From patchwork Thu Nov 3 20:40:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roesch X-Patchwork-Id: 13030992 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 42B5BC433FE for ; Thu, 3 Nov 2022 20:40:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230410AbiKCUkk (ORCPT ); Thu, 3 Nov 2022 16:40:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231312AbiKCUkh (ORCPT ); Thu, 3 Nov 2022 16:40:37 -0400 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 D3D4A1FCEC for ; Thu, 3 Nov 2022 13:40:36 -0700 (PDT) Received: by dev0134.prn3.facebook.com (Postfix, from userid 425415) id 52B2FC4F6B5; Thu, 3 Nov 2022 13:40:23 -0700 (PDT) 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 Subject: [RFC PATCH v1 1/3] liburing: add api to set napi busy poll timeout Date: Thu, 3 Nov 2022 13:40:15 -0700 Message-Id: <20221103204017.670757-2-shr@devkernel.io> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221103204017.670757-1-shr@devkernel.io> References: <20221103204017.670757-1-shr@devkernel.io> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This adds the two functions to register and unregister the napi busy poll timeout: - io_uring_register_busy_poll_timeout - io_uring_unregister_busy_poll_timeout Signed-off-by: Stefan Roesch --- src/include/liburing.h | 3 +++ src/include/liburing/io_uring.h | 4 ++++ src/register.c | 12 ++++++++++++ 3 files changed, 19 insertions(+) diff --git a/src/include/liburing.h b/src/include/liburing.h index 12a703f..ef2510e 100644 --- a/src/include/liburing.h +++ b/src/include/liburing.h @@ -235,6 +235,9 @@ int io_uring_register_sync_cancel(struct io_uring *ring, int io_uring_register_file_alloc_range(struct io_uring *ring, unsigned off, unsigned len); +int io_uring_register_busy_poll_timeout(struct io_uring *ring, unsigned int to); +int io_uring_unregister_busy_poll_timeout(struct io_uring *ring); + int io_uring_get_events(struct io_uring *ring); int io_uring_submit_and_get_events(struct io_uring *ring); diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h index a3e0920..0919d9e 100644 --- a/src/include/liburing/io_uring.h +++ b/src/include/liburing/io_uring.h @@ -499,6 +499,10 @@ enum { /* register a range of fixed file slots for automatic slot allocation */ IORING_REGISTER_FILE_ALLOC_RANGE = 25, + /* set/clear busy poll timeout */ + IORING_REGISTER_NAPI_BUSY_POLL_TIMEOUT = 26, + IORING_UNREGISTER_NAPI_BUSY_POLL_TIMEOUT= 27, + /* this goes last */ IORING_REGISTER_LAST }; diff --git a/src/register.c b/src/register.c index e849825..c18e072 100644 --- a/src/register.c +++ b/src/register.c @@ -367,3 +367,15 @@ int io_uring_register_file_alloc_range(struct io_uring *ring, IORING_REGISTER_FILE_ALLOC_RANGE, &range, 0); } + +int io_uring_register_busy_poll_timeout(struct io_uring *ring, unsigned int to) +{ + return __sys_io_uring_register(ring->ring_fd, + IORING_REGISTER_NAPI_BUSY_POLL_TIMEOUT, NULL, to); +} + +int io_uring_unregister_busy_poll_timeout(struct io_uring *ring) +{ + return __sys_io_uring_register(ring->ring_fd, + IORING_UNREGISTER_NAPI_BUSY_POLL_TIMEOUT, NULL, 0); +}