From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 2259EC433E2 for ; Mon, 29 Jun 2020 19:02:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EC5B020663 for ; Mon, 29 Jun 2020 19:02:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="jWJmLvGH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730532AbgF2TCn (ORCPT ); Mon, 29 Jun 2020 15:02:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730509AbgF2TCm (ORCPT ); Mon, 29 Jun 2020 15:02:42 -0400 Received: from casper.infradead.org (unknown [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88C2FC02A552; Mon, 29 Jun 2020 06:04:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=hCeEFPJauELL9pZELwR8NI9hO7+eRck24vlEYcHykOI=; b=jWJmLvGHLCXZqD+9nHGBpk8RJJ tZEw3mH374vZSArhHhnpGf3fzMx6xn+4T+ORiEdT5+4lPhWyDdnz3JjTZh9/3Wtck2vqFScH/9G/J u4LVSP/cj9xTJk4Ckay1YCcJrlSpYpCPwix/DUpDcxoNbuscvo6HKYUYw09OpXMQGOUG1UPKk5h1R I3eShOTEfFGU9Ja0KzA7j41GBHdpp5HO/DOzw6cKjpixzfNV8H9j71Gb6OnIfIM/OBDTmJC5gUL61 YFnCpxS9+nbGCj3YwQd7bAh3L87CfMsmO+LuaXEzqneInL6n6Nzaas0SsF/W9iCpEmQP30CE7l3I7 yMgYzDrw==; Received: from [2001:4bb8:184:76e3:c71:f334:376b:cf5f] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jptS5-0004Wr-LR; Mon, 29 Jun 2020 13:04:02 +0000 From: Christoph Hellwig To: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= Cc: Magnus Karlsson , Jonathan Lemon , iommu@lists.linux-foundation.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: add an API to check if a streamming mapping needs sync calls Date: Mon, 29 Jun 2020 15:03:55 +0200 Message-Id: <20200629130359.2690853-1-hch@lst.de> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi all, this series lifts the somewhat hacky checks in the XSK code if a DMA streaming mapping needs dma_sync_single_for_{device,cpu} calls to the DMA API. Diffstat: Documentation/core-api/dma-api.rst | 8 +++++ include/linux/dma-direct.h | 1 include/linux/dma-mapping.h | 5 +++ include/net/xsk_buff_pool.h | 6 ++-- kernel/dma/direct.c | 6 ++++ kernel/dma/mapping.c | 10 ++++++ net/xdp/xsk_buff_pool.c | 54 ++----------------------------------- 7 files changed, 37 insertions(+), 53 deletions(-)