nov 2022 09:53:53 -0800 Message-Id: <20221107175357.2733763-1-shr@devkernel.io> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This adds two new api's to set and clear the napi busy poll timeout. The two new functions are called: - io_uring_register_busy_poll_timeout and - io_uring_unregister_busy_poll_timeout. The patch series also contains the documentation for the two new functions and two test programs. The client program is called napi-busy-poll-client and the server program napi-busy-poll-server. The client measures the roundtrip times of requests. There is also a kernel patch "io-uring: support napi busy poll" to enable this feature on the kernel side. Changes: - V2: - Updated the liburing.map file for the two new functions. (added a 2.4 section) - Added a description of the new feature to the changelog file - Fixed the indentation of the longopts structure - Used defined exit constants - Fixed encodeUserData to support 32 bit builds Signed-off-by: Stefan Roesch Stefan Roesch (4): liburing: add api to set napi busy poll timeout liburing: add documentation for new napi busy polling liburing: add test programs for napi busy poll liburing: update changelog with new feature CHANGELOG | 3 + man/io_uring_register_napi.3 | 35 +++ man/io_uring_unregister_napi.3 | 26 ++ src/include/liburing.h | 4 + src/include/liburing/io_uring.h | 4 + src/liburing.map | 8 + src/register.c | 15 ++ test/Makefile | 2 + test/napi-busy-poll-client.c | 422 ++++++++++++++++++++++++++++++++ test/napi-busy-poll-server.c | 372 ++++++++++++++++++++++++++++ 10 files changed, 891 insertions(+) create mode 100644 man/io_uring_register_napi.3 create mode 100644 man/io_uring_unregister_napi.3 create mode 100644 test/napi-busy-poll-client.c create mode 100644 test/napi-busy-poll-server.c base-commit: 754bc068ec482c5338a07dd74b7d3892729bb847