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Wed, 03 Apr 2024 02:13:13 -0700 (PDT) Received: from yunkec1.tok.corp.google.com ([2401:fa00:8f:203:d5be:b59a:f5f7:246d]) by smtp.gmail.com with ESMTPSA id lo14-20020a170903434e00b001e0aded0ca7sm12692811plb.239.2024.04.03.02.13.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Apr 2024 02:13:12 -0700 (PDT) From: Yunke Cao To: Tomasz Figa , Marek Szyprowski , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, Yunke Cao Subject: [PATCH v2 0/3] media: videobuf2-core: attach once if multiple planes share the same dbuf Date: Wed, 3 Apr 2024 18:13:03 +0900 Message-ID: <20240403091306.1308878-1-yunkec@chromium.org> X-Mailer: git-send-email 2.44.0.478.gd926399ef9-goog Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi, This patch set avoids attaching and mapping a dma_buf multiple times when several planes in one vb2 buffer share the same dma_buf. 1/3 and 2/3 refactors __prepare_dmabuf() 3/3 adds a flag to avoid duplicated attaching Changelog since v1: - Add patch 1/3 to refactor __prepare_dmabuf() - Add patch 2/3 to resolve Tomasz's comment on __vb2_buf_dmabuf_put()'s iteration order - Fix mem_priv in patch 3/3 - Rename duplicated_dbuf to dbuf_duplicated Yunke Cao (3): media: videobuf2-core: release all planes first in __prepare_dmabuf() media: videobuf2-core: reverse the iteration order in __vb2_buf_dmabuf_put media: videobuf2-core: attach once if multiple planes share the same dbuf .../media/common/videobuf2/videobuf2-core.c | 97 +++++++++++-------- include/media/videobuf2-core.h | 3 + 2 files changed, 62 insertions(+), 38 deletions(-)