From patchwork Wed Jun 8 01:16:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Lew X-Patchwork-Id: 12872821 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 2DF95C433EF for ; Wed, 8 Jun 2022 04:52:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230128AbiFHEwJ (ORCPT ); Wed, 8 Jun 2022 00:52:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232032AbiFHEv2 (ORCPT ); Wed, 8 Jun 2022 00:51:28 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D1FFA27144D; Tue, 7 Jun 2022 18:17:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654651029; x=1686187029; h=from:to:cc:subject:date:message-id:mime-version; bh=ygwHZANy7H7v2wYM6erWiH+LMWYVUEK2GJZZRAhv6Hs=; b=OBhhX70wi4Ui25JX6ImVLOVdtr/T3JuNcNuW4mZMNflR6BVJpDlZI0qJ E9wdet1IQsX+InZNpjNq2zPxG5H7k3b9x4I+dTTtBBDcj3lPsey2b01Q2 yNFOudDwoJmmYnwdxmZ6Kyt36yYnEPw171+HZ+mSHSm2uOgaHEsDqzxuw k=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 07 Jun 2022 18:17:07 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2022 18:17:07 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 7 Jun 2022 18:17:07 -0700 Received: from hu-clew-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 7 Jun 2022 18:17:06 -0700 From: Chris Lew To: , CC: , , , Subject: [PATCH 0/4] Introduction of rpmsg_rx_done Date: Tue, 7 Jun 2022 18:16:41 -0700 Message-ID: <1654651005-15475-1-git-send-email-quic_clew@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This series proposes an implementation for the rpmsg framework to do deferred cleanup of buffers provided in the rx callback. The current implementation assumes that the client is done with the buffer after returning from the rx callback. In some cases where the data size is large, the client may want to avoid copying the data in the rx callback for later processing. This series proposes two new facilities for signaling that they want to hold on to a buffer after the rx callback. They are: - New API rpmsg_rx_done() to tell the rpmsg framework the client is done with the buffer - New return codes for the rx callback to signal that the client will hold onto a buffer and later call rpmsg_rx_done() This series implements the qcom_glink_native backend for these new facilities. Chris Lew (4): rpmsg: core: Add rx done hooks rpmsg: char: Add support to use rpmsg_rx_done rpmsg: glink: Try to send rx done in irq rpmsg: glink: Add support for rpmsg_rx_done drivers/rpmsg/qcom_glink_native.c | 112 ++++++++++++++++++++++++++++++-------- drivers/rpmsg/rpmsg_char.c | 50 ++++++++++++++++- drivers/rpmsg/rpmsg_core.c | 20 +++++++ drivers/rpmsg/rpmsg_internal.h | 1 + include/linux/rpmsg.h | 24 ++++++++ 5 files changed, 183 insertions(+), 24 deletions(-)