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Wed, 05 Jun 2024 00:40:40 -0700 (PDT) From: Yunke Cao <yunkec@chromium.org> To: Tomasz Figa <tfiga@chromium.org>, Marek Szyprowski <m.szyprowski@samsung.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Hans Verkuil <hverkuil@xs4all.nl> Cc: linux-media@vger.kernel.org, Yunke Cao <yunkec@chromium.org> Subject: [PATCH v3 0/4] media: videobuf2-core: attach once if multiple planes share the same dbuf Date: Wed, 5 Jun 2024 16:40:31 +0900 Message-ID: <20240605074035.2620140-1-yunkec@chromium.org> X-Mailer: git-send-email 2.45.1.288.g0e0cd299f1-goog Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: <linux-media.vger.kernel.org> List-Subscribe: <mailto:linux-media+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-media+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-LSpam-Score: -3.6 (---) X-LSpam-Report: No, score=-3.6 required=5.0 tests=ARC_SIGNED=0.001,ARC_VALID=-0.1,BAYES_00=-1.9,DKIMWL_WL_HIGH=-1,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,DMARC_PASS=-0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,SPF_HELO_NONE=0.001,SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no |
Series |
media: videobuf2-core: attach once if multiple planes share the same dbuf
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Message
Yunke Cao
June 5, 2024, 7:40 a.m. UTC
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. 1/4, 2/4 and 3/4 refactors __prepare_dmabuf() 4/4 adds a flag to avoid duplicated attaching v3: - Add patch 1/4 to move clearing fields into __vb2_plane_dmabuf_put(). - Resolve review comments on v2. Detailed changelog in patch. v2: - 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 (4): media: videobuf2-core: clear memory related fields in __vb2_plane_dmabuf_put() 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 | 152 ++++++++++-------- include/media/videobuf2-core.h | 3 + 2 files changed, 91 insertions(+), 64 deletions(-)