linux-toradex.git/Documentation/userspace-api/dma-buf-heaps.rst, branch v6.18-rc4 Linux kernel for Apalis and Colibri modules dma-buf: heaps: Give default CMA heap a fixed name 2025-07-09T10:21:40+00:00 Jared Kangas jkangas@redhat.com 2025-06-10T13:12:31+00:00 854acbe75ff406ea2c72ef3048578dfd99425ba9 The CMA heap's name in devtmpfs can vary depending on how the heap is defined. Its name defaults to "reserved", but if a CMA area is defined in the devicetree, the heap takes on the devicetree node's name, such as "default-pool" or "linux,cma". To simplify naming, unconditionally name it "default_cma_region", but keep a legacy node in place backed by the same underlying allocator for backwards compatibility. Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jared Kangas <jkangas@redhat.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://lore.kernel.org/r/20250610131231.1724627-4-jkangas@redhat.com 
The CMA heap's name in devtmpfs can vary depending on how the heap is
defined. Its name defaults to "reserved", but if a CMA area is defined
in the devicetree, the heap takes on the devicetree node's name, such as
"default-pool" or "linux,cma". To simplify naming, unconditionally name
it "default_cma_region", but keep a legacy node in place backed by the
same underlying allocator for backwards compatibility.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jared Kangas <jkangas@redhat.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://lore.kernel.org/r/20250610131231.1724627-4-jkangas@redhat.com
Documentation: dma-buf: heaps: Fix code markup 2025-07-09T10:21:39+00:00 Jared Kangas jkangas@redhat.com 2025-06-10T13:12:29+00:00 c2d636dc6359efc68fbb84b44485789edcbba9f9 Code snippets should be wrapped in double backticks to follow reStructuredText semantics; the use of single backticks uses the :title-reference: role by default, which isn't quite what we want. Add double backticks to code snippets to fix this. Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jared Kangas <jkangas@redhat.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://lore.kernel.org/r/20250610131231.1724627-2-jkangas@redhat.com 
Code snippets should be wrapped in double backticks to follow
reStructuredText semantics; the use of single backticks uses the
:title-reference: role by default, which isn't quite what we want.
Add double backticks to code snippets to fix this.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jared Kangas <jkangas@redhat.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://lore.kernel.org/r/20250610131231.1724627-2-jkangas@redhat.com
Documentation: dma-buf: heaps: Add heap name definitions 2025-03-12T22:49:02+00:00 Maxime Ripard mripard@kernel.org 2025-03-06T13:51:14+00:00 2d38f5fe1a208d544d3771d2c67087a251094ba0 Following a recent discussion at last Plumbers, John Stultz, Sumit Sewal, TJ Mercier and I came to an agreement that we should document what the dma-buf heaps names are expected to be, and what the buffers attributes you'll get should be documented. Let's create that doc to make sure those attributes and names are guaranteed going forward. Reviewed-by: T.J. Mercier <tjmercier@google.com> Signed-off-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250306135114.1943738-1-mripard@kernel.org 
Following a recent discussion at last Plumbers, John Stultz, Sumit
Sewal, TJ Mercier and I came to an agreement that we should document
what the dma-buf heaps names are expected to be, and what the buffers
attributes you'll get should be documented.

Let's create that doc to make sure those attributes and names are
guaranteed going forward.

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250306135114.1943738-1-mripard@kernel.org