lkml.org 
[lkml]   [2020]   [May]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[RFC][PATCH 0/4] Support non-default CMA regions to the dmabuf heaps interface
Date
This is a much belated second stab at allowing non-default CMA
regions to be exposed via the dmabuf heaps interface.

Previous attempt was here:
https://lore.kernel.org/lkml/20191025225009.50305-2-john.stultz@linaro.org/T/

This pass tried to take Rob's earlier suggestion to use a flag
property.

Feedback would be greatly welcome!

thanks
-john

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Sandeep Patil <sspatil@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-mm@kvack.org

John Stultz (4):
devicetree: bindings: Add linux,cma-heap tag for reserved memory
mm: cma: Add dma_heap flag to cma structure
dma-buf: cma_heap: Extend logic to export CMA regions tagged with
"linux,cma-heap"
example: dts: hi3660-hikey960: Add dts entries to test cma heap
binding

.../reserved-memory/reserved-memory.txt | 3 +++
.../boot/dts/hisilicon/hi3660-hikey960.dts | 7 +++++++
drivers/dma-buf/heaps/cma_heap.c | 18 +++++++++---------
include/linux/cma.h | 3 +++
kernel/dma/contiguous.c | 3 +++
mm/cma.c | 11 +++++++++++
mm/cma.h | 1 +
7 files changed, 37 insertions(+), 9 deletions(-)

--
2.17.1

\
 
 \ /
  Last update: 2020-05-01 09:40    [W:0.078 / U:0.404 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site