From patchwork Thu May 14 16:01:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Senozhatsky X-Patchwork-Id: 11549213 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7DF9659D for ; Thu, 14 May 2020 16:03:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 642682065F for ; Thu, 14 May 2020 16:03:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gwQOAWBj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728163AbgENQDM (ORCPT ); Thu, 14 May 2020 12:03:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726037AbgENQDM (ORCPT ); Thu, 14 May 2020 12:03:12 -0400 Received: from mail-pl1-x642.google.com (mail-pl1-x642.google.com [IPv6:2607:f8b0:4864:20::642]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43AE6C061A0C; Thu, 14 May 2020 09:03:12 -0700 (PDT) Received: by mail-pl1-x642.google.com with SMTP id k19so1320118pll.9; Thu, 14 May 2020 09:03:12 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=PKtrJsIKIcsIj8dnmTqgxVou7+4jAhZAHReCNI0jtao=; b=gwQOAWBjWWnG2AqH5DTjNJpsC6zUy3MFzX7R/HV+gqZ9Mw6EKB0u6NVJpejG2oE4Jl AJ4JPtAdTbIpeXZweRWqujYuIzYPVuqgwyQQxpqg3LNZZ171mZ8MF6Gx2SxPW+QPP2YS dd/g3geG39A1JSj7LvHDyNzdY2/d2pOIa0GqCbnYAJk2/ueKmllM1gNUDr0fkIkpYq5A RKqRoXX4XxWMjXCZ4FX/mTpNMdm+FmxO+Qz4gbQC+WlQqh+Nd0TGgS9WYVXXbWAePP85 /nJt3ACtsBic2NPoodwQK8m7WhzOf3RAls4vUtEumomGpjt3xJjmHQSuxfhR0UNEZGD5 T5kQ== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=PKtrJsIKIcsIj8dnmTqgxVou7+4jAhZAHReCNI0jtao=; b=A1CdOF4v1PayP/Vis+ROAVKv9BrXy+zV1Tb+ZBlen2p/7Y7tCcmNAToLZRNit0noTl fOzK6C8wd83ffuDVF8rIfDnACozOOTHyjcmkgBjyLisXjOqT0xpUFGZzSmeE5kQIHmbf h6Yvk3udgLP2a2NlB2KQqEp+fqX8J1lXA7uS9wyfE30bKFn0sUhX3oeA7QG4R92zmXrc bDtZ0HsZkE1nMoY4c1bPoOHoka4NrUbFK4TlWsm3G/y346dslbx3HgnElcluZeejGn/P YGeRtPHodLpTk/DndLdviAO4/JYGAOv0cZ2MlA/aayFKZhnTgzoUcsDvdsBL5SnJat4U BT3A== X-Gm-Message-State: AGi0PuaEpembtH+OfrM4E/WfCdToKynHkBRj32Pw+wdr7A7T4Zc0xc6y MmMmjBkTCQV3MVIQMT0qUWs= X-Google-Smtp-Source: APiQypKtjDTYx4RCQAAj+mPgWBCzKNKzVXPOLmvMs9pUol75XZj27dlRosSZjo7iYkZI2ClGqel5bg== X-Received: by 2002:a17:90b:234e:: with SMTP id ms14mr41042651pjb.212.1589472191667; Thu, 14 May 2020 09:03:11 -0700 (PDT) Received: from localhost.localdomain ([2409:10:2e40:5100:6e29:95ff:fe2d:8f34]) by smtp.gmail.com with ESMTPSA id y6sm18178691pjw.15.2020.05.14.09.03.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 May 2020 09:03:11 -0700 (PDT) From: Sergey Senozhatsky To: Hans Verkuil Cc: Mauro Carvalho Chehab , Tomasz Figa , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky , Sergey Senozhatsky Subject: [PATCH v6 12/14] videobuf2: don't test db_attach in dma-contig prepare and finish Date: Fri, 15 May 2020 01:01:51 +0900 Message-Id: <20200514160153.3646-13-sergey.senozhatsky@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200514160153.3646-1-sergey.senozhatsky@gmail.com> References: <20200514160153.3646-1-sergey.senozhatsky@gmail.com> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Sergey Senozhatsky We moved cache management decision making to the upper layer and rely on buffer's need_cache_sync flags and videobuf2 core. If the upper layer (core) has decided to invoke ->prepare() or ->finish() then we must sync. For DMABUF ->need_cache_sync_on_prepare and ->need_cache_sync_on_flush are always false so videobuf core does not call ->prepare() and ->finish() on such buffers. Additionally, scratch the DMABUF comment. Signed-off-by: Sergey Senozhatsky --- drivers/media/common/videobuf2/videobuf2-dma-contig.c | 6 ++---- drivers/media/common/videobuf2/videobuf2-dma-sg.c | 8 -------- 2 files changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c index 6787e2cb905e..5a3e1c3b556f 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c @@ -100,8 +100,7 @@ static void vb2_dc_prepare(void *buf_priv) struct vb2_dc_buf *buf = buf_priv; struct sg_table *sgt = buf->dma_sgt; - /* DMABUF exporter will flush the cache for us */ - if (!sgt || buf->db_attach) + if (!sgt) return; dma_sync_sg_for_device(buf->dev, sgt->sgl, sgt->orig_nents, @@ -113,8 +112,7 @@ static void vb2_dc_finish(void *buf_priv) struct vb2_dc_buf *buf = buf_priv; struct sg_table *sgt = buf->dma_sgt; - /* DMABUF exporter will flush the cache for us */ - if (!sgt || buf->db_attach) + if (!sgt) return; dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir); diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c index 595137e358e7..0a40e00f0d7e 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c @@ -204,10 +204,6 @@ static void vb2_dma_sg_prepare(void *buf_priv) struct vb2_dma_sg_buf *buf = buf_priv; struct sg_table *sgt = buf->dma_sgt; - /* DMABUF exporter will flush the cache for us */ - if (buf->db_attach) - return; - dma_sync_sg_for_device(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir); } @@ -217,10 +213,6 @@ static void vb2_dma_sg_finish(void *buf_priv) struct vb2_dma_sg_buf *buf = buf_priv; struct sg_table *sgt = buf->dma_sgt; - /* DMABUF exporter will flush the cache for us */ - if (buf->db_attach) - return; - dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir); }