From patchwork Tue Oct 13 19:45:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Willem de Bruijn X-Patchwork-Id: 11836089 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,TVD_PH_BODY_META_ALL,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF205C433E7 for ; Tue, 13 Oct 2020 19:45:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7915420BED for ; Tue, 13 Oct 2020 19:45:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DXUphNut" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729983AbgJMTpN (ORCPT ); Tue, 13 Oct 2020 15:45:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726552AbgJMTpN (ORCPT ); Tue, 13 Oct 2020 15:45:13 -0400 Received: from mail-io1-xd41.google.com (mail-io1-xd41.google.com [IPv6:2607:f8b0:4864:20::d41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F454C0613D0 for ; Tue, 13 Oct 2020 12:45:12 -0700 (PDT) Received: by mail-io1-xd41.google.com with SMTP id q9so1190695iow.6 for ; Tue, 13 Oct 2020 12:45:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Bm16GqpOD7Ki4zZQHCFjSyawqd78XJGBOczoXTgkkiI=; b=DXUphNutlOoT+5dJOxIPxWL+8g49E5OI4SfAs2WZyuNcerSowKkPCXVNkz7AvfGwcQ AvipuJ7EoD6+c9s0Veh74eeHfvx8WBFDj1R+u8R/bD2FL6ilOWNtB0C98k6lT5OQ+AtP cDpm07zBjmeAtuaCAvHQfs2nNIlq33kC09RDwjxPG6o4D3HxfHjiBzG376wQ3YSlF2Av lJ93P1iQL/M0pddAdMfK7NAA+bVxx2W1cvxMNzptX9wnxuGKJxqjqpfjpijM9KLK3Kgo M+fhRfJqRPjFh7WRiE4bfHoykTp1u5foeH+Q1qgZnTynDx4noZ+yzWOUSceWzn4o1kQi I32Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Bm16GqpOD7Ki4zZQHCFjSyawqd78XJGBOczoXTgkkiI=; b=Gw7pAb0873aU26NP283pqcyPjdXGjfJKRUHaV3AInpCkpwCRlgozkbiTn9PwHcyPQq eH/pLpSpKsCcPLlZhZII5BX/uS4M9BxlzqdxeiqB9+kX0wP74VxhSdbAW469r3ivYcrQ B7A/RskSUa0Bapvi/hY5MDSsC42gYm0gLzMgqcrLsUDvJd6vg6/y3VdDCGn+D/J5+Lds Sq+VPfq9Y/X0BHO7jDXRn5s7Bp6G5SbMR8fFQKXs4reByrDsQoHa6TkT4FQr/1de5AZh 8vaFNE3j+sOtHHKDtiFOsJfwwETtOv2VbqafLYispeokAoDN185YrBWBR73AptL7p5Q9 Zjtg== X-Gm-Message-State: AOAM531FbU9TjadWSG4Xvk9L+Lsj9a8XjkYaBHa27aWY+X+fRsgFZsFJ KrAPH2aCThpZ26/uf29NmyPWs2yRrRA= X-Google-Smtp-Source: ABdhPJwouXACGC8aAisgQWWdAr7/BqE9uKzKdRmP+GLCLsWqhmqsALG7QCgd11N/MkFP/KnUHsfjPQ== X-Received: by 2002:a5e:9e42:: with SMTP id j2mr327048ioq.87.1602618311570; Tue, 13 Oct 2020 12:45:11 -0700 (PDT) Received: from willemb.nyc.corp.google.com ([2620:0:1003:312:f693:9fff:fef4:3e8a]) by smtp.gmail.com with ESMTPSA id b3sm677595iot.37.2020.10.13.12.45.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Oct 2020 12:45:10 -0700 (PDT) From: Willem de Bruijn To: netdev@vger.kernel.org Cc: davem@davemloft.net, Willem de Bruijn Subject: [PATCH net] docs: networking: update XPS to account for netif_set_xps_queue Date: Tue, 13 Oct 2020 15:45:08 -0400 Message-Id: <20201013194508.389495-1-willemdebruijn.kernel@gmail.com> X-Mailer: git-send-email 2.28.0.1011.ga647a8990f-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Willem de Bruijn With the introduction of netif_set_xps_queue, XPS can be enabled by the driver at initialization. Update the documentation to reflect this, as otherwise users may incorrectly believe that the feature is off by default. Fixes: 537c00de1c9b ("net: Add functions netif_reset_xps_queue and netif_set_xps_queue") Signed-off-by: Willem de Bruijn --- Documentation/networking/scaling.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/networking/scaling.rst b/Documentation/networking/scaling.rst index 8f0347b9fb3d..3d435caa3ef2 100644 --- a/Documentation/networking/scaling.rst +++ b/Documentation/networking/scaling.rst @@ -465,9 +465,9 @@ XPS Configuration ----------------- XPS is only available if the kconfig symbol CONFIG_XPS is enabled (on by -default for SMP). The functionality remains disabled until explicitly -configured. To enable XPS, the bitmap of CPUs/receive-queues that may -use a transmit queue is configured using the sysfs file entry: +default for SMP). If compiled in, it is driver dependent whether, and +how, XPS is configured at device init. The mapping of CPUs/receive-queues +to transmit queue can be inspected and configured using sysfs: For selection based on CPUs map::