Dma-buf poll
Webdma_buf - shared buffer object. dbuf_mapped flag to show whether dbuf is mapped or not bytesused number of bytes occupied by data in the plane (payload). length size of this plane (NOT the payload) in bytes. The maximum valid size is MAX_UINT - … WebThis new IOCTL solves this problem by allowing us to get a snapshot of the implicit synchronization state of a given dma-buf in the form of a sync file. It's effectively the same as a poll() or I915_GEM_WAIT only, instead of CPU waiting directly, it encapsulates the wait operation, at the current moment in time, in a sync_file so we can check ...
Dma-buf poll
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WebJul 23, 2024 · Re: [PATCH] dma-buf/poll: Get a file reference for outstanding fence callbacks From: Michel Dänzer Date: Fri Jul 23 2024 - 04:19:55 EST Next message: Christian König: "Re: [Linaro-mm-sig] [PATCH] dma-buf/poll: Get a file reference for outstanding fence callbacks" Previous message: Suren Baghdasaryan: "Re: [PATCH v3 … Webstruct_dma_buf - shared buffer object. SYNOPSIS¶. struct dma_buf {size_t size;struct file * file;struct list_head attachments;const struct dma_buf_ops * ops;struct mutex …
WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [RFC v2 dma-buf 0/3] Improve the dma-buf tracking @ 2024-03-22 2:51 Chenbo Feng 2024-03-22 2:51 ` [RFC v2 1/3] dma-buf: give each buffer a full-fledged inode Chenbo Feng ` (3 more replies) 0 siblings, 4 replies; 11+ messages in thread From: Chenbo Feng @ 2024-03-22 2:51 UTC … WebAug 13, 2013 · This patch adds lock and poll callbacks to dma buf file operations, and these callbacks will be called by fcntl and select system calls. fcntl and select system …
WebDMA-BUF OVERVIEW. Dma-buf is a standard mechanism in Linux kernel for sharing buffers between different device drivers. 6 OpenFabrics Alliance Workshop 2024. user … Webdmabuf = dentry->d_fsdata; if (unlikely (!dmabuf)) return; BUG_ON (dmabuf->vmapping_counter); /* * If you hit this BUG () it could mean: * * There's a file reference imbalance in dma_buf_poll / dma_buf_poll_cb or somewhere else * * dmabuf->cb_in/out.active are non-0 despite no pending fence callback */
WebSo, we introduce the concept of direct memory access (DMA) to help pipe data from the ADC (or any other peripheral) to memory. We can also use the DMA controller the other way, too. We start by showing an example of reading a large buffer of test data out over UART via DMA.
WebPort of Entry Type Three Character Code Date of Confirmation Stamp Image; Alburgh, Vermont: Land: ABG: Sep 3, 2012: Alburgh Springs, Vermont: Land: ABS: May 30, 2016 recipe angel slayer l2WebThe Atlanta DMA is comprised of 55 counties. 2 in Alabama, 52 in Georgia, 1 in North Carolina. ATLANTA DMA is number 10 Designated Market Area in United States, as … recipe and meal plannerWebApr 11, 2024 · Campaign poll. The position of the flag indicates whether the organization is partisan. Organizations are considered partisan if they operate on behalf of a candidate, … recipe ambrosia salad cool whipWebJun 11, 2024 · The DMA-BUF heaps interface (along with ION that came before it) concedes that, in some cases, user space knows more about how a buffer will be used than the kernel does. Thus, it can be optimal to let user space choose the … unloading the m1 garandWebShare your thoughts today! recipe and inventory management softwareWebdmabuf->ops = ops; dmabuf->size = size; dmabuf->exp_name = exp_name; + init_waitqueue_head(&dmabuf->poll); + dmabuf->cb_excl.poll = dmabuf->cb_shared.poll = &dmabuf->poll; + dmabuf->cb_excl.active = dmabuf->cb_shared.active = 0; + if (!resv) { recipe and procedureWebAPI • dma_buf_export(): Used to announce the wish to export a buffer Connects the exporter's private metadata for the buffer, an implementation of buffer operations for this buffer, and flags for the associated file. Returns a handle to the dma_buf object with all the above associated information. • dma_buf_fd(): Returns a FD associated with the … recipe and grocery delivery